Entropy production and fidelity for quantum many-body systems with noise

Details Entropy production and fidelity for quantum many-body systems with noise Entropy production and fidelity for quantum many-body systems with noise

2004-03-13

arxiv.org/abs/quant-ph/0403097v1

Proceedings of SPIE - The International Society for Optical Engineering; 2004; v.5472, p.252-265

Physics

Quantum Physics

RevTex, 13 pages, 5 figures

Scientific paper

10.1117/12.547589

We study dynamical properties of systems with many interacting Fermi-particles under the influence of static imperfections. Main attention is payed to the time dependence of the Shannon entropy of wave packets, and to the fidelity of the dynamics. Our question is how the entropy and fidelity are sensitive to the noise. In our study, we use both random matrix models with two-body interaction and dynamical models of a quantum computation. Numerical data are compared with analytical predictions.

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