publicationDate stringlengths 1 2.79k | title stringlengths 1 36.5k ⌀ | abstract stringlengths 1 37.3k ⌀ | id stringlengths 9 47 |
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2009-12-18 | A superconducting cavity bus for single Nitrogen Vacancy defect centres in diamond | Circuit-QED has demonstrated very strong coupling between individual
microwave photons trapped in a superconducting coplanar resonator and nearby
superconducting qubits. In this work we show how, by designing a novel
interconnect, one can strongly connect the superconducting resonator, via a
magnetic interaction, to a ... | 0912.3586v1 |
2009-12-30 | Pulsed Nuclear Pumping and Spin Diffusion in a Single Charged Quantum Dot | We report the observation of a feedback process between the nuclear spins in
a single charged quantum dot and its trion transition, driven by a periodic
sequence of optical pulses. The pulse sequence intersperses off-resonant
ultrafast pulses for coherent electron-spin rotation and resonant narrow-band
optical pumping.... | 0912.5401v1 |
2010-04-02 | Electron spin coherence and electron nuclear double resonance of Bi donors in natural Si | Donors in silicon hold considerable promise for emerging quantum
technologies, due to the their uniquely long electron spin coherence times. Bi
donors in silicon differ from P and other Group V donors in several significant
respects: they have the strongest binding energy (70.98 meV), a large nuclear
spin (I = 9/2) and... | 1004.0340v3 |
2010-07-13 | Asymmetric optical nuclear spin pumping in a single uncharged quantum dot | A highly asymmetric dynamic nuclear spin pumping is observed in a single self
assembled InGaAs quantum dot subject to resonant optical pumping of the neutral
exciton transition leading to a large maximum polarization of 54%. This dynamic
nuclear polarization is found to be much stronger following pumping of the
higher ... | 1007.2145v2 |
2010-09-01 | Observation of heavy-hole hyperfine interaction in quantum dots | We measure the strength and the sign of hyperfine interaction of a heavy-hole
with nuclear spins in single self-assembled quantum dots. Our experiments
utilize the locking of a quantum dot resonance to an incident laser frequency
to generate nuclear spin polarization. By monitoring the resulting Overhauser
shift of opt... | 1009.0181v1 |
2011-11-22 | Magnetic excitations in L-edge resonant inelastic x-ray scattering from one-dimensional cuprates | We study the magnetic excitation spectra of L-edge resonant inelastic x-ray
scattering (RIXS) from the spin singlet ground state in one-dimensional undoped
cuprates. Analyzing the transition amplitudes of the magnetic excitations in
the second-order dipole allowed process, we find that the magnetic excitations
are brou... | 1111.5078v1 |
2012-01-09 | Manipulating dipolar and spin-exchange interactions in spin-1 Bose-Einstein condensates | It remains a challenge to independently manipulate the magnetic dipolar and
the spin-exchange interactions, which are entangled in many spin systems,
particularly in spin-1 Bose-Einstein condensates. For this purpose, we put
forward a sequence of rf pulses and the periodic dynamical decoupling sequence
of optical Feshb... | 1201.1779v3 |
2012-07-24 | 'Kondo state' and Kondo resonance in a two-dimensional electron gas | The delicate balance of spin-screening and spin-aligning interactions
determines many of the peculiar properties of dilute magnetic systems. We study
a surface-supported all-organic multi-impurity Kondo spin system at the atomic
scale by low-temperature scanning tunnelling microscopy and -spectroscopy. The
model system... | 1207.5613v1 |
2013-05-23 | Quantum Phase Transition between Z2 spin liquid and columnar Valence Bond Crystals on a Triangular lattice | We study the quantum phase transition between the $Z_2$ spin liquid and
valence bond solid (VBS) orders on a triangular lattice. With a fully isotropic
triangular lattice, the transition from a columnar or resonating-plaquette VBS
order can be either first order or there could be two transitions with an
intermediate ph... | 1305.5553v3 |
2013-05-25 | Spin-current induced Kondo-resonance splitting of a single cobalt atom | We use a low-temperature scanning tunneling microscope to study the interplay
between the Kondo effect of a single-atom contact and a spin current. To this
end, a nickel tip is coated by a thick layer of copper and brought into contact
with a single Co atom adsorbed on a Cu(100) surface. We show that upon contact
the K... | 1305.5903v6 |
2013-06-15 | Circuit QED with Hole-Spin Qubits in Ge/Si Nanowire Quantum Dots | We propose a setup for universal and electrically controlled quantum
information processing with hole spins in Ge/Si core/shell nanowire quantum
dots (NW QDs). Single-qubit gates can be driven through electric-dipole-induced
spin resonance, with spin-flip times shorter than 100 ps. Long-distance
qubit-qubit coupling ca... | 1306.3596v2 |
2013-11-26 | Spin noise spectroscopy of a single-quantum-well microcavity | We report on the first experimental observation of spin noise in a single
semiconductor quantum well embedded into a microcavity. The great
cavity-enhanced sensitivity to fluctuations of optical anisotropy has allowed
us to measure the Kerr rotation and ellipticity noise spectra in the strong
coupling regime. The spin ... | 1311.6587v2 |
2014-01-23 | The suppression of electron correlations in the collapsed tetragonal phase of CaFe2As2 under ambient pressure demonstrated by 75As NMR-NQR measurements | The static and the dynamic spin correlations in the low temperature collapsed
tetragonal and the high temperature tetragonal phase in CaFe2As2 have been
investigated by 75As nuclear magnetic resonance (NMR) and nuclear quadrupole
resonance (NQR) measurements.
