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|Title:||Amplification and suppression of system-bath-correlation effects in an open many-body system||Authors:||Chaudhry, A.Z.
|Issue Date:||30-Jan-2013||Citation:||Chaudhry, A.Z., Gong, J. (2013-01-30). Amplification and suppression of system-bath-correlation effects in an open many-body system. Physical Review A - Atomic, Molecular, and Optical Physics 87 (1) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.87.012129||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 the effects of system-bath correlations are amplified in a many-body system via the generation of a bath-dependent short time scale (inversely proportional to the number of atoms) in the system dynamics. The effects of system-bath correlations are therefore considerable even when each individual atom interacts with the bath weakly. We further show that the 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. © 2013 American Physical Society.||Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics||URI:||http://scholarbank.nus.edu.sg/handle/10635/95750||ISSN:||10502947||DOI:||10.1103/PhysRevA.87.012129|
|Appears in Collections:||Staff Publications|
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