17 February 2011 Interference of single photons from two separate semiconductor quantum dots
Author Affiliations +
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.
Edward B. Flagg, Andreas Muller, Sergey V. Polyakov, Alex Ling, Alan Migdall, Glenn S. Solomon, "Interference of single photons from two separate semiconductor quantum dots", Proc. SPIE 7948, Advances in Photonics of Quantum Computing, Memory, and Communication IV, 794818 (17 February 2011); doi: 10.1117/12.874853; https://doi.org/10.1117/12.874853
PROCEEDINGS
7 PAGES


SHARE
RELATED CONTENT

Two-photon physics with quantum-dot biexcitons
Proceedings of SPIE (March 14 2013)
Coherent two-photon excitation of quantum dots
Proceedings of SPIE (April 29 2016)
Measuring the orbital angular momentum of light
Proceedings of SPIE (February 16 2011)
Twin photons from small quantum dots
Proceedings of SPIE (July 25 2003)

Back to Top