Through the temperature (T) dependence of the nuclear spin... | 1401.6191v1 |
2014-02-13 | Unusual spin fluctuations and magnetic frustration in olivine and non-olivine LiCoPO$_4$ detected by $^{31}$P and $^7$Li nuclear magnetic resonance | We report $^{31}$P and $^{7}$Li nuclear magnetic resonance (NMR) studies in
new non-olivine LiZnPO$_4$-type LiCoPO$_4^\text{tetra}$ microcrystals, where
the Co$^{2+}$ ions are tetrahedrally coordinated. Olivine LiCoPO$_4$, which was
directly transformed from LiCoPO$_4^\text{tetra}$ by an annealing process, was
also stu... | 1402.3082v2 |
2014-04-29 | Establishing the fundamental magnetic interactions in the chiral skyrmionic Mott insulator Cu2OSeO3 by terahertz electron spin resonance | The recent discovery of skyrmions in Cu$_2$OSeO$_3$ has established a new
platform to create and manipulate skyrmionic spin textures. We use high-field
electron spin resonance (ESR) spectroscopy combining a terahertz free electron
laser and pulsed magnetic fields up to 64 T to probe and quantify its
microscopic spin-sp... | 1404.7319v2 |
2014-10-14 | Magnetic resonance detection of individual proton spins using a quantum reporter network | We demonstrate a method of magnetic resonance imaging with single
nuclear-spin sensitivity under ambient conditions. It employs a network of
isolated electronic-spin quantum bits (qubits) that act as quantum reporters on
the surface of high purity diamond. The reporter spins are localized with
nanometer-scale uncertain... | 1410.3750v1 |
2015-03-06 | Electric-dipole-induced spin resonance in a lateral double quantum dot incorporating two single domain nanomagnets | On-chip magnets can be used to implement relatively large local magnetic
field gradients in na- noelectronic circuits. Such field gradients provide
possibilities for all-electrical control of electron spin-qubits where
important coupling constants depend crucially on the detailed field
distribution. We present a double... | 1503.01938v1 |
2015-06-15 | Detection of topological states in two-dimensional Dirac systems by the dynamic spin susceptibility | We discuss dynamic spin susceptibility (DSS) in two-dimensional (2D) Dirac
electrons with spin-orbit interactions to characterize topological insulators.
The imaginary part of the DSS appears as an absorption rate in response to a
transverse ac magnetic field, just as in an electron spin resonance experiment
for locali... | 1506.04691v2 |
2015-07-10 | The quantum mechanics correspondence principle for spin systems and its application for some magnetic resonance problems | Problems of interacting quantum magnetic moments become exponentially complex
with increasing number of particles. As a result, classical equations are often
used but the validity of reduction of a quantum problem to a classical problem
should be justified. In this paper we formulate the correspondence principle,
which... | 1507.03043v1 |
2015-10-09 | Electron Spin Resonance in a Two-Dimensional Fermi Liquid with Spin-Orbit Coupling | Electron spin resonance (ESR) is usually interpreted as a single-particle
phenomenon protected from the effect of many-body correlations. We show that
this is not the case in a two-dimensional Fermi liquid (FL) with spin-orbit
coupling (SOC). Depending on whether the magnetic field is below or above some
critical value... | 1510.02534v2 |
2016-01-06 | All-electrical detection of spin dynamics in magnetic antidot lattices by the inverse spin Hall effect | The understanding of spin dynamics in laterally confined structures on
sub-micron length scales has become a significant aspect of the development of
novel magnetic storage technologies. Numerous ferromagnetic resonance
measurements, optical characterization by Kerr microscopy and Brillouin light
scattering spectroscop... | 1601.01221v1 |
2016-02-14 | Ultra-sensitive nanoscale magnetic field sensors based on resonant spin filtering | Solid state magnetic field sensors based on magneto-resistance modulation
find direct applications in communication devices, specifically in proximity
detection, rotational reference detection and current sensing. In this work, we
propose sensor structures based on the magneto-resistance physics of resonant
spin-filter... | 1602.04438v1 |
2016-04-19 | Delayed entanglement echo for individual control of a large number of nuclear spins | Methods for achieving quantum control and detection of individual nuclear
spins by single electrons of solid-state defects play a central role for
quantum information processing and nano-scale nuclear magnetic resonance (NMR).
