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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 | Citation: | 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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