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PreprintarXiv licencearXiv

Crossovers between Time-Bin and Energy-Time Entanglement in Homodyned Resonance Fluorescence

  • Zi-Qi Zeng
  • Jian Wang
  • Bang Wu
  • Zhiliang Yuan
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Abstract

We theoretically investigate photonic entanglement generated by homodyning resonance fluorescence from a two-level emitter with a phase-locked laser field. Under weak excitation, increasing the relative laser-field amplitude produces crossovers from time-bin to energy--time and back to time-bin entanglement. The intermediate energy--time regime occurs near amplitude matching, where destructive interference suppresses the single-photon component, allowing the two-photon contributions to dominate the coincidence signal. We evaluate the resulting photon statistics and first-order coherence and characterize the entanglement through violations of the CHSH Bell inequality in a Franson interferometer. This scheme provides a route to controlling photonic entanglement through linear optics and coherent interference.

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Cite

BibTeXRIS
BibTeX
@misc{zeng2026crossovers,
  title = {{Crossovers between Time-Bin and Energy-Time Entanglement in Homodyned Resonance Fluorescence}},
  author = {Zi-Qi Zeng and Jian Wang and Bang Wu and Zhiliang Yuan},
  howpublished = {arXiv},
  year = {2026},
  month = oct,
  doi = {10.48550/arxiv.2610.21428},
  eprint = {2610.21428},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2610.21428},
}
RIS
TY  - UNPB
TI  - Crossovers between Time-Bin and Energy-Time Entanglement in Homodyned Resonance Fluorescence
AU  - Zi-Qi Zeng
AU  - Jian Wang
AU  - Bang Wu
AU  - Zhiliang Yuan
PY  - 2026
DA  - 2026/10/15
PB  - arXiv
DO  - 10.48550/arxiv.2610.21428
UR  - https://arxiv.org/abs/2610.21428
AB  - We theoretically investigate photonic entanglement generated by homodyning resonance fluorescence from a two-level emitter with a phase-locked laser field. Under weak excitation, increasing the relative laser-field amplitude produces crossovers from time-bin to energy--time and back to time-bin entanglement. The intermediate energy--time regime occurs near amplitude matching, where destructive interference suppresses the single-photon component, allowing the two-photon contributions to dominate the coincidence signal. We evaluate the resulting photon statistics and first-order coherence and characterize the entanglement through violations of the CHSH Bell inequality in a Franson interferometer. This scheme provides a route to controlling photonic entanglement through linear optics and coherent interference.
ER  -