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Single-photon source with sub-MHz linewidth for cesium-based quantum information processing
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DOI：10.1007/s11467-023-1317-z.png)
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A single-photon source with narrow bandwidth, high purity, and large brightness can efficiently interact with material qubits strongly coupled to an optical microcavity for quantum information processing. Here, we experimentally demonstrate a degenerate doubly resonant single-photon source at 852 nm by the cavity-enhanced spontaneous parametric down-conversion process with a 100% duty cycle of generation. The single photon source possesses both high purity with a second-order correlation gh(2) (0) = 0.021 and narrow linewidth with Delta v(sp) = (800 +/- 13) kHz. The single-photon source is compatible with the cesium atom D2 line and can be used for cesium-based quantum information processing.
Keyword:
single-photon source
sub-MHz linewidth
few longitudinal modes
quantum information processing
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5.3
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1.4K
被引数:
3.7K
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