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| Quantum Information Science and Technology (QIST) | |
|---|---|
| Name | Quantum Information Science and Technology |
| Field | Physics; Computer Science |
| Notable people | Peter Shor; David Deutsch; Richard Feynman; Charles Bennett; Gilles Brassard; Lov Grover; John Preskill; Alexei Kitaev; Anton Zeilinger; Alain Aspect |
Quantum Information Science and Technology (QIST) is an interdisciplinary field concerned with the storage, manipulation, transmission, and application of information using quantum-mechanical systems. It synthesizes ideas from Albert Einstein, Niels Bohr, Erwin Schrödinger, Werner Heisenberg, Paul Dirac, John von Neumann, Richard Feynman and David Deutsch to develop technologies that exploit superposition, entanglement, and quantum interference. QIST engages laboratories, startups, and governmental programs such as National Quantum Initiative initiatives in the United States Department of Energy, European Commission, Japan Science and Technology Agency, National Institute of Standards and Technology, and national efforts in China and Canada.
The field traces intellectual lineage through experiments and theories associated with Albert Einstein's debates with Niels Bohr, Erwin Schrödinger's thought experiments, and formal developments by John von Neumann and Paul Dirac. Pioneering works by Richard Feynman and David Deutsch framed quantum computation, while seminal protocols by Charles Bennett and Gilles Brassard launched quantum cryptography. Institutional milestones include programs at Massachusetts Institute of Technology, University of Oxford, University of Cambridge, California Institute of Technology, Harvard University, Stanford University, University of Waterloo, and research centers like Perimeter Institute and Max Planck Institute.
Foundations rest on formalism developed by Paul Dirac, John von Neumann, and experimental tests by Alain Aspect and groups led by Anton Zeilinger and Nicolas Gisin. Core concepts—superposition (experimentally probed by Stern–Gerlach experiment), entanglement (highlighted by Einstein–Podolsky–Rosen paradox), and measurement theory—owe to contributions from Werner Heisenberg, Max Born, Erwin Schrödinger and mathematical frameworks advanced by Alexander Holevo and Christopher A. Fuchs. Information-theoretic results include studies by Claude Shannon and extensions by Alexander Holevo and Leonard J. Schulman with implications for capacity theorems and channel coding.
Physical platforms include superconducting qubits advanced by groups at IBM, Google, and Rigetti Computing; trapped ions developed at National Institute of Standards and Technology, University of Innsbruck, and IonQ; photonic systems led by teams at Toshiba Research Europe and Xanadu; and topological proposals inspired by Alexei Kitaev and pursued by collaborations involving Microsoft Quantum and Yale University. Other approaches involve neutral atoms at Atomic Energy of Canada Limited and Rydberg-atom arrays championed by Harvard University and MIT teams. Materials work links to IBM Research, Bell Labs, and Max Planck Institute for Quantum Optics with contributions from John Preskill and Michel Devoret.
Foundational protocols by Charles Bennett and Gilles Brassard (BB84) and entanglement-based schemes influenced experiments by Anton Zeilinger, Nicolas Gisin, and Hideo Mabuchi. Quantum key distribution trials have been coordinated by agencies including European Space Agency, China Academy of Space Technology, and companies such as ID Quantique. Quantum repeater concepts trace to H.-J. Briegel and Nicolas Sangouard work; metropolitan and satellite demonstrations connect to projects by DARPA, ESA, National Aeronautics and Space Administration, China National Space Administration, and collaborations at University of Vienna.
Algorithmic breakthroughs include Peter Shor's factoring algorithm and Lov Grover's search algorithm, with theoretical advances by Scott Aaronson, Umesh Vazirani, and Seth Lloyd. Complexity classes such as BQP, QMA, and relationships to NP and P have been explored by researchers at Institute for Advanced Study, Princeton University, and University of California, Berkeley. Quantum simulation proposals originate from Richard Feynman and Seth Lloyd, with experimental demonstrations at Google AI Quantum and IBM Quantum validating approaches for chemistry and condensed-matter problems relevant to work by Alexei Kitaev.
Error correction theory was founded by Peter Shor, Andrew Steane, and Daniel Gottesman, with stabilizer formalism linked to Gottesman–Knill theorem. Topological codes trace to Alexei Kitaev and development of surface codes is led by groups at Google, IBM, Microsoft Research, and University of Waterloo. Fault-tolerance thresholds and logical qubit engineering are active at Perimeter Institute, Caltech, and Institute for Quantum Computing, building on contributions by John Preskill and Emanuel Knill.
Applications span quantum chemistry simulations relevant to BASF and Roche, optimization explored by D-Wave Systems, and secure communication services by ID Quantique and QuantumCTek. Major industry players include IBM, Google, Microsoft, Amazon Web Services, Alibaba Group, Honeywell, and startups like IonQ, Rigetti Computing, and PsiQuantum. Standardization and policy activity involve International Telecommunication Union, National Institute of Standards and Technology, European Telecommunications Standards Institute, and national initiatives such as National Quantum Initiative with economic and strategic interest from ministries and agencies in United Kingdom, France, Germany, South Korea, and Australia.