Complete quantum control of a single quantum dot spin using ultrafast optical pulses

David Press (), Thaddeus D. Ladd, Bingyang Zhang and Yoshihisa Yamamoto
Additional contact information
David Press: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
Thaddeus D. Ladd: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
Bingyang Zhang: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA
Yoshihisa Yamamoto: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA

Nature, 2008, vol. 456, issue 7219, 218-221

Abstract: Single spin caught in the light A single electron spin confined within a semiconductor nanostructure is an ideal qubit for quantum computing, as it is relatively stable against decoherence and is easily manipulated electrically or optically. Full quantum control involving initialization, spin rotation and detection, has been demonstrated previously using electrically controlled radio-frequency pulses, but this method will be too slow for the construction of quantum computing circuits operating at useful clock speeds. Optical manipulation of electron spin allows much faster operations and has the added advantage that it allows for an optical interface. Press et al. now achieve ultrafast optical control of electron spin in a quantum dot and demonstrate, in combination with optical initialization and detection, a single-qubit logic gate operation, involving a sequence of two optical pulses. Such high-speed operation could conceivably lead to quantum computing devices at gigahertz clock speeds.

Date: 2008
References: Add references at CitEc
Citations: View citations in EconPapers (7)

Downloads: (external link)
https://www.nature.com/articles/nature07530 Abstract (text/html)
Access to the full text of the articles in this series is restricted.

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:nature:v:456:y:2008:i:7219:d:10.1038_nature07530

Ordering information: This journal article can be ordered from
https://www.nature.com/

DOI: 10.1038/nature07530

Access Statistics for this article

Nature is currently edited by Magdalena Skipper

More articles in Nature from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().