Measures of Decoherence

Details Measures of Decoherence Measures of Decoherence

2003-03-10

arxiv.org/abs/cond-mat/0303158v2

Proc. SPIE 5105, 243-254 (2003)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Scientific paper

10.1117/12.486792

Methods for quantifying environmentally induced decoherence in quantum systems are investigated. We formulate criteria for measuring the degree of decoherence and consider several representative examples, including a spin interacting with the modes of a bosonic, e.g., phonon, bath. We formulate an approach based on the operator norm measuring the deviation of the actual density matrix from the ideal one which would describe the system without environmental interactions.

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