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

Kroner, M. et al. (2008) Optical detection of single-electron spin resonance in a quantum dot. Physical Review Letters, 100(15), 156803. (doi: 10.1103/PhysRevLett.100.156803)

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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 μ T . In one case, the spin resonance behaves as a driven 3-level λ 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.

Item Type:Articles
Glasgow Author(s) Enlighten ID:Badolato, Professor Antonio
Authors: 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., and Karrai, K.
College/School:College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering
Journal Name:Physical Review Letters
Publisher:American Physical Society
ISSN (Online):1079-7114
Published Online:16 April 2008

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