A Nanomembrane-Based Wavelength-Tunable High-Speed Single-Photon-Emitting Diode

作者：Zhang Jiaxiang^*; Ding Fei; Zallo Eugenio; Trotta Rinaldo; Hoefer Bianca; Han Luyang; Kumar Santosh; Huo Yongheng; Rastelli Armando; Schmidt Oliver G

来源：Nano Letters, 2013, 13(12): 5808-5813.

DOI：10.1021/nl402307q

• Single-photon source
• quantum dots
• light-emitting diode
• nanomembrane
• piezoelectric crystal
• excitation repetition rate

We demonstrate an all-electrically operated wavelength-tunable on demand single-photon source for the first 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.

• 出版日期2013-12