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Quantum noise in quantum coherence tomography

Physics Asked by ltt on March 30, 2021

The light source is a pair of entangled photons generated by SPDC. If two point detectors are used for coincidence measurement, the field operator at the detector is the integral over all frequencies.If two spectrometers are used for coincidence measurements, the frequencies can be resolved. What is the field operator for the corresponding frequencies?How to calculate the quantum noise in this case?

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