Quantum Logic Gates in Optical Lattices

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.

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

References in corpus (4)

• Cooling the Collective Motion of Trapped Ions to Initialize a Quantum Register
• Resolved-sideband Raman cooling to the ground state of an optical lattice
• Quantum gates with "hot" trapped ions
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