Optical detection of single-electron spin resonance in a quantum dot

Martin Kroner, Kathrina M. Weiss, Benjamin Biedermann, Stefan Seidl, Stephan Manus, Alexander W. Holleitner, Antonio Badolato, Pierre M. Petroff, Brian D. Gerardot, Richard J. Warburton, Khaled Karrai

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We demonstrate optically detected spin resonance of a single electron confined to a self-assembled quantum dot. The dot is rendered dark by resonant optical pumping of the spin with a laser. Contrast is restored by applying a radio frequency (rf) magnetic field at the spin resonance. The scheme is sensitive even to rf fields of just a few µT. In one case, the spin resonance behaves as a driven 3-level ? system with weak damping; in another one, the dot exhibits remarkably strong (67% signal recovery) and narrow (0.34 MHz) spin resonances with fluctuating resonant positions, evidence of unusual dynamic processes. © 2008 The American Physical Society.

Original languageEnglish
Article number156803
Pages (from-to)-
Number of pages4
JournalPhysical Review Letters
Issue number15
Publication statusPublished - 18 Apr 2008

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    Kroner, M., Weiss, K. M., Biedermann, B., Seidl, S., Manus, S., Holleitner, A. W., Badolato, A., Petroff, P. M., Gerardot, B. D., Warburton, R. J., & Karrai, K. (2008). Optical detection of single-electron spin resonance in a quantum dot. Physical Review Letters, 100(15), -. [156803]. https://doi.org/10.1103/PhysRevLett.100.156803