However, with standard techniques, no more than 8 nuclear spins have been
resolved. Here we d... | 1604.05731v1 |
2016-05-18 | Collective Strong Coupling with Homogeneous Rabi Frequencies using a 3D Lumped Element Microwave Resonator | We design and implement 3D lumped element microwave cavities for the coherent
and uniform coupling to electron spins hosted by nitrogen vacancy centers in
diamond. Our design spatially focuses the magnetic field to a small mode
volume. We achieve large homogeneous single spin coupling rates, with an
enhancement of the ... | 1605.05554v1 |
2016-07-05 | Characterizing Si:P quantum dot qubits with spin resonance techniques | Quantum dots patterned by atomically precise placement of phosphorus donors
in single crystal silicon have long spin lifetimes, advantages in
addressability, large exchange tunability, and are readily available
few-electron systems. To be utilized as quantum bits, it is important to
non-invasively characterise these do... | 1607.01086v1 |
2016-07-13 | Surface state dominated spin-charge current conversion in topological insulator/ferromagnetic insulator heterostructures | We report the observation of ferromagnetic resonance-driven spin pumping
signals at room temperature in three-dimensional topological insulator thin
films -- Bi2Se3 and (Bi,Sb)2Te3 -- deposited by molecular beam epitaxy on
yttrium iron garnet thin films. By systematically varying the Bi2Se3 film
thickness, we show that... | 1607.03872v1 |
2017-07-25 | Non-equilibrium nuclear spin distribution function in quantum dots subject to periodic pulses | Electron spin dephasing in a singly charged semiconductor quantum dot can
partially be suppressed by periodic laser pulsing. We propose a semi-classical
approach describing the decoherence of the electron spin polarization governed
by the hyperfine interaction with the nuclear spins as well as the
probabilistic nature ... | 1707.07841v1 |
2017-08-30 | Phase-Encoded Hyperpolarized Nanodiamond for Magnetic Resonance Imaging | Surface-functionalized nanomaterials can act as theranostic agents that
detect disease and track biological processes using hyperpolarized magnetic
resonance imaging (MRI). Candidate materials are sparse however, requiring
spinful nuclei with long spin-lattice relaxation (T1) and spin-dephasing times
(T2), together wit... | 1709.01851v1 |
2018-05-31 | Spin-orbit coupling and resonances in the conductance of quantum wires | We investigate a possibility of pair electron-electron e-e collisions in a
ballistic wire with spin-orbit coupling and only one populated mode. Unlike in
a spin-degenerate system, a combination of spin-splitting in momentum space
with a momentum-dependent spin-precession opens up a finite phase space for
pair e-e colli... | 1805.12385v2 |
2017-05-14 | Anomalous thermoelectric properties of a Floquet topological insulator with spin momentum non-orthogonality | The spin momentum non-orthogonality in 3D topological insulators leads to
modification of the spin texture and brings in an out-of-plane spin
polarization component. Apart from spin texture, the anomalous thermoelectric
properties of these materials are worth studying. In this paper, we have
pointed out that the off re... | 1705.04948v3 |
2018-10-13 | Spin-torque resonance due to diffusive dynamics at a surface of topological insulator | We investigate spin-orbit torques on magnetization in an insulating
ferromagnetic (FM) layer that is brought into a close proximity to a
topological insulator (TI). In addition to the well-known field-like spin-orbit
torque, we identify an anisotropic anti-damping-like spin-orbit torque that
originates in a diffusive m... | 1810.05828v3 |
2018-12-10 | Interactions between non-resonant rf fields and atoms with strong spin-exchange collisions | We study the interactions between oscillating non-resonant rf fields and
atoms with strong spin-exchange collisions in the presence of a weak dc
magnetic field. We find that the atomic Larmor precession frequency shows a new
functional form to the rf field parameters when the spin-exchange collision
rate is tuned. In t... | 1812.03772v2 |
2020-04-29 | Dynamics of Colombo's Top: Generating Exoplanet Obliquities from Planet-Disk Interactions | Large planetary spin-orbit misalignments (obliquities) may strongly influence
atmospheric circulation and tidal heating in the planet. A promising avenue to
generate obliquities is via spin-orbit resonances, where the spin and orbital
precession frequencies of the planet cross each other as the system evolves in
time. ... | 2004.14380v3 |
2016-03-25 | Large spin pumping effect in antisymmetric precession of Ni$_{79}$Fe$_{21}$/Ru/Ni$_{79}$Fe$_{21}$ | In magnetic trilayer structures, a contribution to the Gilbert damping of
ferromagnetic resonance arises from spin currents pumped from one layer to
another. This contribution has been demonstrated for layers with weakly
coupled, separated resonances, where magnetization dynamics are excited
predominantly in one layer ... | 1603.07977v1 |
2017-02-14 | A Method for Measurement of Spin-Spin Couplings with sub-mHz Precision Using Zero- to Ultralow-Field Nuclear Magnetic Resonance | We present a method which allows for the extraction of physical quantities
directly from zero- to ultralow-field nuclear magnetic resonance (ZULF NMR)
