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Phys. Rev. Lett. 104, 010503 (2010) [4 pages]

Demonstration of a Neutral Atom Controlled-NOT Quantum Gate

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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

Received 5 August 2009; published 8 January 2010

See accompanying Physics Synopsis

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 >8  μm. 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=0.48±0.06. After correcting for atom loss we obtain an a posteriori entanglement fidelity of F=0.58.

© 2010 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.104.010503
DOI:
10.1103/PhysRevLett.104.010503
PACS:
03.67.Lx, 03.67.Bg, 32.80.Ee, 32.80.Qk

*Present address: National Institute of Standards and Technology, Boulder, CO 80305, USA.

See Also

See Also: T. Wilk, A. Gaëtan, C. Evellin, J. Wolters, Y. Miroshnychenko, P. Grangier, and A. Browaeys, Entanglement of Two Individual Neutral Atoms Using Rydberg Blockade, Phys. Rev. Lett. 104, 010502 (2010).

 
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