Frequency chip entangled two-photon source
A frequency slice and two-photon technology, which is applied in the field of quantum information science, can solve the problems of low efficiency of entangled photon pairs, low entanglement purity of frequency slices, and low generation rate of entangled photon pairs, so as to achieve miniaturization, integration, and high practicality. Sexual, high-brightness effect
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[0030] The principles and features of the present invention will be described below with reference to the accompanying drawings. The examples are only used to explain the present invention, but not to limit the scope of the present invention.
[0031] like figure 1 As shown, a frequency slice entangled two-photon source provided by the first embodiment of the present invention includes a pump laser source 1, an optical amplifier 2, a tunable optical attenuator 3, an optical filter 4, and a polarization controller 5 connected in sequence And the dense wavelength division multiplexer 6, wherein, the polarization controller 5 is connected with the transmission end (T end) of the dense wavelength division multiplexer 6;
[0032] The frequency plate entangled two-photon source further includes a first half-wave plate 8, a second half-wave plate 10, a spatial light polarization beam splitter 9, a first fiber collimator 7, a second fiber collimator 11, a third a fiber collimator 12,...
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