Coherent Population Trapping of an Electron Spin in a Single Negatively Charged Quantum Dot

Abstract

Coherent population trapping (CPT) refers to the steady-state trapping of population in a coherent superposition of two ground states which are coupled by coherent optical fields to an intermediate state in a three-level atomic system. Recently, CPT has been observed in an ensemble of donor bound spins in GaAs and in single nitrogen vacancy centers in diamond by using a fluorescence technique. Here we report the demonstration of CPT of an electron spin in a single quantum dot (QD) charged with one electron.

to be appeared in Nature Physics

References in corpus (4)

• Hyperfine interaction in a quantum dot: Non-Markovian electron spin dynamics
• Coherent Population Trapping of Single Spins in Diamond Under Optical Excitation
• Stimulated and spontaneous optical generation of electron spin coherence in charged GaAs quantum dots
• Restoring Coherence Lost to a Slow Interacting Mesoscopic Bath

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