data. A numerical density matrix evolution is used to simulate ZULF NMR spectra
of several molecules in order to fit experimental data. The method is utilized
to determi... | 1702.04297v2 |
2017-06-04 | Field- and temperature-modulated spin-diode effect in a GMR nanowire with dipolar coupling | An analytical model of the spin-diode effect induced by resonant
spin-transfer torque in a ferromagnetic bilayer with strong dipolar coupling
provides the resonance frequencies and the lineshapes of the magnetic field
spectra obtained under field or laser-light modulation. The effect of laser
irradiation is accounted f... | 1706.01036v1 |
2019-03-14 | Site-selective quantum control in an isotopically enriched 28Si/SiGe quadruple quantum dot | Silicon spin qubits are a promising quantum computing platform offering long
coherence times, small device sizes, and compatibility with industry-backed
device fabrication techniques. In recent years, high fidelity single-qubit and
two-qubit operations have been demonstrated in Si. Here, we demonstrate
coherent spin co... | 1903.05952v1 |
2021-02-16 | Spin-pumping in superconductor-antiferromagnetic insulator bilayers | We study theoretically spin pumping in bilayers consisting of superconductors
and antiferromagnetic insulators. We consider both compensated and
uncompensated interfaces and include both the regular scattering channel and
the Umklapp scattering channel. We find that at temperatures close to the
critical temperatures an... | 2102.08400v2 |
2021-08-25 | High energy spin excitations in the quantum spin liquid candidate Zn-barlowite probed by resonant inelastic x-ray scattering | A quantum spin liquid is a novel ground state that can support long-range
entanglement between magnetic moments, resulting in exotic spin excitations
involving fractionalized $S=\frac{1}{2}$ spinons. Here, we measure the
excitations in single crystals of the spin liquid candidate Zn-barlowite using
resonant inelastic X... | 2108.11506v1 |
2019-07-18 | Understanding the Linewidth of the ESR Spectrum Detected by a Single NV Center in Diamond | Spectral analysis of electron spin resonance (ESR) is a powerful technique
for various investigations including characterization of spin systems,
measurements of spin concentration, and probing spin dynamics. The
nitrogen-vacancy (NV) center in diamond is a promising magnetic sensor enabling
improvement of ESR sensitiv... | 1907.08156v1 |
2019-12-09 | Strong Spin Squeezing Induced by Weak Squeezing of Light inside a Cavity | We propose a simple method for generating spin squeezing of atomic ensembles
in a Floquet cavity subject to a weak, detuned two-photon driving. We
demonstrate that {\it the weak squeezing of light inside the cavity can,
counterintuitively, induce strong spin squeezing}. This is achieved by
exploiting the anti-Stokes sc... | 1912.04039v3 |
2020-02-26 | Demonstration of NV-detected ESR spectroscopy at 115 GHz and 4.2 Tesla | High frequency electron spin resonance (ESR) spectroscopy is an invaluable
tool for identification and characterization of spin systems. Nanoscale ESR
using the nitrogen-vacancy (NV) center has been demonstrated down to the level
of a single spin. However, NV-detected ESR has exclusively been studied at low
magnetic fi... | 2002.11845v2 |
2020-06-07 | Sublattice symmetry breaking and ultra low energy excitations in Graphene-on-hBN Heterostructures | The low-lying states of graphene contain exciting topological properties that
depend on the interplay of different symmetry breaking terms. The corresponding
energy gaps remained unexplored until recently, owing to the low energy scale
of the terms involved (few tens of ueV). These low energy terms include
sublattice s... | 2006.04190v1 |
2021-03-15 | Controlled coherent dynamics of [VO(TPP)], a prototype molecular nuclear qudit with an electronic ancilla | We show that [VO(TPP)] (vanadyl tetraphenylporphyrinate) is a promising
system suitable to implement quantum computation algorithms based on encoding
information in multi-level (qudit) units. Indeed, it embeds an electronic spin
1/2 coupled through hyperfine interaction to a nuclear spin 7/2, both
characterized by rema... | 2103.08730v1 |
2021-09-15 | Complexes formed in collisions between ultracold alkali-metal diatomic molecules and atoms | We explore the properties of 3-atom complexes of alkali-metal diatomic
molecules with alkali-metal atoms, which may be formed in ultracold collisions.
We estimate the densities of vibrational states at the energy of atom-diatom
collisions, and find values ranging from 2.2 to 350~K$^{-1}$. However, this
density does not... | 2109.07435v2 |
2021-12-28 | Spin-orbit coupling for close-in planets | We study the spin evolution of close-in planets in multi-body systems and
present a very general formulation of the spin-orbit problem. This includes a
simple way to probe the spin dynamics from the orbital perturbations, a new
method for computing forced librations and tidal deformation, and general
expressions for th... | 2112.14335v1 |
2022-01-26 | Instability of the ferromagnetic quantum critical point in strongly interacting 2D and 3D electron gases with arbitrary spin-orbit splitting | In this work we revisit itinerant ferromagnetism in 2D and 3D electron gases
with arbitrary spin-orbit splitting and strong electron-electron interaction.
