Measurement of ultrashort bi-photon correlation times with an integrated two-colour broadband SU(1,1)-interferometer
arXiv:2310.04293 · doi:10.1103/PRXQuantum.5.020350
Abstract
The bi-photon correlation time, a measure for the conditional uncertainty in the temporal arrival of two photons from a photon pair source, is a key performance identifier for many quantum spectroscopy applications, with shorter correlation times typically yielding better performance. Furthermore, it provides fundamental insight into the effects of dispersion on the bi-photon state. Here, we retrieve ultrashort bi-photon correlation times of around by measuring simultaneously spectral and temporal interferograms at the output of an SU(1,1) interferometer based on an integrated broadband parametric down-conversion source in a waveguide
arXiv comment8 pages, 5 figures
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