Please use this identifier to cite or link to this item:
|Title:||Fidelity for the quantum evolution of a Bose-Einstein condensate|
|Authors:||Liu, J. |
|Citation:||Liu, J., Wang, W., Zhang, C., Niu, Q., Li, B. (2005-12). Fidelity for the quantum evolution of a Bose-Einstein condensate. Physical Review A - Atomic, Molecular, and Optical Physics 72 (6) : -. ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevA.72.063623|
|Abstract:||We investigate fidelity for the quantum evolution of a Bose-Einstein condensate (BEC) and reveal its general property with a simple two-component BEC model. We find that, when the initial state is a coherent state, the fidelity decays with time in the ways of exponential, Gaussian, and power law, depending on the initial location, the perturbation strength, as well as the underlying mean-field classical dynamics. In this case we find a clear correspondence between the fast quantum fidelity decay and the dynamical instability of the mean-field system. With the initial state prepared as a maximally entangled state, we find that the behavior of fidelity has no classical correspondence and observe an interesting behavior of the fidelity: periodic revival, where the period is inversely proportional to the number of bosons and the perturbation strength. An experimental observation of the fidelity decay is suggested. © 2005 The American Physical Society.|
|Source Title:||Physical Review A - Atomic, Molecular, and Optical Physics|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on Sep 21, 2018
WEB OF SCIENCETM
checked on Sep 11, 2018
checked on Mar 12, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.