Infrared wavelength quantum communications based on single electron transistors

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


We propose to employ a selective formation method to embed an isolated self assembled quantum dot into a n-i-n junction to implement single electron transistors (SETs). The absorption and emission spectrum of SETS are theoretically studied by the Keldysh Green function method. The electronic levels and Coulomb interactions of electrons of InAs quantum dot (QD) are evaluated by an effective mass model. It is found that Coulomb interaction and level mixing in the many body open system lead to double peaks associated with the intraband transitions involving two lowest levels of the QD. We can electrically control the SETs as a single-photon source and double-photon source for 10µm wavelength. The single photon source can be used in the application of quantum cryptograph, and the double-photon source can be utilized in the teleportation.

Original languageEnglish
Title of host publicationQuantum Information Science
Subtitle of host publicationProceedings of the 1st Asia-Pacific Conference: National Cheng Kung University, Taiwan Dec 10-13, 2004
PublisherWorld Scientific Publishing Co.
Number of pages10
ISBN (Electronic)9789812701633
ISBN (Print)9812564608, 9789812564603
StatePublished - 1 Jan 2005


  • Keldysh green’s function
  • Quantum dots
  • Single electron transistors


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