We identify the resonant scattering processes close to the Fermi surface that
are responsible for the instability of the ferromagnetic quantum critical point
at low ... | 2201.10995v1 |
2022-02-19 | Entangled, Spin-polarized Excitons from Singlet Fission in a Rigid Dimer | Singlet fission, a process that splits a singlet exciton into a biexciton,
has promise in quantum information. We report time-resolved electron
paramagnetic resonance measurements on a molecule, TIPS-BP1$'$, designed to
exhibit strongly state-selective relaxation to specific magnetic spin
sublevels. The resulting optic... | 2202.09678v1 |
2022-02-24 | Phonon thermal Hall effect in a metallic spin ice | It has become common knowledge that phonons can generate thermal Hall effect
in a wide variety of materials, although the underlying mechanism is still
controversial. We study longitudinal $\kappa_{xx}$ and transverse $\kappa_{xy}$
thermal conductivity in Pr$_2$Ir$_2$O$_7$, which is a metallic analogue of spin
ice. Des... | 2202.12149v1 |
2022-03-28 | Electron-spin spectral diffusion in an erbium doped crystal at millikelvin temperatures | Erbium-doped crystals offer a versatile platform for hybrid quantum devices
because they combine magnetically-sensitive electron-spin transitions with
telecom-wavelength optical transitions. At the high doping concentrations
necessary for many quantum applications, however, strong magnetic interactions
of the electron-... | 2203.15012v1 |
2022-06-19 | Studying triangle singularity through spin observables | In this work, we study the spin density matrix element $\rho_{00}$ of the
$\phi$ in the decay $J/\psi \rightarrow \eta \pi \phi$. In previous studies, a
band around 1.4 GeV on the $\pi^0\phi$ distribution in Dalitz plot was reported
by the BESIII Collaboration. This structure may be caused by the production of
a resona... | 2206.09308v2 |
2022-07-27 | Resonant single-shot CNOT in remote double quantum dot spin qubits | A critical element towards the realization of scalable quantum processors is
non-local coupling between nodes. Scaling connectivity beyond nearest-neighbor
interactions requires the implementation of a mediating interaction often
termed a 'quantum bus'. Cavity photons have long been used as a bus by the
superconducting... | 2207.13588v1 |
2023-01-18 | Coupling spin defects in hexagonal boron nitride to a microwave cavity | Optically addressable spin defects in hexagonal boron nitride (hBN) have
become a promising platform for quantum sensing. While sensitivity of these
defects are limited by their interactions with the spin environment in hBN,
inefficient microwave delivery can further reduce their sensitivity. Hare, we
design and fabric... | 2301.07304v1 |
2023-04-11 | Anomalous spin textures in a 2D topological superconductor induced by point impurities | Topological superconductors are foreseen as good candidates for the search of
Majorana zero modes, where they appear as edge states and can be used for
quantum computation. In this context, it becomes necessary to study the
robustness and behavior of electron states in topological superconductors when
a magnetic or non... | 2304.05256v1 |
2023-05-05 | Optically driven spin precession in polariton condensates | External driving of spinor degrees of freedom by magnetic or optical fields
in quantum systems underpin many applications ranging from nuclear magnetic
resonance to coherent state control in quantum computing. Although spinor
polariton condensates are offering a flexible platform for spinoptronic
applications, strong i... | 2305.03782v1 |
2023-11-20 | Bulk photovoltaic effect in antiferromagnet: Role of collective spin dynamics | Inspired by recent advancements in the bulk photovoltaic effect which can
extend beyond the independent particle approximation (IPA), this study delves
into the influence of collective spin dynamics in an antiferromagnetic on
photocurrent generation using a time domain calculation. In the linear and
photocurrent conduc... | 2311.12212v2 |
2023-12-15 | Axion-like Particle Detection in Alkali-Noble-Gas Haloscopes | Revealing the essence of dark matter (DM) and dark energy is essential for
understanding our universe. Ultralight (rest energy $<$10 eV) bosonic
particles, including pseudoscalar axions and axion-like particles (ALPs) have
emerged among leading candidates to explain the composition of DM and searching
for them has beco... | 2312.09491v2 |
1995-12-05 | Phase Diagram for Charge Density Waves in a Magnetic Field | The influence of an external magnetic field on a quasi one-dimensional system
with a charge density wave (CDW) instability is treated within the random phase
approximation which includes both CDW and spin density wave correlations. We
show that the CDW is sensitive to both orbital and Pauli effects of the field.
In the... | 9512033v1 |
2019-03-22 | Unidirectional Maxwellian Spin Waves | We develop a unified perspective of unidirectional topological edge waves in
non-reciprocal media. We focus on the inherent role of photonic spin in
non-reciprocal gyroelectric media, ie. magnetized metals or magnetized
insulators. We first review the concept of a Maxwell Hamiltonian in
non-reciprocal media, which imme... | 1903.09278v1 |
1993-02-12 | Possible Realization of Odd Frequency Pairing in Heavy Fermion Compounds | Using Majorana Fermions to represent spins we re-examine the Kondo Lattice
model for heavy fermions. The simplest decoupling procedure provides a
realization of odd frequency superconductivity, with resonant pairing and
surfaces of gap zeros. Spin and charge coherence factors vanish linearly with
the energy on the Ferm... | 9302018v1 |
2001-04-24 | Raman cross section of spin ladders | We demonstrate that a two-triplet resonance strongly renormalizes the Raman
spectrum of two-leg spin ladders and moreover suggest this to be the origin of
the asymmetry of the magnetic Raman continuum observed in CaV2O5. | 0104465v1 |
2002-12-06 | Nuclear Spin Superradiance | The review of experimental and main theoretical works on the phenomenon of
nuclear spin superradiance is given. The content includes: 1. Introduction, 2.
