Please use this identifier to cite or link to this item: https://doi.org/10.1139/cjc-2013-0313
Title: The effect of state preparation in a many-body system
Authors: Chaudhry, A.Z.
Gong, J. 
Keywords: Decoherence
Quantum control
Quantum master equation
Quantum open systems
Issue Date: Feb-2014
Source: Chaudhry, A.Z., Gong, J. (2014-02). The effect of state preparation in a many-body system. Canadian Journal of Chemistry 92 (2) : 119-127. ScholarBank@NUS Repository. https://doi.org/10.1139/cjc-2013-0313
Abstract: For a quantum system interacting with its environment, the role of state preparation is nontrivial. The reason is that before the state preparation procedure, the system and the environment are correlated. Consequently, the state preparation procedure (which acts on the system) indirectly influences the state of the environment depending on the state preparation. In this paper, we use an experimentally realizable model describing a collection of N two-level atoms coupled to a common environment to investigate the influence of the state preparation procedure. We show that the dynamical map describing the evolution of the open quantum system can depend appreciably on the state preparation procedure. Moreover, this effect can be enhanced by increasing N. Our results should be useful for quantum control and quantum tomography. © 2013 Published by NRC Research Press.
Source Title: Canadian Journal of Chemistry
URI: http://scholarbank.nus.edu.sg/handle/10635/98261
ISSN: 00084042
DOI: 10.1139/cjc-2013-0313
Appears in Collections:Staff Publications

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