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Proceedings Paper

Interference of single photons from two separate semiconductor quantum dots
Author(s): Edward B. Flagg; Andreas Muller; Sergey V. Polyakov; Alex Ling; Alan Migdall; Glenn S. Solomon
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Paper 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.

Paper Details

Date Published: 17 February 2011
PDF: 7 pages
Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 794818 (17 February 2011); doi: 10.1117/12.874853
Show Author Affiliations
Edward B. Flagg, Joint Quantum Institute (United States)
Univ. of Maryland (United States)
Andreas Muller, Joint Quantum Institute (United States)
Univ. of Maryland (United States)
Univ. of South Florida (United States)
Sergey V. Polyakov, Joint Quantum Institute (United States)
Univ. of Maryland (United States)
Alex Ling, Joint Quantum Institute (United States)
Univ. of Maryland (United States)
Alan Migdall, Joint Quantum Institute (United States)
Univ. of Maryland (United States)
Glenn S. Solomon, Joint Quantum Institute (United States)
Univ. of Maryland (United States)


Published in SPIE Proceedings Vol. 7948:
Advances in Photonics of Quantum Computing, Memory, and Communication IV
Zameer Ul Hasan; Philip R. Hemmer; Hwang Lee; Charles M. Santori, Editor(s)

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