Acousto-electric single-photon detector

P. D. Batista, M. Gustafsson, M. M., Jr. de Lima, M. Beck, V. I. Talyanskii, R. Hey, P. V. Santos, M. P. Delsing, J. Rarity

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

2 Citations (Scopus)
16 Downloads (Pure)


We propose a novel concept for a semiconductor-based single-photon detector for quantum information processing, which is capable of discriminating the number of photons in a light pulse. The detector exploits the charge transport by a surface acoustic wave (SAW) in order to combine a large photon absorption area (thus providing high photon collection efficiency) with a microscopic charge detection area, where the photo generated charge is detected with resolution at the single electron level using single electron transistors (SETs). We present preliminary results on acoustic transport measured in a prototype for the detector as well as on the fabrication of radio-frequency single-electron transistors (RFSETs) for charge detection. The photon detector is a particular example of acousto-electric nanocircuits that are expected to be able to control both the spatial and the spin degrees of freedom of single electrons. If realized, these circuits will contribute substantially to a scalable quantum information technology.
Original languageEnglish
Title of host publicationProceedings Volume 6583, Photon Counting Applications, Quantum Optics, and Quantum Cryptography
Publication statusPublished - 11 May 2007
Externally publishedYes
EventSPIE International Congress on Optics and Optoelectronics 2007 - Prague, Czech Republic
Duration: 16 Apr 200719 Apr 2007

Publication series

NameProceedings of SPIE


ConferenceSPIE International Congress on Optics and Optoelectronics 2007
Country/TerritoryCzech Republic


  • photon counting detector
  • surface acoustic waves


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