4.8 Article

Frequency-Multiplexed Photon Pairs Over 1000 Modes from a Quadratic Nonlinear Optical Waveguide Resonator with a Singly Resonant Configuration

期刊

PHYSICAL REVIEW LETTERS
卷 123, 期 19, 页码 -

出版社

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.123.193603

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资金

  1. CREST, JST [JST JPMJCR1671]
  2. MEXT/JSPS KAKENHI [JP16H02214, JP18K13483]
  3. Asahi Glass Foundation
  4. Murata Science Foundation
  5. Fujikura Foundation
  6. Kayamori Foundation of Information Science Advancement

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We demonstrate a frequency multiplexed photon pair generation based on a quadratic nonlinear optical waveguide inside a cavity which confines only signal photons without confining idler photons and the pump light. We monolithically constructed the photon pair generator by a periodically poled lithium niobate (PPLN) waveguide with a high reflective coating for the signal photons around 1600 nm and with antireflective coatings for the idler photons around 1520 nm and the pump light at 780 nm at the end faces of the PPLN waveguide. We observed a comblike photon pair generation with a mode spacing of the free spectral range of the cavity. Unlike the conventional multiple resonant photon pair generation experiments, the photon pair generation was incessant within a range of 80 nm without missing teeth due to a mismatch of the energy conservation and the cavity resonance condition of the photons, resulting in over 1000-mode frequency multiplexed photon pairs in this range.

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