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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 37, Iss. 7 — Apr. 1, 2012
  • pp: 1220–1222

Passive optical switching of photon pairs using a spontaneous parametric fiber loop

Ningbo Zhao, Lei Yang, and Xiaoying Li  »View Author Affiliations


Optics Letters, Vol. 37, Issue 7, pp. 1220-1222 (2012)
http://dx.doi.org/10.1364/OL.37.001220


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Abstract

We study a novel scheme named the spontaneous parametric fiber loop (SPFL), configured by deliberately introducing dispersive elements into the nonlinear Sagnac loop, and show it can function as a passive switch of photon pairs. The two-photon state coming out of SPFL highly depends on the dispersion induced phase difference of photon pairs counterpropagating in the loop. By properly managing the dispersive elements, the signal and idler photons of a pair with a certain detuning and bandwidth can be directed to the desired spatial modes of SPFL. If the photon pairs are used to generate heralded single photons, the SPFL can be viewed as a switch of single photons. Moreover, our investigation about the dispersion based phase modulation is also beneficial for designing all fiber sources of entangled photon pairs.

© 2012 Optical Society of America

OCIS Codes
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(130.4815) Integrated optics : Optical switching devices
(270.5565) Quantum optics : Quantum communications

ToC Category:
Nonlinear Optics

History
Original Manuscript: November 24, 2011
Revised Manuscript: February 16, 2012
Manuscript Accepted: February 19, 2012
Published: March 27, 2012

Citation
Ningbo Zhao, Lei Yang, and Xiaoying Li, "Passive optical switching of photon pairs using a spontaneous parametric fiber loop," Opt. Lett. 37, 1220-1222 (2012)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-37-7-1220


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