Indistinguishable single photons with flexible electronic triggering

Adetunmise C Dada*, Ted Silva Santana, Ralph N E Malein, Antonios Koutroumanis, Yong Ma, Joanna M Zajac, Ju Y. Lim, Jin D. Song, Brian D Gerardot

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)
74 Downloads (Pure)


A key ingredient for quantum photonic technologies is an on-demand source of indistinguishable single photons. State-of-the-art indistinguishable single-photon sources typically employ resonant excitation pulses with fixed repetition rates, creating a string of single photons with predetermined arrival times. However, in future applications, an independent electronic signal from a larger quantum circuit or network will trigger the generation of an indistinguishable photon. Further, operating the photon source up to the limit imposed by its lifetime is desirable. Here, we report on the application of a true on-demand approach in which we can electronically trigger the precise arrival time of a single photon as well as control the excitation pulse duration based on resonance fluorescence from a single InAs/GaAs quantum dot. We investigate in detail the effect of the finite duration of an excitation π pulse on the degree of photon antibunching. Finally, we demonstrate that highly indistinguishable single photons can be generated using this on-demand approach, enabling maximum flexibility for future applications.

Original languageEnglish
Pages (from-to)493-498
Number of pages6
Issue number5
Early online date9 May 2016
Publication statusPublished - 20 May 2016


  • Quantum optics
  • Quantum-well, -wire and -dot devices
  • Sources

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Electronic, Optical and Magnetic Materials


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