Coherent Population Trapping of Electron Spins in a Semiconductor

Autor:	Fu, Kai-Mei C., Santori, Charles, Stanley, Colin, Holland, M. C., Yamamoto, Yoshihisa
Rok vydání:	2005
Předmět:	Condensed Matter::Quantum Gases Quantum Physics Condensed Matter::Materials Science Condensed Matter - Mesoscale and Nanoscale Physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences Condensed Matter::Mesoscopic Systems and Quantum Hall Effect Quantum Physics (quant-ph)
DOI:	10.48550/arxiv.cond-mat/0504012
Popis:	In high-purity n-type GaAs under strong magnetic field, we are able to isolate a lambda system composed of two Zeeman states of neutral-donor bound electrons and the lowest Zeeman state of bound excitons. When the two-photon detuning of this system is zero, we observe a pronounced dip in the excited-state photoluminescence indicating the creation of the coherent population-trapped state. Our data are consistent with a steady-state three-level density-matrix model. The observation of coherent population trapping in GaAs indicates that this and similar semiconductor systems could be used for various EIT-type experiments. Comment: 5 pages, 4 figures replaced 6/25/2007 with PRL version
Databáze:	OpenAIRE
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