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 emitted light is filtered by a≈3 GHz narrow etalon filter to remove leaked laser light, and is detected by an SNSPD
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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.