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arXiv · 1211.4910

Amplification and suppression of system-bath correlation effects in an open many-body system

Adam Zaman Chaudhry·Jiangbin Gong
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Abstract

Understanding the rich dynamics of open quantum systems is of fundamental interest to quantum control and quantum information processing. By considering an open system of many identical two-level atoms interacting with a common bath, we show that effects of system-bath correlations are amplified in a many-body system via the generation of a short time scale inversely proportional to the number of atoms. Effects of system-bath correlations are therefore considerable even when each individual atom interacts with the bath weakly. We further show that correlation-induced dynamical effects may still be suppressed via the dynamical decoupling approach, but they present a challenge for quantum state protection as the number of atom increases.

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Adam Zaman Chaudhry, Jiangbin Gong. 2012-11-21. Amplification and suppression of system-bath correlation effects in an open many-body system. https://doi.org/10.1103/physreva.87.012129

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