09_logic
Quantum Logic Gates in Optical Lattices
Gavin K. Brennen, Carlton M. Caves, Poul S. Jessen*, and Ivan H. Deutsch Center for Advanced Studies, Department of Physics and Astronomy, University of New Mexico, Albuquerque, NM 87131 * Optical Sciences Center, University of Arizona, Tucson, AZ 85721
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 the logical operations, thereby suppressing decoherence.