NDLI: Controlling Collapse and Revival of Multipartite Entanglement Under Decoherence via Classical Driving Fields

Content Provider	Springer Nature Link
Author	Zhang, Jian Song Liu, Fen Chen, Ai Xi
Copyright Year	2016
Abstract	We investigate the effects of classical driving fields on the dynamics of purity, spin squeezing, and genuine multipartite entanglement (based on the Peres-Horodecki criterion ) of three two-level atoms within three separated cavities prepared in coherent states in the presence of decoherence. The three qubits are initially entangled and driven by classical fields. We obtain an analytical solution of the present system using the superoperator method. We find that the genuine multipartite entanglement measured by an entanglement monotone based on the Peres-Horodecki criterion can stay zero for a finite time and revive partially later. This phenomenon is similar to the sudden death of entanglement of two qubits and can be controlled efficiently by the classical driving fields. The amount of purity, spin squeezing, and genuine multipartite entanglement decrease with the increase of mean photon number of cavity fields. Particularly, the purity and genuine multipartite entanglement could be simultaneously improved by the classical driving fields. In addition, there is steady state genuine multipartite entanglement which can also be adjusted by the classical driving fields.
Starting Page	4016
Ending Page	4026
Page Count	11
File Format	PDF
ISSN	00207748
Journal	International Journal of Theoretical Physics
Volume Number	55
Issue Number	9
e-ISSN	15729575
Language	English
Publisher	Springer US
Publisher Date	2016-04-29
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Cavity QED Dissipation Entanglement dynamics Purity Physics Quantum Physics Elementary Particles, Quantum Field Theory Theoretical, Mathematical and Computational Physics
Content Type	Text
Resource Type	Article
Subject	Physics and Astronomy Mathematics

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