Journal
PHYSICAL REVIEW APPLIED
Volume 11, Issue 3, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevApplied.11.034007
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Funding
- China Scholarship Council (CSC)
- National Natural Science Foundation of China [61671455]
- Danish National Research Foundation [DNRF123]
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We generate correlated photon pairs in an all-pass silicon microring resonator using continuous-wave pumped spontaneous four-wave mixing and we characterize in detail the optical bistability in the non-classical single-photon regime. Special attention is given to the resonance-locked method by balancing the pump-induced heating and the active off-chip cooling, leading to stable operation of the photon-pair source. The maximal coincidence rate of 20.53 +/- 0.34 Hz, maximal coincidence-to-accidental ratio of 654 +/- 125, and minimal zero-delayed heralded second-order correlation of 0.14 +/- 0.09 are achieved. The wavelengths of photon pairs remain unchanged at different pump power, indicating that our source is more compatible with the common communication systems than those using conventional on-resonance strategies, that tunes the pump wavelength. This work not only experimentally validates the nonclassical bistability behaviors, but also puts forward a simple method of pump-resonance matching for high-quality performance.
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