Overcoming the Hong-Ou-Mandel interference limitation for the second photon from a two-photon cascade

@misc{joos2026overcoming,
  title = {{Overcoming the Hong-Ou-Mandel interference limitation for the second photon from a two-photon cascade}},
  author = {Raphael Joos and Michal Vyvlecka and Tim Strobel and Benjamin Breiholz and Furkan Aglarci and Ponraj Vijayan and Hans-Georg Babin and Arne Ludwig and Michael Jetter and Simone L. Portalupi and Peter Michler},
  howpublished = {arXiv},
  year = {2026},
  month = sep,
  doi = {10.48550/arxiv.2609.24858},
  eprint = {2609.24858},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2609.24858},
  note = {CC BY 4.0},
}

TY  - UNPB
TI  - Overcoming the Hong-Ou-Mandel interference limitation for the second photon from a two-photon cascade
AU  - Raphael Joos
AU  - Michal Vyvlecka
AU  - Tim Strobel
AU  - Benjamin Breiholz
AU  - Furkan Aglarci
AU  - Ponraj Vijayan
AU  - Hans-Georg Babin
AU  - Arne Ludwig
AU  - Michael Jetter
AU  - Simone L. Portalupi
AU  - Peter Michler
PY  - 2026
DA  - 2026/09/21
PB  - arXiv
DO  - 10.48550/arxiv.2609.24858
UR  - https://arxiv.org/abs/2609.24858
AB  - Quantum emitters such as semiconductor quantum dots can provide entangled photon pairs emitting from a system of cascaded states. However, the resulting temporal correlation between the two photons from the three-level ladder system has been shown to set a limit on the achievable two-photon interference. In this work, we show that such limitation, for photons emitted by the second transition, is only due to reduced temporal overlap at the interference beam splitter. We investigate this theoretically and experimentally by determining time-resolved four-photon coincidences between two successively emitted photon pairs. Post-emission synchronization shows the recovery of maximum interference visibility; in prospective quantum networks this could be achieved via deterministic quantum memories.
ER  -