Non-Markovian dephasing in solid-state single photon sources

K.‐E. Süsse, W. Vogel, D.‐G. Welsch

Shaul Mukamel

Ahsan Nazir, S. D. Barrett

We study the effects of realistic dephasing environments on a pair of solid-state single-photon sources in the context of the Hong-Ou-Mandel dip. By means of solutions for the Markovian or exact non-Markovian dephasing dynamics of the sources, we show that the resulting loss of visibility depends crucially on the timing of photon detection events. Our results demonstrate that the effective visibility can be improved via temporal postselection, and also that time-resolved interference can be a useful probe of the interaction between the emitter and its host environment.

Bi-Ying Wang, Emil V. Denning, Uǧur Meriç Gür +2 more

We present a numerical investigation of the performance of the micropillar cavity single-photon source in terms of collection efficiency and indistinguishability of the emitted photons in the presence of non-Markovian phonon-induced decoherence. We analyze the physics governing the efficiency using a single-mode model, and we optimize efficiency $\ensuremath{\varepsilon}$ and the indistinguishability $\ensuremath{\eta}$ on an equal footing by computing $\ensuremath{\varepsilon}\ensuremath{\eta}$ as function of the micropillar design parameters. We show that $\ensuremath{\varepsilon}\ensuremath{\eta}$ is limited to $\ensuremath{\sim}0.96$ for the ideal geometry due to an inherent tradeoff between efficiency and indistinguishability. Finally, we subsequently consider the influence of realistic fabrication imperfections and Markovian pure dephasing noise on the performance.

Marcelo Pereira de Almeida, Nor Azwa Zakaria, Jihun Cha +2 more

Yuming Wei, Shunfa Liu, Xueshi Li +12 more