Development of a numerical algorithm for identifying single photon detection with a quantum dot

T. Fujita, T. Asayama, H. Kiyama, A. Oiwa, S. Tarucha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We present a numerical identification scheme for single photon detection (SPD) using a lateral GaAs Quantum Dot (QD). Trapping and resetting of the photo-generated single electrons can be sensed by the quantum point contact (QPC) fabricated near the dot. A step-like increase of the QPC current can be observed after laser pulse irradiation meaning an electron is released from the dot. This increase could only be observed if a photo-generated electron had been trapped in the dot. We show that our developed scheme successfully identifies SPD and measures computationally the trapping time of the generated electron. This work will allow us to analyze single photon to electron spin conversion in a statistical manner.

Original languageEnglish
Title of host publicationPhysics of Semiconductors - 30th International Conference on the Physics of Semiconductors, ICPS-30
Pages1029-1030
Number of pages2
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event30th International Conference on the Physics of Semiconductors, ICPS-30 - Seoul, Korea, Republic of
Duration: Jul 25 2010Jul 30 2010

Publication series

NameAIP Conference Proceedings
Volume1399
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference30th International Conference on the Physics of Semiconductors, ICPS-30
Country/TerritoryKorea, Republic of
CitySeoul
Period7/25/107/30/10

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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