India's quantum computer

India's quantum computer is the proposed and planned quantum computer to be developed in India by 2026. A quantum computer is a computer based on quantum phenomena and governed by the principles of quantum mechanics in physics.  The development in the field of quantum computing in the world is also intricately linked to India. The legacy of quantum computing in India can be traced back from the period of Indian theoretical physicist Satyendra Nath Bose. His last four publication on quantum statistics and condensed matter physics led to the foundation of quantum mechanics. It was published in the year 1924.

The first quantum computer India launch was of 7 qubits developed at Tata Institute of Fundamental Research, Mumbai. In April 2025, An Indian startup named QpiAi unveiled a 25 qubit Quantum Computer named Indus, this quantum computer launched, is the first full-stack quantum computing system in the country selected under National Quantum Mission India (NQM), Government of India scheme. In the next five years, it is expected that India will invest around one billion dollars in the programs related to the development of the quantum computer.  The Government of India has launched an initiative called as National Quantum Mission to achieve the goal of the development of the India's quantum computer. India is one of the seven countries having dedicated National Quantum Mission to the development of quantum technologies in the country. The union defence minister Rajnath Singh emphasized on the development of quantum computing during the ceremony of 16th foundation day of Indian Institute Technology, Mandi.

"The time to come is of quantum computing."The Indian startup company QpiAI launched a 25 qubits quantum computer known as QpiAI-Indus on 14 April 2025. The QpiAI-Indus quantum computer is an India's one of the most powerful quantum computer. It is a superconducting quantum computer. The launch of the QpiAI-Indus quantum computer was announced on the occasion of the World Quantum Day. The QpiAI-Indus quantum computer is India's first full-stack quantum computing system that combines advanced quantum hardware, scalable control, and optimized software for transformative hybrid computing. In this quantum computer, advanced quantum processors, next-generation Quantum-HPC software platforms, and AI-enhanced quantum solutions have been integrated.


Institute for Quantum Computing

The Institute for Quantum Computing (IQC) is an affiliate scientific research institute of the University of Waterloo located in Waterloo, Ontario with a multidisciplinary approach to the field of quantum information processing. IQC was founded in 2002 primarily through a donation made by Mike Lazaridis and his wife Ophelia whose substantial donations have continued over the years.  The institute is now located in the Mike & Ophelia Lazaridis Quantum-Nano Centre and the Research Advancement Centre at the University of Waterloo.
Its executive director is physics professor Norbert Lütkenhaus and hosts researchers based in 7 departments across 3 faculties at the University of Waterloo. In addition to theoretical and experimental research on quantum computing, IQC also hosts academic conferences and workshops, short courses for undergraduate and high school students, and scientific outreach events including open houses and tours for the public.


IonQ

IonQ, Inc. is an American quantum computing hardware and software company headquartered in College Park, Maryland. The company develops general-purpose trapped ion quantum computers and accompanying software to generate, optimize, and execute quantum circuits.


Jay Gambetta

Jay Michael Gambetta is a scientist and Director of Research at IBM Thomas J Watson Research Center working to build a quantum computer.


Linear optical quantum computing

Linear optical quantum computing or linear optics quantum computation (LOQC), also photonic quantum computing (PQC), is a paradigm of quantum computation, allowing (under certain conditions, described below) universal quantum computation. LOQC uses photons as information carriers, mainly uses linear optical elements, or optical instruments (including reciprocal mirrors and waveplates) to process quantum information, and uses photon detectors and quantum memories to detect and store quantum information.


List of companies involved in quantum computing, communication or sensing

This article lists the companies worldwide engaged in the development of quantum computing, quantum communication and quantum sensing. Quantum computing and communication are two sub-fields of quantum information science, which describes and theorizes information science in terms of quantum physics. While the fundamental unit of classical information is the bit, the basic unit of quantum information is the qubit. Quantum sensing is the third main sub-field of quantum technologies and it focus consists in taking advantage of the quantum states sensitivity to the surrounding environment to perform atomic scale measurements.


