Light source adapted to emit pairs of entangled photons in polarization

摘要

The invention relates to a light source 1 comprising a photonic wire 20 having a single-mode core 21 and adapted to withstand an optical mode degenerated in polarization, comprising an emitter 24 of a pair of photons intended to be entangled in polarization. The photonic wire 20 has a sheath 25 which is asymmetric in revolution and extending along a main transverse axis Atg. In addition, the light source 1 comprises a correction device 50 adapted to induce by electrostatic effect a mechanical deformation of the photonic wire 20 in a plane parallel to the substrate 10, along a deformation axis Ad forming an angle of inclination between 0 ° and 90 °, these values being excluded, with respect to the main transverse axis Atg, the mechanical deformation resulting in mechanical stresses undergone by the emitter 24, thus improving the degree of entanglement of the pair of photons. Figure for the abstract: Fig. 2B