Quantum Logic Gates in Optical Lattices

Details Quantum Logic Gates in Optical Lattices Quantum Logic Gates in Optical Lattices

1998-06-06

arxiv.org/abs/quant-ph/9806021v4

Phys.Rev.Lett. 82 (1999) 1060-1063

Physics

Quantum Physics

Revised version, To appear in Phys. Rev. Lett. Three separate postscript figures

Scientific paper

10.1103/PhysRevLett.82.1060

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.

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