Measures of decoherence

被引：27

作者：

Fedichkin, L ^{[1
]}

Fedorov, A ^{[1
]}

Privman, V ^{[1
]}

机构：

[1] Clarkson Univ, Ctr Quantum Devices Technol, Dept Phys, Potsdam, NY 13699 USA

来源：

QUANTUM INFORMATION AND COMPUTATION | 2003年 / 5105卷

关键词：

decoherence; environment; quantum computing; relaxation; spin; thermalization;

D O I：

10.1117/12.486792

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

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.

引用

页码：243 / 254

页数：12

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