Ultra-coherent single photon source

Hai-Son Nguyen (1) , Gregory Sallen (1) , Christophe Voisin (1) , Philippe Roussignol (1) , Carole Diederichs (1) , Guillaume Cassabois (2)

1 LPA - Laboratoire Pierre Aigrain
2 L2C - Laboratoire Charles Coulomb

We present an original type of single photon source in solid state, based on the coherent laser light scattering by a single InAs quantum dot. We demonstrate that the coherence of the emitted single photons is tailored by the resonant excitation with a spectral linewidth below the radiative limit. Our ultra-coherent source opens the way for integrated quantum devices dedicated to the generation of single photons with high degrees of indistinguishability.

Domaines: Autre [cond-mat.other]

Hai-Son Nguyen, Gregory Sallen, Christophe Voisin, Philippe Roussignol, Carole Diederichs, et al.. Ultra-coherent single photon source. Applied Physics Letters, 2011, 99, pp.261904. ⟨10.1063/1.3672034⟩. ⟨hal-00659992⟩