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Phys. Rev. Lett. 82, 1060–1063 (1999)

Quantum Logic Gates in Optical Lattices

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Gavin K. Brennen1, Carlton M. Caves1, Poul S. Jessen2, and Ivan H. Deutsch1
1Center for Advanced Studies, Department of Physics and Astronomy, University of New Mexico, Albuquerque, New Mexico 87131
2Optical Sciences Center, University of Arizona, Tucson, Arizona 85721

Received 29 May 1998; published in the issue dated 1 February 1999

See accompanying Physics Focus

We propose a new system for implementing quantum logic gates: neutral atoms trapped in a very far-off-resonance optical lattice. Pairs of atoms are made to occupy the same well by varying the polarization of the trapping lasers, and then a near-resonant electric dipole is induced by an auxiliary laser. A controlled-NOT can be implemented by conditioning the target atomic resonance on a resolvable level shift induced by the control atom. Atoms interact only during logical operations, thereby suppressing decoherence.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.82.1060
DOI:
10.1103/PhysRevLett.82.1060
PACS:
03.67.Lx, 32.80.Lg, 32.80.Pj, 32.80.Qk
 
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