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Título: | High resolution coherent population trapping on a single hole spin in a semiconductor quantum dot |
Autor: | Houel, Julien; Prechtel, Jonathan H.; Kuhlmann, Andreas V.; Brunner, Daniel CSIC ORCID; Kuklewicz, Christopher E.; Gerardot, B. D.; Stoltz, Nick G.; Petroff, P. M.; Warburton, Richard J. | Fecha de publicación: | 12-mar-2014 | Editor: | American Physical Society | Citación: | Physical Review Letters 112: 107401 (2014) | Resumen: | We report high resolution coherent population trapping on a single hole spin in a semiconductor quantum dot. The absorption dip signifying the formation of a dark state exhibits an atomic physicslike dip width of just 10 MHz. We observe fluctuations in the absolute frequency of the absorption dip, evidence of very slow spin dephasing. We identify the cause of this process as charge noise by, first, demonstrating that the hole spin g factor in this configuration (in-plane magnetic field) is strongly dependent on the vertical electric field, and second, by characterizing the charge noise through its effects on the optical transition frequency. An important conclusion is that charge noise is an important hole spin dephasing process. © 2014 American Physical Society. | Versión del editor: | http://dx.doi.org/10.1103/PhysRevLett.112.107401 | URI: | http://hdl.handle.net/10261/116262 | DOI: | 10.1103/PhysRevLett.112.107401 | Identificadores: | doi: 10.1103/PhysRevLett.112.107401 issn: 1079-7114 e-issn: 0031-9007 |
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