Experimental Observation, 3. Basic Model, 4. Evolution Equations, 5. Nyquist
Noise, 6. Incoherent Stage, 7. Transient Superradiance, 8. Pulsing
Superradiance, 9. Hype... | 0212139v1 |
2005-01-06 | Spin dependent transport in organic light-emitting diodes | Electrically Detected Magnetic Resonance (EDMR) was used to study a series of
multilayer organic devices based on aluminum (III) 8-hydroxyquinoline. These
devices were designed to identify the micoscopic origin of different spin
dependent process, i.e. hopping and exciton formation. EDMR is demonstrated to
probe molecu... | 0501122v1 |
2005-03-01 | Low Dimensional Lattice Diffusion in Solids Investigated by Nuclear Spin Echo Measurements | Lattice diffusion and internal local magnetic field gradients in solids are
investigated by numerical simulation of nuclear mangetic resonance(NMR) spin
echo experiments. The Fourier-spectrum method is employed in order to solve the
Bloch-Torrey equation with arbitrary magnetic field gradients in one- and
two-dimension... | 0503003v1 |
1995-11-11 | Multipole analysis of spin observables in vector meson photoproduction | A multipole analysis of vector meson photoproduction is formulated as a
generalization of the pseudoscalar meson case. Expansion of spin observables in
the multipole basis and behavior of these observables near threshold and
resonances are examined. | 9511013v1 |
2001-05-22 | Spin structure of the Delta(1232) and inelastic Compton scattering | Radiative transitions gamma + Delta(1232) -> N^* are discussed in the
nonrelativistic quark model with spin-orbit corrections for the 70-plet L^P=1^-
nucleon resonances N^*. The reaction gamma + N -> gamma + Delta is considered
as a tool to measure some of these transitions. A particular sensitivity to
photoexcitations... | 0105056v1 |
1999-09-29 | Light-induced conversion of nuclear spin isomers of molecules | We report on a new phenomenon of molecular nuclear spin isomers conversion in
the field of resonant laser radiation. It is based on the isomer-selective
optical excitation and the difference of conversion rates for excited and
unexcited molecules. We expect the considerable magnitude of the effect for all
molecules whi... | 9909056v1 |
2000-11-18 | New access to very weak interactions in molecules | It is predicted that nuclear spin conversion in molecules can be efficiently
controlled by strong laser radiation resonant to rovibrational molecular
transition. The phenomenon can be used for substantial enrichment of spin
isomers, or for detection of very weak (10-100 Hz) interactions in molecules. | 0011043v1 |
1998-02-03 | Generalized Quantum Control-Not Gate in Two-Spin Ising System | The physical implementation of the quantum Control-Not gate for a two-spin
system is investigated numerically. The concept of a generalized quantum
Control-Not gate, with arbitrary phase shift, is introduced. It is shown that a
resonant $\pi$-pulse provides a simple example of a generalized quantum
Control-Not gate. | 9802013v1 |
2008-09-12 | Quantum spin liquids | These notes are an introduction to a few selected theoretical ideas in the
field of quantum spin liquids: classical zero modes and breakdown of the 1/S
expansion, the Lieb-Schultz-Mattis-Hastings theorem and Oshikawa's argument,
the short-ranged resonating valence-bond picture, large-N limit (Schwinger
bosons) and Z_2 ... | 0809.2257v1 |
2008-09-26 | Laser Induced Selective Alignment of Water Spin Isomers | We consider laser alignment of ortho and para spin isomers of water molecules
by using strong and short off-resonance laser pulses. A single pulse is found
to create a distinct transient alignment and antialignment of the isomeric
species. We suggest selective alignment of one isomeric species (leaving the
other specie... | 0809.4626v1 |
2019-03-21 | Spin relaxation in fluorinated single and bilayer graphene | We present a joint experiment-theory study on the role of fluorine adatoms in
spin and momentum scattering of charge carriers in dilute fluorinated graphene
and bilayer graphene. The experimental spin-flip and momentum scattering rates
and their dependence on the density of fluorine and carrier doping are obtained
thro... | 1903.08973v1 |
2007-03-29 | Nucleon resonances in πN scattering up to energies \sqrt(s) < 2.0 GeV | A meson-exchange model for pion-nucleon scattering was previously constructed
using a three-dimensional reduction scheme of the Bethe-Salpeter equation for a
model Lagrangian involving \pi, \eta, N, \Delta, \rho, and \sigma fields. We
thereby extend our previous work by including the \eta N channel and all the
\pi N re... | 0703096v2 |
2016-08-31 | Importance of transient resonances in extreme-mass-ratio inspirals | The inspiral of stellar-mass compact objects, like neutron stars or
stellar-mass black holes, into supermassive black holes provides a wealth of
information about the strong gravitational-field regime via the emission of
gravitational waves. In order to detect and analyse these signals, accurate
waveform templates whic... | 1608.08951v2 |
2018-07-15 | Effects of Distributed Roughness on Crossflow Instability through Generalized Resonance Mechanisms | Experiments have shown that micron-sized distributed surface roughness can
significantly promote transition in a three-dimensional boundary layer
dominated by crossflow insta- bility. This sensitive effect has not yet been
fully explained physically and mathematically. Unlike past researches focusing
on the receptivity... | 1807.05468v1 |
2017-09-22 | Optical Wireless Information Transfer with Nonlinear Micromechanical Resonators | Wireless transfer of information is the basis of modern communication. It
includes cellular, WiFi, Bluetooth and GPS systems, all of which use
electromagnetic radio waves with frequencies ranging from typically 100 MHz to
a few GHz. However, several long-standing challenges with standard radio-wave
wireless transmissio... | 1710.00664v1 |
2019-01-25 | Phononic band structure engineering for high-Q gigahertz surface acoustic wave resonators on lithium niobate | Phonons at gigahertz frequencies interact with electrons, photons, and atomic
systems in solids, and therefore have extensive applications in signal
processing, sensing, and quantum technologies. Surface acoustic wave (SAW)
resonators that confine surface phonons can play a crucial role in such
integrated phononic syst... | 1901.09080v2 |
2019-07-23 | Hybrid Integrated Photonics Using Bulk Acoustic Resonators | Microwave frequency acousto-optic modulation is realized by exciting high
overtone bulk acoustic wave resonances (HBAR resonances) in the photonic stack.
