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Optics Letters

Optics Letters


  • Editor: Alan E. Willner
  • Vol. 35, Iss. 15 — Aug. 1, 2010
  • pp: 2591–2593

Frequency downconversion for a quantum network

Yu Ding and Z. Y. Ou  »View Author Affiliations

Optics Letters, Vol. 35, Issue 15, pp. 2591-2593 (2010)

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By using a parametric downconversion process with a strong signal field injection, we demonstrate coherent frequency downconversion from a pump photon to an idler photon. Contrary to a common misunderstanding, we show that the process can be free of quantum noise. With an interference experiment, we demonstrate that the coherence is preserved in the conversion process. This may lead to a high-fidelity quantum state transfer from a high-frequency photon to a low-frequency photon and connects a missing link in a quantum network. With this scheme of coherent frequency downconversion of photons, we propose a method of single-photon WDM.

© 2010 Optical Society of America

OCIS Codes
(190.0190) Nonlinear optics : Nonlinear optics
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.0270) Quantum optics : Quantum optics
(270.5565) Quantum optics : Quantum communications

ToC Category:
Nonlinear Optics

Original Manuscript: February 2, 2010
Revised Manuscript: June 20, 2010
Manuscript Accepted: June 28, 2010
Published: July 26, 2010

Yu Ding and Z. Y. Ou, "Frequency downconversion for a quantum network," Opt. Lett. 35, 2591-2593 (2010)

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