Multichannel Photon-Pair Generation with Strong and Uniform Spectral Correlation in a Silicon Microring Resonator

Xiaodong Shi, Kai Guo, Jesper Bjerge Christensen, Mario A. Usuga Castaneda, Xuanming Liu, Haiyan Ou, and Karsten Rottwitt
Phys. Rev. Applied 12, 034053 – Published 26 September 2019

Abstract

We experimentally demonstrate a photon-pair source, based on continuous-wave pumped spontaneous four-wave mixing in a silicon microring resonator, which efficiently generates photon pairs with high coincidence counts, high brightness, and high coincidence-to-accidental ratio at multiple resonance wavelengths matching a standard International Telecommunication Union (ITU) frequency grid. The signal-idler joint spectral intensity is measured with a very high resolution of 2pm over multiple wavelengths by an optical spectrum analyzer through probe-swept stimulated four-wave mixing, allowing an accurate quantification of the spectral correlation. Strong spectral correlation and uniform degree of quantum correlation are observed from the source, and the measured amount of spectral modes agrees well with that obtained by unheralded second-order correlation measurements.

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  • Received 2 April 2019
  • Revised 2 August 2019

DOI:https://doi.org/10.1103/PhysRevApplied.12.034053

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & Technology

Authors & Affiliations

Xiaodong Shi1, Kai Guo2,*, Jesper Bjerge Christensen1, Mario A. Usuga Castaneda1, Xuanming Liu2, Haiyan Ou1, and Karsten Rottwitt1

  • 1Department of Photonics Engineering, Technical University of Denmark, Kongens Lyngby 2800, Denmark
  • 2Institute of Systems Engineering, AMS, Beijing 100039, China

  • *guokai07203@hotmail.com

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Vol. 12, Iss. 3 — September 2019

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