• DOI:10.1364/OPTICA.3.000433
• Corpus ID: 118393252

Scalable performance in solid-state single-photon sources

@article{Loredo2016ScalablePI,
  title={Scalable performance in solid-state single-photon sources},
  author={J. C. Loredo and Nordin Zakaria and Niccol{\`o} Somaschi and C. Anton and Lorenzo De Santis and V Giesz and Thomas Grange and Matthew A. Broome and Olivier Gazzano and G. Coppola and Isabelle Sagnes and Aristide Lema{\^i}tre and Alexia Auff{\`e}ves and Pascale Senellart and Marcelo P. Almeida and Andrew G. White},
  journal={arXiv: Quantum Physics},
  year={2016},
  volume={3},
  pages={433-440}
}

• J. C. Loredo, N. Zakaria, +13 authors A. G. White
• Published 4 January 2016
• Physics
• arXiv: Quantum Physics

The desiderata for an ideal photon source are high brightness, high single-photon purity, and high indistinguishability. Defining brightness at the first collection lens, these properties have been simultaneously demonstrated with solid-state sources; however, absolute source efficiencies remain close to the 1% level and indistinguishability has only been demonstrated for photons emitted consecutively on the few-nanoseconds scale. Here, we employ deterministic quantum dot-micropillar devices to demonstrate solid-state single-photon sources with scalable performances. In one device, an absolute brightness at the output of a single-mode fiber of 14% and purities of 97.1%–99.0% are demonstrated. When nonresontantly excited, it emits a long stream of photons that exhibit indistinguishability up to 70%—above the classical limit of 50%—even after 33 consecutively emitted photons with a 400 ns separation between them. Resonant excitation in other devices results in near-optimal indistinguishability values: 96% at short timescales, remaining at 88% in timescales as large as 463 ns after 39 emitted photons. The performance attained by our devices brings solid-state sources into a regime suitable for scalable implementations.