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Introduction to topological quantum computation with non-Abelian anyons |
Bernard Field and Tapio Simula |
School of Physics and Astronomy, |
Monash University, Victoria 3800, |
Australia |
(Dated: April 23, 2018) |
Topological quantum computers promise a fault tolerant means to perform quantum |
computation. Topologicalquantumcomputersuseparticleswithexoticexchangestatis- |
ticscallednon-Abeliananyons,andthesimplestanyonmodelwhichallowsforuniversal |
quantum computation by particle exchange or braiding alone is the Fibonacci anyon |
model. Oneclassicallyhardproblemthatcanbesolvedefficientlyusingquantumcom- |
8102 putationisfindingthevalueoftheJonespolynomialofknotsatrootsofunity. Weaim |
to provide a pedagogical, self-contained, review of topological quantum computation |
with Fibonacci anyons, from the braiding statistics and matrices to the layout of such |
a computer and the compiling of braids to perform specific operations. Then we use |
a simulation of a topological quantum computer to explicitly demonstrate a quantum |
rpA computationusingFibonaccianyons, evaluatingtheJonespolynomialofaselectionof |
simpleknots. Inadditiontosimulatingamodularcircuit-stylequantumalgorithm,we |
also show how the magnitude of the Jones polynomial at specific points could be ob- |
tained exactly using Fibonacci or Ising anyons. Such an exact algorithm seems ideally |
02 |
suitedforaproofofconceptdemonstrationofatopologicalquantumcomputer. |
]hp-tnauq[ |
Keywords: Aharonov-Jones-Landaualgorithm;Kauffmanbracketpolynomial;braid;Fibonaccianyons;fusion; |
Hadamardtest;Isinganyons;Jonespolynomial;knot;link;Majoranazeromode;non-Abelianvortex;quantum |
circuit;quantumcomputer;quantumdimension;superfluid;topologicalquantumcomputing;topologicalqubit |
CONTENTS 2. CompilingSingleQubitBraids 23 |
3. ConvergenceofSingleQubitBraids 23 |
I. Introduction 2 4. AlternativestoExhaustiveSearch 25 |
5. CompilingTwoQubitBraids 25 |
2v67160.2081:viXra II. Overview 3 E. SimulatingGenericQuantumAlgorithms 26 |
A. PrinciplesofTopologicalQuantumComputation 3 |
1. Non-AbelianAnyonsandQubits 3 VI. TopologicalQuantumAlgorithm 28 |
2. BraidingAnyons 4 A. TheAJLAlgorithm 28 |
3. MeasuringAnyons 4 1. UnitaryRepresentationoftheBraidGroup 30 |
4. PhysicalRealization 4 2. TheMarkovTrace 30 |
B. SimulationofaTopologicalQuantumComputer 5 3. PlatClosures 31 |
4. AnExample 31 |
III. TopologyandKnotTheory 6 5. AJLMatrices 33 |
A. Knots 6 B. HadamardTest 33 |
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