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- W2286894952 abstract "We demonstrate a silicon-chip biphoton source with an unprecedented quantum cross correlation up to ${rm g_{si}^{(2)}(0) = (2.58 pm 0.16) times 10^4}$. The emitted biphotons are intrinsically single-mode, with self correlations of ${rm g_{ss}^{(2)}(0) = 1.90 pm 0.05}$ and ${rm g_{ii}^{(2)}(0) = 1.87 pm 0.06}$ for signal and idler photons, respectively. We observe the waveform asymmetry of cross correlation between signal and idler photons and reveal the identical and non-exponential nature of self correlations of individual signal and idler photon modes, which is a nature of cavity-enhanced nonlinear optical processes. The high efficiency and high purity of the biphoton source allow us to herald single photons with a conditional self correlation $rm g_{c}^{(2)}(0)$ as low as $rm 0.0059 pm 0.0014$ at a pair flux of $rm 1.95 times 10^5$ pairs/s, which remains below $rm 0.026 pm 0.001$ for a biphoton flux up to $rm 2.93 times 10^6$ pairs/s, with a photon preparation efficiency in the single-mode fiber up to 51%, among the best values that have ever been reported. Our work unambiguously demonstrates that silicon photonic chips are superior material and device platforms for integrated quantum photonics." @default.
- W2286894952 created "2016-06-24" @default.
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- W2286894952 date "2016-02-25" @default.
- W2286894952 modified "2023-09-25" @default.
- W2286894952 title "Biphoton statistic of quantum light generated on a silicon chip" @default.
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