These confined mechanical stress waves transmit exhibit vertically
transmitting, high quality factor (Q) acoustic Fabry Perot resonances that
extend into the Gigahert... | 1907.10177v1 |
2021-12-20 | A place for two-dimensional plasmonics in electromagnetic wave detection | Plasmons in two-dimensional electron systems (2DES) feature ultra-strong
confinement and are expected to efficiently mediate the interactions between
light and charge carriers. Despite these expectations, the electromagnetic
detectors exploiting 2d plasmon resonance have been so far inferior to their
non-resonant count... | 2112.10475v1 |
2022-01-17 | Phase-resolved visualization of radio-frequency standing waves in superconducting spiral resonator for metamaterial applications | Superconducting microcircuits and metamaterials are promising candidates for
use in new generation cryogenic electronics. Their functionality is largely
justified by the macroscopic distribution of electromagnetic fields in arranged
unit cells, rather than by the microscopic properties of composite materials.
We presen... | 2201.06660v1 |
2024-02-22 | Combinatorial split-ring and spiral meta-resonator for efficient magnon-photon coupling | Developing hybrid materials and structures for electromagnetic wave
engineering has been a promising route towards novel functionalities and
tunabilities in many modern applications and perspectives in new quantum
technologies. Despite its established success in engineering optical light and
terahertz waves, the implem... | 2402.15535v2 |
2021-01-12 | The complex interplay between tidal inertial waves and zonal flows in differentially rotating stellar and planetary convective regions I. Free waves | Quantifying tidal interactions in close-in two-body systems is of prime
interest since they have a crucial impact on the architecture and on the
rotational history of the bodies. Various studies have shown that the
dissipation of tides in either body is very sensitive to its structure and to
its dynamics, like differen... | 2101.04656v1 |
1994-11-01 | Cyclotron resonance lineshape in a Wigner crystal | The cyclotron resonance absorption spectrum in a Wigner crystal is
calculated. Effects of spin-splitting are modelled by substitutional disorder,
and calculated in the coherent potential approximation. Due to the increasing
strength of the dipole-dipole interaction, the results show a crossover from a
double-peak spect... | 9411003v2 |
1999-11-09 | Cooper Pairing in Ultracold K-40 Using Feshbach Resonances | We point out that the fermionic isotope K-40 is a likely candidate for the
formation of Cooper pairs in an ultracold atomic gas. Specifically, in an
optical trap that simultaneously traps the spin states |9/2,-9/2> and
|9/2,-7/2>, there exists a broad magnetic field Feshbach resonance at B = 196
gauss that can provide ... | 9911132v1 |
2000-09-22 | Resonant tunneling through zero-dimensional impurity states: Effects of a finite temperature | We have performed temperature dependent tunneling experiments through a
single impurity in an asymmetric vertical double barrier tunneling structure.
