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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 17 — Aug. 16, 2010
  • pp: 17749–17755

A contradictory phenomenon of deshelving pulses in a dilute medium used for lengthened photon storage time

Byoung S. Ham  »View Author Affiliations


Optics Express, Vol. 18, Issue 17, pp. 17749-17755 (2010)
http://dx.doi.org/10.1364/OE.18.017749


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Abstract

Lengthening of photon storage time has been an important issue in quantum memories for long distance quantum communications utilizing quantum repeaters. Atom population transfer into an auxiliary spin state has been adapted to increase photon storage time of photon echoes. In this population transfer process phase shift to the collective atoms is inevitable, where the phase recovery condition must be multiple of 2π to satisfy rephasing mechanism. Recent adaptation of the population transfer method to atomic frequency comb (AFC) echoes [Afzelius et al., Phys. Rev. Lett. 104, 040503 (2010)], where the population transfer method is originated in a controlled reversible inhomogeneous broadening technique [Moiseev and Kroll, Phys. Rev. Lett. 87, 173601 (2001)], however, shows contradictory phenomenon violating the phase recovery condition. This contradiction in AFC is reviewed as a general case of optical locking applied to a dilute medium for an optical depth-dependent coherence leakage resulting in partial retrieval efficiency.

© 2010 OSA

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(270.1670) Quantum optics : Coherent optical effects
(300.6240) Spectroscopy : Spectroscopy, coherent transient

ToC Category:
Quantum Optics

History
Original Manuscript: April 30, 2010
Revised Manuscript: July 16, 2010
Manuscript Accepted: July 21, 2010
Published: August 3, 2010

Citation
Byoung S. Ham, "A contradictory phenomenon of deshelving pulses in a dilute medium used for lengthened photon storage time," Opt. Express 18, 17749-17755 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-17-17749


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References

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