Quantum Coherence Conservation by Growth in Environmental Dissipation Rate

Details Quantum Coherence Conservation by Growth in Environmental Dissipation Rate Quantum Coherence Conservation by Growth in Environmental Dissipation Rate

2007-09-05

arxiv.org/abs/0709.0562v2

Physics

Quantum Physics

5 pages, 6 figures, elsart, original title: Quantum Wipe Effect for Coherence Conservation, v2: correction in the solution of

Scientific paper

Quantum coherence conservation is shown to be achieved by a very high rate of dissipation of an environmental system coupled with a principal system. This effect is not in the list of previously-known strategies of noise suppression, such as Zeno effect, dynamical decoupling, quantum error correction code, and decoherence free subspace. An analytical solution is found for a simplified model of a single qubit coupled with an environmental single qubit dissipating rapidly. We also show examples of coherence conservation in a spin-boson linear coupling model with a numerical evaluation.

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