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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 36, Iss. 7 — Apr. 1, 2011
  • pp: 1272–1274

Photon echo without a free induction decay in a double-Λ system

Sarah E. Beavan, Patrick M. Ledingham, Jevon J. Longdell, and Matthew J. Sellars  »View Author Affiliations


Optics Letters, Vol. 36, Issue 7, pp. 1272-1274 (2011)
http://dx.doi.org/10.1364/OL.36.001272


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Abstract

We have characterized a novel photon-echo pulse sequence for a double-Λ-type energy level system where the input and rephasing transitions are different from the applied π pulses. We show that, despite having imperfect π-pulses associated with large coherent emission due to free induction decay (FID), the noise added in the echo mode is only 0.2 ± 0.1 photons per shot, compared to 4 × 10 4 photons in the FID modes. Using this echo pulse sequence in the “rephased amplified spontaneous emission” (RASE) scheme [ Phys. Rev. A 81, 012301 (2010)] will allow for generation of entangled photon pairs that are in different frequency, temporal, and potentially spatial modes to any bright driving fields. The coherence and efficiency properties of this sequence were characterized in a Pr 3 + : Y 2 SiO 5 crystal.

© 2011 Optical Society of America

OCIS Codes
(270.1670) Quantum optics : Coherent optical effects
(260.2710) Physical optics : Inhomogeneous optical media

ToC Category:
Quantum Optics

History
Original Manuscript: December 23, 2010
Revised Manuscript: March 4, 2011
Manuscript Accepted: March 5, 2011
Published: March 31, 2011

Citation
Sarah E. Beavan, Patrick M. Ledingham, Jevon J. Longdell, and Matthew J. Sellars, "Photon echo without a free induction decay in a double-Λ system," Opt. Lett. 36, 1272-1274 (2011)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-36-7-1272

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