Optical measurement of electron spins in quantum dots: quantum Zeno effects

Autor:	N. V. Leppenen, D. S. Smirnov
Rok vydání:	2022
Předmět:	Quantum Physics Condensed Matter - Mesoscale and Nanoscale Physics Mesoscale and Nanoscale Physics (cond-mat.mes-hall) FOS: Physical sciences General Materials Science Quantum Physics (quant-ph)
Zdroj:	Nanoscale. 14:13284-13291
ISSN:	2040-3372 2040-3364
DOI:	10.1039/d2nr01241c
Popis:	We describe the effects of the quantum back action under continuous optical measurement of electron spins in quantum dots. We consider the system excitation by elliptically polarized light close to the trion resonance, which allows for the simultaneous spin orientation and measurement. We microscopically demonstrate that the nuclei-induced spin relaxation can be both suppressed and accelerated by the continuous spin measurement due to the quantum Zeno and anti-Zeno effects, respectively. Our theoretical predictions can be directly compared with the future experimental results and straightforwardly generalized for the pump-probe experiments. 9 pages, 4 figures
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6e9eea65714e62560ecd26817d9a2a07 https://doi.org/10.1039/d2nr01241c Zobrazit plný text záznamu