Spatial and Temporal Resolution in Entangled Ghost Imaging
arXiv:1905.09236 · doi:10.1080/09500340.2019.1657969
Abstract
We show that, when the integration time of the single photon detectors is longer than the correlation time of the biphoton, the attainable spatial resolution in ghost imaging with entangled signal idler pairs generated in type II spontaneous parametric down conversion is limited by the angular spread of single-frequency-signal idler pairs. If, however, the detector integration time is shorter than the biphoton correlation time, the transverse k-vectors of different spectral components combine coherently in the image, improving the spatial resolution.
16 pages, 15 figures, included in proceedings of Quantum Information Science, Sensing, and Computation XI, SPIE, 2019