Bright Polarized Single-Photon Source Based on a Linear Dipole.

  title={Bright Polarized Single-Photon Source Based on a Linear Dipole.},
  author={S. E. Thomas and M. Billard and N. Coste and Stephen C. Wein and Priya and H{\'e}l{\`e}ne Ollivier and O. Krebs and L. Taza{\"i}rt and A Harouri and Aristide Lema{\^i}tre and Isabelle Sagnes and C. Anton and Lo{\"i}c Lanco and Niccolo Somaschi and J. C. Loredo and Pascale Senellart},
  journal={Physical review letters},
  volume={126 23},
Semiconductor quantum dots in cavities are promising single-photon sources. Here, we present a path to deterministic operation, by harnessing the intrinsic linear dipole in a neutral quantum dot via phonon-assisted excitation. This enables emission of fully polarized single photons, with a measured degree of linear polarization up to 0.994±0.007, and high population inversion-85% as high as resonant excitation. We demonstrate a single-photon source with a polarized first lens brightness of 0.50… 
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