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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 3 — Feb. 11, 2013
  • pp: 3501–3515

Achieving maximum entanglement between two nitrogen-vacancy centers coupling to a whispering-gallery-mode microresonator

Siping Liu, Jiahua Li, Rong Yu, and Ying Wu  »View Author Affiliations

Optics Express, Vol. 21, Issue 3, pp. 3501-3515 (2013)

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We investigate the entanglement generation between two nitrogen-vacancy (NV) centers in diamond nanocrystal coupled to a high-Q counterpropagating twin whispering-gallery modes (WGMs) of a microtoroidal resonator. For looking into the degree and dynamics of the entanglement, we calculate the concurrence using the microscopic master equation approach. The influences of the coupling strength between the WGMs (or the size of the two spherical NV centers), the distance between two NV centers, the frequency detuning between the NV center and microresonator, and the initial state of the system on the dynamics of concurrence are discussed in detail. It is found that the maximum entanglement between the two NV centers can be created by properly adjusting these controllable system parameters. Our results may provide further insight into future solid-state cavity quantum electrodynamics (CQED) system for quantum information engineering.

© 2013 OSA

OCIS Codes
(160.2220) Materials : Defect-center materials
(270.5580) Quantum optics : Quantum electrodynamics
(140.3945) Lasers and laser optics : Microcavities
(270.5585) Quantum optics : Quantum information and processing

ToC Category:
Quantum Optics

Original Manuscript: December 10, 2012
Revised Manuscript: January 23, 2013
Manuscript Accepted: January 25, 2013
Published: February 4, 2013

Siping Liu, Jiahua Li, Rong Yu, and Ying Wu, "Achieving maximum entanglement between two nitrogen-vacancy centers coupling to a whispering-gallery-mode microresonator," Opt. Express 21, 3501-3515 (2013)

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