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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Editor: Xi-Cheng Zhang
  • Vol. 39, Iss. 6 — Mar. 15, 2014
  • pp: 1481–1484

Demonstration of spectral correlation control in a source of polarization-entangled photon pairs at telecom wavelength

Thomas Lutz, Piotr Kolenderski, and Thomas Jennewein  »View Author Affiliations


Optics Letters, Vol. 39, Issue 6, pp. 1481-1484 (2014)
http://dx.doi.org/10.1364/OL.39.001481


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Abstract

Spectrally correlated photon pairs can be used to improve the performance of long-range fiber-based quantum communication protocols. We present a source based on spontaneous parametric downconversion, which allows one to control spectral correlations within the entangled photon pair without spectral filtering by changing the pump-pulse duration or the characteristics of the coupled spatial modes. The spectral correlations and polarization entanglement are characterized. We find that the generated photon pairs can feature both positive spectral correlations, decorrelation, or negative correlations at the same time as polarization entanglement with a high fidelity of 0.97 (no background subtraction) with the expected Bell state.

© 2014 Optical Society of America

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(270.4180) Quantum optics : Multiphoton processes
(300.6190) Spectroscopy : Spectrometers
(270.5565) Quantum optics : Quantum communications

ToC Category:
Quantum Optics

History
Original Manuscript: November 28, 2013
Revised Manuscript: February 7, 2014
Manuscript Accepted: February 7, 2014
Published: March 11, 2014

Citation
Thomas Lutz, Piotr Kolenderski, and Thomas Jennewein, "Demonstration of spectral correlation control in a source of polarization-entangled photon pairs at telecom wavelength," Opt. Lett. 39, 1481-1484 (2014)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-39-6-1481

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