Adiabatic Quantum Computation in Open Systems

Details Adiabatic Quantum Computation in Open Systems Adiabatic Quantum Computation in Open Systems

2005-02-01

arxiv.org/abs/quant-ph/0502014v2

Phys. Rev. Lett. 95, 250503 (2005)

Physics

Quantum Physics

v2: 4 pages, 1 figure. Published version

Scientific paper

10.1103/PhysRevLett.95.250503

We analyze the performance of adiabatic quantum computation (AQC) under the effect of decoherence. To this end, we introduce an inherently open-systems approach, based on a recent generalization of the adiabatic approximation. In contrast to closed systems, we show that a system may initially be in an adiabatic regime, but then undergo a transition to a regime where adiabaticity breaks down. As a consequence, the success of AQC depends sensitively on the competition between various pertinent rates, giving rise to optimality criteria.

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