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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Grover Swartzlander
  • Vol. 30, Iss. 3 — Mar. 1, 2013
  • pp: 475–481

Entanglement dynamics of three atoms under quantum-jump-based feedback control

Li Chen, Hong-Fu Wang, and Shou Zhang  »View Author Affiliations


JOSA B, Vol. 30, Issue 3, pp. 475-481 (2013)
http://dx.doi.org/10.1364/JOSAB.30.000475


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Abstract

We investigate entanglement dynamics of three driven atoms off-resonantly coupled with a single-mode cavity under quantum-jump-based feedback control. The results demonstrate that the tripartite entanglement can be effectively enhanced and the steady W state and asymmetric W states can be obtained by setting the Rabi frequencies of classical fields and choosing the local quantum feedback control. Furthermore, the tripartite decoherence-free entangled states are found when the atoms are driven by classical fields with appropriate Rabi frequencies. The asymmetric W states and W state can be converted into each other via feedback control. In theory, the multiqubit W state can be generated and stabilized by our approach.

© 2013 Optical Society of America

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

History
Original Manuscript: September 6, 2012
Revised Manuscript: November 17, 2012
Manuscript Accepted: December 17, 2012
Published: February 5, 2013

Citation
Li Chen, Hong-Fu Wang, and Shou Zhang, "Entanglement dynamics of three atoms under quantum-jump-based feedback control," J. Opt. Soc. Am. B 30, 475-481 (2013)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-30-3-475

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