In particular in the charging direction we observe at zero magnetic field a
clear shift in the onset voltage of the resonant tunneling current through the
impurity. With ... | 0009349v1 |
2001-10-22 | What the resonance peak cannot do | In certain cuprates, a spin 1 resonance mode is prominent in the magnetic
structure measured by neutron scattering. It has been proposed that this mode
is responsible for significant features seen in other spectroscopies, such as
photoemission and optical absorption, which are sensitive to the charge
dynamics, and even... | 0110478v1 |
2002-09-04 | Tuning p-wave interactions in an ultracold Fermi gas of atoms | We have measured a p-wave Feshbach resonance in a single-component, ultracold
Fermi gas of potassium atoms. We have used this resonance to enhance the
normally suppressed p-wave collision cross-section to values larger than the
background s-wave cross-section between potassium atoms in different
spin-states. In additio... | 0209071v1 |
2003-04-08 | Exploiting environmental resonances to enhance qubit quality factors | We discuss dephasing times for a two-level system (including bias) coupled to
a damped harmonic oscillator. This system is realized in measurements on
solid-state Josephson qubits. It can be mapped to a spin-boson model with a
spectral function with an approximately Lorentzian resonance. We diagonalize
the model by mea... | 0304177v1 |
2004-08-24 | Inelastic light scattering and the off-resonance approximation | Inelastic (Raman) light scattering intensities for a 42-electron quantum dot
under off-resonance conditions and in different spin and angular momentum
channels are computed in order to test whether final collective states become
the dominant peaks in the process. The results of the calculations set a limit
to the sprea... | 0408510v1 |
2004-09-04 | Pure nuclear quadrupole resonance determination of the electric field gradient asymmetry for broad lines (and application to YBa2Cu3O7) | We present an angle dependent nuclear quadrupole resonance (ADNQR) method to
determine the electric field gradient asymmetry parameter eta in systems where
the resonance line is so broad that the radio frequency field can excite only a
portion of the nuclear spins. In this situation the recently developed
spectroscopic... | 0409101v1 |
2005-05-18 | Resonant tunneling magnetoresistance in epitaxial metal-semiconductor heterostructures | We report on resonant tunneling magnetoresistance via localized states
through a ZnSe semiconducting barrier which can reverse the sign of the
effective spin polarization of tunneling electrons. Experiments performed on
Fe/ZnSe/Fe planar junctions have shown that positive, negative or even its
sign-reversible magnetore... | 0505432v1 |
2005-12-31 | Trapped Fermions across a Feshbach resonance with population imbalance | We investigate the phase separation of resonantly interacting fermions in a
trap with imbalanced spin populations, both at zero and at finite temperatures.
We directly minimize the thermodynamical potential under the local density
approximation instead of using the gap equation, as the latter may give
unstable solution... | 0601006v2 |
2006-06-20 | Resonant Tunneling Magneto Resistance in Coupled Quantum Wells | A three barrier resonant tunneling structure in which the two quantum wells
are formed by a dilute magnetic semiconductor material (ZnMnSe) with a giant
Zeeman splitting of the conduction band is theoretically investigated.
Self-consistent numerical simulations of the structure predict giant
magnetocurrent in the reson... | 0606531v2 |
1999-09-28 | Resonances and higher twist in polarized lepton-nucleon scattering | We present a detailed analysis of resonance contributions in the context of
higher twist effects in the moments of the proton spin structure function g_1.
For each of these moments, it is found that there exists a characteristic Q^2
region in which (perturbative) higher twist corrections coexist with
(non-perturbative)... | 9909524v1 |
1999-10-18 | Chiral Symmetry Realization for Even- and Odd-parity Baryon Resonances | Baryon resonances with even and odd parity are collectively investigated from
the viewpoint of chiral symmetry(ChS). We propose a quartet scheme where
Delta's and N^*'s with even and odd parity form a chiral multiplet. This scheme
gives parameter-free constraints on the baryon masses in the quartet, which are
consisten... | 9910375v1 |
2001-09-07 | The Nucleon Structure in the Resonance Region | Recent results on inclusive and exclusive electroproduction experiments at
Jefferson Lab are discussed. They include measurements of the spin responses
for protons and neutrons in and above the resonance region, exclusive single
and double pion production to measure resonance transition multipoles, and
searches for pre... | 0109004v2 |
1996-06-20 | Pseudoscalar meson photoproduction: from known to undiscovered resonances | The role of dynamics in spin observables for pseudoscalar meson
photoproduction is investigated using a density matrix approach in a multipole
truncated framework. Extraction of novel rules for $\gamma p \rightarrow \pi^+
n,~ K^+ \Lambda$ and $\eta p$ reactions based on resonance dominance, and on
other broad and reaso... | 9606042v1 |
2000-10-18 | The GDH sum rule for the Delta isobar: A possible anomaly? | The GDH sum rule is discussed for the Delta(1232) resonance. It is shown that
apart from ordinary excitations to higher-energy states, the sum rule contains
a large negative contribution due to de-excitation into the nucleon state.
Therefore, a fulfillment of the sum rule assumes a strong coupling of Delta^+
and Delta^... | 0010060v1 |
2002-05-19 | Effective Lagrangian approach to the omega meson photoproduction near threshold | We apply the effective Lagrangian approach to investigate the role of the
nucleon resonances in $\omega$ meson photoproduction at energies near the
threshold. The resonant amplitudes are calculated from effective Lagrangians
with the gamma NN* and omega NN* coupling constants fixed by the empirical
helicity amplitudes ... | 0205052v1 |
2007-03-14 | Nuclear Giant Resonances and Linear Response | We search for nonlinear effects in nuclear giant resonances (GRs), in
particular the isovector dipole and the isoscalar quadrupole modes. To that
end, we employ a spectral analysis of time-dependent Hartree-Fock (TDHF)
dynamics using Skyrme forces. Based on TDHF calculations over a wide range of
excitation amplitudes, ... | 0703044v1 |
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