APL Photonics (Jun 2020)

Sub-megahertz narrow-band photon pairs at 606 nm for solid-state quantum memories

  • Jianji Liu,
  • Jiachen Liu,
  • Ping Yu,
  • Guoquan Zhang

DOI
https://doi.org/10.1063/5.0006021
Journal volume & issue
Vol. 5, no. 6
pp. 066105 – 066105-7

Abstract

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We report on the development of a source of ultra-narrow-band photon pairs using the cavity-enhanced spontaneous parametric down conversion. The photon-pair source has a bandwidth of 265 ± 15 kHz at 606 nm and a spectral brightness of 216 ± 5 pairs/(s · mW · MHz) per longitudinal mode, which could be suitable for Pr3+ ion-based solid-state quantum memories.