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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 17, Iss. 8 — Apr. 13, 2009
  • pp: 6665–6675

Optimizing the retrieval efficiency of stored light pulses

Thorsten Peters, Yi-Hsin Chen, Jian-Siung Wang, Yen-Wei Lin, and Ite A. Yu  »View Author Affiliations

Optics Express, Vol. 17, Issue 8, pp. 6665-6675 (2009)

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We study the retrieval efficiency of stored light pulses based on electromagnetically induced transparency in multiple simultaneously driven Λ-systems. The light pulses are stored in coherences between different Zeeman states of laser-cooled atoms. When the stray magnetic field from the environment is minimized by compensation coils we observed a smaller retrieved probe pulse amplitude than for a small externally applied magnetic field, i.e., a seemingly shorter coherence time. We identify this effect as a beating of several coherences due to a very small uncompensated dc magnetic stray field. By intentionally applying a small magnetic field larger than this stray field we were able to increase the retrieved probe pulse amplitude up to five-fold to the value determined by the true coherence time of our system.

© 2009 Optical Society of America

OCIS Codes
(020.7490) Atomic and molecular physics : Zeeman effect
(190.0190) Nonlinear optics : Nonlinear optics
(270.1670) Quantum optics : Coherent optical effects

ToC Category:
Quantum Optics

Original Manuscript: March 10, 2009
Revised Manuscript: April 4, 2009
Manuscript Accepted: April 4, 2009
Published: April 7, 2009

Thorsten Peters, Yi-Hsin Chen, Jian-Siung Wang, Yen-Wei Lin, and Ite A. Yu, "Optimizing the retrieval efficiency of stored light pulses," Opt. Express 17, 6665-6675 (2009)

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