Suppression Of Parasitic Nonlinear Processes In Spontaneous Four-Wave Mixing With Linearly Uncoupled Resonators
PHYSICAL REVIEW LETTERS(2021)
摘要
We report on a signal-to-noise ratio characterizing the generation of identical photon pairs of more than 4 orders of magnitude in a ring resonator system. Parasitic noise, associated with single-pump spontaneous four-wave mixing, is essentially eliminated by employing a novel system design involving two resonators that are linearly uncoupled but nonlinearly coupled. This opens the way to a new class of integrated devices exploiting the unique properties of identical photon pairs in the same optical mode.
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