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Quantum Computation with a One-Dimensional Optical Lattice

2003; American Physical Society; Volume: 91; Issue: 10 Linguagem: Inglês

10.1103/physrevlett.91.107902

1092-0145

Jiannis K. Pachos, P. L. Knight,

Quantum optics and atomic interactions

We present an economical dynamical control scheme to perform quantum computation on a one-dimensional optical lattice, where each atom encodes one qubit. The model is based on atom tunneling transitions between neighboring sites of the lattice. They can be activated by external laser beams resulting in a two-qubit phase gate or in an exchange interaction. A realization of the Toffoli gate is presented, which requires only a single laser pulse and no individual atom addressing.