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Quantum Logic Gates in Optical Lattices

Gavin K. Brennen·Carlton M. Caves·Poul S. Jessen·Ivan H. Deutsch
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Abstract

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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Gavin K. Brennen, Carlton M. Caves, Poul S. Jessen, Ivan H. Deutsch. 1998-12-12. Quantum Logic Gates in Optical Lattices. https://doi.org/10.1103/physrevlett.82.1060

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