Boosting energy-time entanglement using coherent time-delayed feedback

Kisa Barkemeyer; Marcel Hohn; Stephan Reitzenstein; Alexander Carmele

doi:10.1103/PhysRevA.103.062423

Boosting energy-time entanglement using coherent time-delayed feedback

Quantum Physics 2021-07-02 v2

Authors: Kisa Barkemeyer , Marcel Hohn , Stephan Reitzenstein , Alexander Carmele

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Abstract

The visibility of the two-photon interference in the Franson interferometer serves as a measure of the energy-time entanglement of the photons. We propose to control the visibility of the interference in the second-order coherence function by implementing a coherent time-delayed feedback mechanism. Simulating the non-Markovian dynamics within the matrix product state framework, we find that the visibility for two photons emitted from a three-level system (3LS) in ladder configuration can be enhanced significantly for a wide range of parameters by slowing down the decay of the upper level of the 3LS.

Keywords

quantum optics time-delayed feedback control

Cite

@article{arxiv.2103.02689,
  title  = {Boosting energy-time entanglement using coherent time-delayed feedback},
  author = {Kisa Barkemeyer and Marcel Hohn and Stephan Reitzenstein and Alexander Carmele},
  journal= {arXiv preprint arXiv:2103.02689},
  year   = {2021}
}

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