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Demonstration of a Neutral Atom Controlled-NOT Quantum Gate

Source: Phys. Rev. Lett. 104, 010503 (2010); doi:10.1103/PhysRevLett.104.010503

Published 8 January 2010

PACS
  • 03.67.Lx
    Quantum computation architectures and implementations
  • 03.67.Bg
    Entanglement production and manipulation (quantum information)
  • 32.80.Ee
    Rydberg states of atoms
  • 32.80.Qk
    Coherent control of atomic interactions with photons
  • YEAR: 2010
PUBLICATION DATA
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L. Isenhower, E. Urban, X. L. Zhang, A. T. Gill, T. Henage, T. A. Johnson, T. G. Walker, and M. Saffman
Department of Physics, University of Wisconsin, 1150 University Avenue, Madison, Wisconsin 53706 USA
We present the first demonstration of a CNOT gate between two individually addressed neutral atoms. Our implementation of the CNOT uses Rydberg blockade interactions between neutral atoms held in optical traps separated by >8m. Using two different gate protocols we measure CNOT fidelities of F=0.73 and 0.72 based on truth table probabilities. The gate was used to generate Bell states with fidelity F=0.480.06. After correcting for atom loss we obtain an aposteriori entanglement fidelity of F=0.58. ©2010 The American Physical Society
History: Received 5 August 2009; published 8 January 2010
Permalink: http://link.aps.org/abstract/PRL/v104/e010503
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