List of quantum computing journals

This is a list of quantum computing journals which is a collection of peer-reviewed scientific journals that publish research in the field of quantum computing, including topics such as quantum algorithms, quantum information theory, quantum cryptography, and quantum hardware.


List of quantum processors

This list contains quantum processors, also known as quantum processing units (QPUs). Some devices listed below have only been announced at press conferences so far, with no actual demonstrations or scientific publications characterizing the performance.
Quantum processors are difficult to compare due to the different architectures and approaches. Due to this, published physical qubit numbers do not reflect the performance levels of the processor. This is instead achieved through the number of logical qubits or benchmarking metrics such as quantum volume, randomized benchmarking or circuit layer operations per second (CLOPS).


Mike Lazaridis

Mike Lazaridis, OC, FRS (born March 14, 1961) is a Canadian businessman who co-founded Research In Motion (now BlackBerry Limited), the company that created and manufactured the BlackBerry wireless handheld device. He has gone on to become a major supporter of Canadian academic physics and an investor in quantum computing technologies.
While still a student at the University of Waterloo (UW), Lazaridis responded to a 1984 call for proposals from General Motors, and after winning a GM contract, he left university, and with those and other funds, he, Mike Barnstijn, and Douglas Fregin launched Research in Motion (RIM). RIM first developed an award-winning barcode technology for use in the film industry; using those profits it researched wireless data transmission, leading to introduction of BlackBerry wireless mobile devices (1999–2002). Lazaridis would serve in various positions for RIM and BlackBerry, including co-CEO and co-chair of its board (1984–2012).
After a period of charitable and leadership roles, founding science research organizations (see following), Lazaridis joined Fregin in co-founding Quantum Valley Investments in March 2013, to "provide financial and intellectual capital for the further development and commercialization of breakthroughs in Quantum Information Science".
Among many other charitable contributions of Lazaridis and his wife, Ophelia, Mike Lazaridis and Douglas Fregin also facilitated a private fund of CA$100M in 1999 to establish the Perimeter Institute for Theoretical Physics (he, thereafter, formed its Board and recruited its first Director), and his providing vision and funding to found the UW's Institute for Quantum Computing, including funding the advanced science building that hosts the institute.
Lazaridis has repeatedly been recognized for technical and societal contribution, including via an Emmy and an Oscar for the high-speed barcode reader used in film editing (1994 and 1999, respectively), honorary doctoral degrees from Waterloo and McMaster University (2000 and 2005, respectively), a 2002 Ernest C. Manning Awards Foundation Innovation Award (with RIM's Gary Mousseau), investiture as an Officer of the Order of Canada (OC, 2006), and, in acknowledgment of his roles in founding RIM, the Perimeter, and the IQC, his 2014 election as a Fellow of the Royal Society (FRS).


Multiverse Computing

Multiverse Computing is a quantum AI software company headquartered in San Sebastián, Spain, with offices in Madrid, Barcelona, Zaragoza, Paris, Munich, London, Milan, Toronto and San Francisco. The company develops compressed AI models and quantum software.
The AI model compression platform, CompactifAI, delivers compressed AI models by applying tensor network techniques. With its AI model compression technology, the company offers compressed and optimized versions of leading AI models from providers such as OpenAI, Meta, Microsoft, Qwen, DeepSeek or Mistral.
It also offers proprietary open-source AI models such as HyperNova 60B available on HuggingFace.


National Quantum Computing Centre


Noisy intermediate-scale quantum computing


One-way quantum computer


Post-quantum cryptography


PsiQuantum


QuEra


Quantinuum


Quantum Computing Since Democritus


Quantum algorithm


Quantum computing

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Quantum computing scaling laws


Quantum decoherence


Quantum error correction


Quantum information science


Quantum logic gate


Quantum memory


Quantum network


Quantum supremacy


Qubit

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Reservoir computing


Rigetti Computing


Román Orús


Shor's algorithm


Silicon Quantum Computing


Superconducting quantum computing


Threshold theorem


Timeline of quantum computing and communication


Topological quantum computer


Trapped-ion quantum computer


Unconventional computing