NDLI: Effect of squeezing and Planck constant dependence in short time semiclassical entanglement

Content Provider	Springer Nature Link
Author	Joseph, Sijo K. Chew, Lock Yue Sanjuan, Miguel A.F.
Copyright Year	2014
Abstract	In this paper, we investigate into the short time semiclassical entanglement of a general class of two-coupled harmonic oscillator system that includes additional nonlinear terms in the potential of the form λ x m y n , such that the sum of the degree m and n equals to a fixed constant. An analytical expression of the short time linear entropy is derived and it shows a clear relationship between the single mode squeezing and the entanglement dynamics. In addition to that, our theoretical analysis has shown that the short time semiclassical entanglement entropy displays a dependence on the Planck constant ħ of the form ħ m + n − 2 for this class of systems. By applying our results to the linearly coupled harmonic oscillator, the Barbanis-Contopoulos, the Hénon-Heiles and the Pullen-Edmonds Hamiltonian, we have found a good correspondence between the numerical and analytical results in the short-time regime. Interestingly, our results have demonstrated both analytically and numerically that an appropriate manipulation of initial squeezing can have the significant effect of enhancing the short time semiclassical entanglement between the two subsystems.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISSN	14346060
Journal	The European Physical Journal D - Atomic, Molecular, Optical and Plasma Physics
Volume Number	68
Issue Number	8
e-ISSN	14346079
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2014-08-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Nonlinear Dynamics Atomic, Molecular, Optical and Plasma Physics Physical Chemistry Quantum Physics Quantum Information Technology, Spintronics Spectroscopy/Spectrometry
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics

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