Single spins in semiconductor quantum dot microcavities

Sven Höfling, Kristiaan De Greve, Peter L. McMahon, David Press, Leo Yu, Jason S. Pelc, Chandra M. Natarajan, Na Young Kim, Thaddeus Ladd, Eisuke Abe, Sebastian Maier, Dirk Bisping, Fabian Langer, Christian Schneider, Martin Kamp, Robert H. Hadfield, Alfred Forchel, M. M. Fejer, Yoshihisa Yamamoto

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


Semiconductor quantum dots can be utilized to capture single electron or hole spins and they have therewith promise for various applications in fields like spintronics, spin based quantum information processing and chiral photonics. We integrate quantum dots into semiconductor microcavities to enhance light-matter interaction for ultrafast optical manipulation and read-out. Single electron and single hole spins can be statistically or deterministically loaded into the quantum dots and coherently controlled. Within the about μs-coherence times of the spins about 105 complete single qubit rotations can be performed with ultrafast optical pulses. By utilizing a Λ-type energy level system of a single quantum-dot electron spin in a magnetic field and ultrafast non-linear frequency conversion, quantum-dot spin-photon entanglement is observed.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
ISBN (Print)9780819496638
Publication statusPublished - 2013
Event6th Spintronics Symposium - San Diego, CA, United States
Duration: 25 Aug 201329 Aug 2013


Conference6th Spintronics Symposium
Country/TerritoryUnited States
CitySan Diego, CA


  • coherent control
  • entanglement
  • photons
  • quantum dots
  • quantum information processing
  • quantum repeater
  • spins

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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