Photon-number parity of heralded single photons from a Bragg-reflection waveguide reconstructed loss-tolerantly via moment generating function

K. Laiho, M. Schmidt, H. Suchomel, M. Kamp, S. Höfling, C. Schneider, J. Beyer, G. Weihs, S. Reitzenstein

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

Due to their strict photon-number correlation, the twin beams produced in parametric down-conversion (PDC) work well for heralded state generation. Often, however, this state manipulation is distorted by the optical losses in the herald and by the higher photon-number contributions inevitable in the PDC process. In order to find feasible figures of merit for characterizing the heralded states, we investigate their normalized factorial moments of the photon number that can be accessed regardless of the optical losses in the detection. We then perform a measurement of the joint photon statistics of twin beams from a semiconductor Bragg-reflection waveguide with transition-edge sensors acting as photon-number-resolving detectors. We extract the photon-number parity of heralded single photons in a loss-tolerant fashion by utilizing the moment generating function. The photon-number parity is highly practicable in quantum state characterization, since it takes into account the complete photon-number content of the target state.
Original languageEnglish
Article number103025
Pages (from-to)1-9
Number of pages9
JournalNew Journal of Physics
Volume21
DOIs
Publication statusPublished - 9 Oct 2019

Keywords

  • Factorial moment of photon number
  • Photon-number parity
  • Moment generating function
  • Parametric-down-conversion
  • Bragg-reflection waveguide
  • Transition-edge sensor

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