A Coherent Single-Hole Spin in a Semiconductor

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Science  03 Jul 2009:
Vol. 325, Issue 5936, pp. 70-72
DOI: 10.1126/science.1173684

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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.

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