Measuring the entanglement of photons produced by a nanosecond pulsed source

  title={Measuring the entanglement of photons produced by a nanosecond pulsed source},
  author={M'onica B. Aguero and Alejandro Andr{\'e}s Hnilo and Marcelo G. Kovalsky},
  journal={Journal of The Optical Society of America B-optical Physics},
A source of entangled photons based on well-separated laser pump pulses (PDs) with a duration in the nanosecond range may be useful in many applications. Yet, such a source has intrinsic problems arising from the simultaneous arrival of signal and noise photons to the detectors, which makes the methods unsuitable for dealing with accidental (or spurious) coincidences applied in the continuous-wave or mode-locked pump regimes. Those problems are analyzed, and practical methods to calculate the… 

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