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- W2950792242 abstract "Photonic entanglement is central resource to quantum information sciences, such as quantum communication and quantum computation. The entangled photons generated in conventional spontaneous parametric down-conversion usually yield THz bandwidth which becomes very dim in many applications call for narrow-band entanglement sources. Here we demonstrate the polarization-entanglement photon source with counterpropagating phase matching, which results in an inherent bandwidth of 7.1 GHz at telecom wavelength. The entanglement is measured to violate the Bell inequality by up to 18.5 standard deviations, with Clauser–Horne–Shimony–Holt S-parameter of 2.720±0.039. The quantum state tomography further characterizes the entanglement, with fidelity F=(95.71±0.61)%." @default.
- W2950792242 created "2019-06-27" @default.
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- W2950792242 date "2019-06-17" @default.
- W2950792242 modified "2023-09-26" @default.
- W2950792242 title "Narrow-band source of polarization-entangled photons with counterpropagating domain engineering" @default.
- W2950792242 doi "https://doi.org/10.3390/the-2nd-aqe-06233" @default.
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