Quantum computation in optical lattices via global laser addressing

Details Quantum computation in optical lattices via global laser addressing Quantum computation in optical lattices via global laser addressing

2004-06-11

arxiv.org/abs/quant-ph/0406073v3

New J. Phys. 6 126 (2004)

Physics

Quantum Physics

11 pages, 10 figures, REVTEX. Initialisation and measurement procedures are added

Scientific paper

A scheme for globally addressing a quantum computer is presented along with its realisation in an optical lattice setup of one, two or three dimensions. The required resources are mainly those necessary for performing quantum simulations of spin systems with optical lattices, circumventing the necessity for single qubit addressing. We present the control procedures, in terms of laser manipulations, required to realise universal quantum computation. Error avoidance with the help of the quantum Zeno effect is presented and a scheme for globally addressed error correction is given. The latter does not require measurements during the computation, facilitating its experimental implementation. As an illustrative example, the pulse sequence for the factorisation of the number fifteen is given.

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