Optical detection of single electron spin resonance in a quantum dot

Autor:	Kroner, Martin, Weiss, Kathrina M., Biedermann, Benjamin, Seidl, Stefan, Manus, Stefan, Holleitner, Alexander, Badolato, Antonio, Petroff, Pierre M., Gerardot, Brian D., Warburton, Richard J., Karrai, Khaled
Rok vydání:	2007
Předmět:	Condensed Matter - Other Condensed Matter
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.100.156803
Popis:	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 coherent 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 micro-T. In one case, the spin resonance behaves exactly as a driven 3-level quantum system (a lambda-system) with weak damping. In another, the dot exhibits remarkably strong (67% signal recovery) and narrow (0.34 MHz) spin resonances with fluctuating resonant positions, evidence of unusual dynamic processes of non-Markovian character. Comment: 4 pages, 5 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/0710.4901 Zobrazit plný text záznamu View this record from Arxiv