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Proceedings Article

Interference of single photons from two separate semiconductor quantum dots

[+] Author Affiliations
Edward B. Flagg, Sergey V. Polyakov, Alex Ling, Alan Migdall, Glenn S. Solomon

Joint Quantum Institute (USA) and Univ. of Maryland (USA)

Andreas Muller

Joint Quantum Institute (USA) and Univ. of Maryland (USA) and Univ. of South Florida (USA)

Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 794818 (February 16, 2011); doi:10.1117/12.874853
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From Conference Volume 7948

  • Advances in Photonics of Quantum Computing, Memory, and Communication IV
  • Zameer U. Hasan; Philip R. Hemmer; Hwang Lee; Charles M. Santori
  • San Francisco, California | January 22, 2011

abstract

We demonstrate interference between discrete photons emitted by two different semiconductor quantum dots and quantify their degree of indistinguishability. The quantum dot emission energies are tuned into resonance by straining the samples. Upon interference on a beamsplitter, the photons are shown to be 18.1% indistinguishable, resulting in a coincidence detection rate below the classical limit. Post-selecting only those detections occurring within a short time of each other increases the measured indistinguishability to 47%. The photons are partially distinguishable due to dephasing of the exciton states, and post-selection is also affected by the detector response time.

© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation

Edward B. Flagg ; Andreas Muller ; Sergey V. Polyakov ; Alex Ling ; Alan Migdall, et al.
"Interference of single photons from two separate semiconductor quantum dots", Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 794818 (February 16, 2011); doi:10.1117/12.874853; http://dx.doi.org/10.1117/12.874853


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