A Nanomembrane-Based Wavelength-Tunable High-Speed Single-Photon-Emitting Diode
Sprache des Titels:
Englisch
Original Kurzfassung:
We demonstrate an all-electrically operated
wavelength-tunable on demand single-photon source for the
fi
rst time. The device consists of a light-emitting diode in the
form of a semiconductor nanomembrane containing self-
assembled quantum dots integrated onto a piezoelectric
crystal. Triggered single photons are generated via injection
of ultrashort electrical pulses into the diode, while their energy
can be precisely tuned over a broad range by varying the
voltage applied to the piezoelectric crystal. High speed
operation of this single-photon-emitting diode up to 0.8
GHz is demonstrated. These results represent an important step toward the realization of electrically driven sources of
indistinguishable photons on demand.
Forschungs-