'Algorithmic cooling' in a momentum state quantum computer

Details 'Algorithmic cooling' in a momentum state quantum computer 'Algorithmic cooling' in a momentum state quantum computer

2002-10-14

arxiv.org/abs/quant-ph/0210108v1

Physics

Quantum Physics

Scientific paper

10.1103/PhysRevLett.91.037904

We describe a quantum computer based upon the coherent manipulation of two-level atoms between discrete one-dimensional momentum states. Combinations of short laser pulses with kinetic energy dependent free phase evolution can perform the logical invert, exchange, CNOT and Hadamard operations on any qubits in the binary representation of the momentum state, as well as conditional phase inversion. These allow a binary right-rotation, which halves the momentum distribution in a single coherent process. Fields for the coherent control of atomic momenta may thus be designed as quantum algorithms.

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