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Bibliographic Details
Main Authors: Roeder, F., Pollmann, R., Stefszky, M., Santandrea, M., Luo, K. -H., Quiring, V., Ricken, R., Eigner, C., Brecht, B., Silberhorn, C.
Format: Preprint
Published: 2023
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Online Access:https://arxiv.org/abs/2310.04293
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Table of Contents:
  • 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 $100\,\mathrm{fs}$ 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 $\mathrm{Ti:LiNbO}_3$ waveguide