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Demonstration of a Fundamental Quantum Logic Gate

C. Monroe, D. M. Meekhof, B. E. King, W. M. Itano, and D. J. Wineland
Phys. Rev. Lett. 75, 4714 – Published 18 December 1995
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Abstract

We demonstrate the operation of a two-bit "controlled-NOT" quantum logic gate, which, in conjunction with simple single-bit operations, forms a universal quantum logic gate for quantum computation. The two quantum bits are stored in the internal and external degrees of freedom of a single trapped atom, which is first laser cooled to the zero-point energy. Decoherence effects are identified for the operation, and the possibility of extending the system to more qubits appears promising.

  • Received 14 July 1995

DOI:https://doi.org/10.1103/PhysRevLett.75.4714

©1995 American Physical Society

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Nobel Prize—Tools for Quantum Tinkering

Published 12 October 2012

David Wineland and Serge Haroche, who studied photons and atoms in new ways, have won the 2012 Nobel Prize in Physics.

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Authors & Affiliations

C. Monroe, D. M. Meekhof, B. E. King, W. M. Itano, and D. J. Wineland

  • National Institute of Standards and Technology, Boulder, Colorado 80303

References

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Issue

Vol. 75, Iss. 25 — 18 December 1995

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