Timeline of Quantum Computing

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Big picture

Time period Development summary
1960 Stephen Wiesner invents conjugate coding.
1995 Christopher Monroe and David Wineland at NIST (Boulder, Colorado) experimentally realize the first quantum logic gate – the controlled-NOT gate – with trapped ions, following the Cirac-Zoller proposal. [1]
2012 John Preskill coins the term "quantum supremacy" to describe the point where quantum computers can do things that classical computers can’t.[2]
2017-03-04 Quantum volume is proposed as a measure of the power of quantum computers.[3]
2019-08 Google uses a device with 53 qubits to solve a carefully chosen problem in 3 minutes 20 seconds, which took 2.5 days to solve with a classical computer.[2]

Full timeline

See: https://en.wikipedia.org/wiki/Timeline_of_quantum_computing


  1. Monroe, C; Meekhof, D. M; King, B. E; Itano, W. M; Wineland, D. J (December 18, 1995). "Demonstration of a Fundamental Quantum Logic Gate" (PDF). Physical Review Letters. 75 (25): 4714–4717. Bibcode:1995PhRvL..75.4714M. PMID 10059979. doi:10.1103/PhysRevLett.75.4714. Retrieved December 29, 2007. 
  2. 2.0 2.1 "Why I Coined the Term 'Quantum Supremacy'". Wired. ISSN 1059-1028. Retrieved 2020-02-22. 
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