Two electrically tunable quantum dots coupled through a bidirectional waveguide form a radiatively coupled artificial molecule whose emission direction is switched by driving phase, yielding directional single photons and photon pairs.
The beam spots were independently optimized 13 for excitation from free space on top of the waveguide in a resonant fluorescence scheme
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Directional and correlated optical emission from a waveguide-engineered molecule with local control
Two electrically tunable quantum dots coupled through a bidirectional waveguide form a radiatively coupled artificial molecule whose emission direction is switched by driving phase, yielding directional single photons and photon pairs.