Coherent Single-Hole Spin in a Semiconductor

Semiconductors have uniquely attractive properties for electronics and photonics. However, it has been difficult to find a highly coherent quantum state in a semiconductor for applications in quantum sensing and quantum information processing. We report coherent population trapping, an optical quant...

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Bibliographic Details
Published in:Science (American Association for the Advancement of Science) 2009-07, Vol.325 (5936), p.70-72
Main Authors: Brunner, Daniel, Gerardot, Brian D, Dalgarno, Paul A, Wüst, Gunter, Karrai, Khaled, Stoltz, Nick G, Petroff, Pierre M, Warburton, Richard J
Format: Article
Language:English
Subjects:
Electrons
Excitons
Information processing
Lasers
Magnetic fields
Nuclear interactions
Nuclear spin
Pumps
Quantum dots
Quantum states
Semiconductor research
Semiconductors
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Summary:Semiconductors have uniquely attractive properties for electronics and photonics. However, it has been difficult to find a highly coherent quantum state in a semiconductor for applications in quantum sensing and quantum information processing. We report coherent population trapping, an optical quantum interference effect, on a single hole. The results demonstrate that a hole spin in a quantum dot is highly coherent.
ISSN:0036-8075
1095-9203
DOI:10.1126/science.1173684