Time-Bin-Modulated Biphotons from Cavity-Enhanced Down-Conversion

Christopher E. Kuklewicz, Franco N. C. Wong, and Jeffrey H. Shapiro
Phys. Rev. Lett. 97, 223601 – Published 27 November 2006

Abstract

We have generated a new type of biphoton state by cavity-enhanced down-conversion in a type-II phase-matched, periodically poled KTiOPO4 crystal. By introducing a weak intracavity birefringence, we obtained signal and idler photons whose quantum interference was modulated between singlet and triplet signatures according to their arrival-time difference. This cavity-enhanced biphoton source is spectrally bright, yielding a single-mode fiber-coupled coincidence rate of 0.7pairs/s per mW of pump power per MHz of down-conversion bandwidth.

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  • Received 19 April 2006

DOI:https://doi.org/10.1103/PhysRevLett.97.223601

©2006 American Physical Society

Authors & Affiliations

Christopher E. Kuklewicz*, Franco N. C. Wong, and Jeffrey H. Shapiro

  • Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA

  • *Current address: University of St. Andrews, St. Andrews KY16 9SS, United Kingdom. Electronic address: chrisk@alum.mit.edu

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Vol. 97, Iss. 22 — 1 December 2006

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