Photon number coherence (PNC) has become an important figure of merit to fulfill the security requirements of quantum cryptography, and quantum dots (QDs) embedded in photonic microcavities offer a tunable source of single photons. The “Swing-UP of quantum EmitteR population” (SUPER) scheme can significantly decrease the PNC of the emitted photon, compared to resonant excitation.
Tuning excitation can change photon number coherence in quantum dots
Photon number coherence (PNC) has become an important figure of merit to fulfill the security requirements of quantum cryptography, and quantum dots (QDs) embedded in photonic microcavities offer a tunable source of single photons. The “Swing-UP of quantum EmitteR population” (SUPER) scheme can significantly decrease the PNC of the emitted photon, compared to resonant excitation.