Patent ID: 9075283
Filing Date: 2015-07-07
Classification: B82Y,G02F,H01L,H04L

Abstract:
1. A polarization-entangled photon pair source comprising: a single quantum emitter that presents a ground state, two states with single elementary excitation, which states are degenerate and of different spins, and a state with two elementary excitations; and a photonic molecule comprising: wherein geometry of the first and second cavities and the distance between the first and second cavities are selected such that an assembly including the first and second coupled cavities presents a first pair of polarization-degenerate modes that are resonant with transitions of the quantum emitter between the state with two elementary excitations and the two degenerate states with single elementary excitation, a second pair of polarization-degenerate modes that are resonant with transitions between the degenerate states with single elementary excitation and the ground state, and the modes of each of the pairs present radiation patterns that overlap by 70% or more.