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

Oliver Gywat; Hans Andreas Engel; Daniel Loss; R. J. Epstein; F. M. Mendoza; D. D. Awschalom

doi:10.1103/PhysRevB.69.205303

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

Oliver Gywat^*, Hans Andreas Engel, Daniel Loss, R. J. Epstein, F. M. Mendoza, D. D. Awschalom

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

36 Scopus citations

Abstract

We propose a method based on optically detected magnetic resonance (ODMR) to measure the decoherence time T₂ of a single electron spin in a semiconductor quantum dot. The electron spin resonance (ESR) of a single excess electron on a quantum dot is probed by circularly polarized laser excitation. Due to Pauli blocking, optical excitation is only possible for one of the electron-spin states. The photoluminescence is modulated due to the ESR which enables the measurement of electron-spin decoherence. We study different possible schemes for such an ODMR setup.

Original language	English
Article number	205303
Pages (from-to)	205303-1-205303-5
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	69
Issue number	20
DOIs	https://doi.org/10.1103/PhysRevB.69.205303
State	Published - May 2004
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Optical detection of single-electron spin decoherence in a quantum dot",

abstract = "We propose a method based on optically detected magnetic resonance (ODMR) to measure the decoherence time T2 of a single electron spin in a semiconductor quantum dot. The electron spin resonance (ESR) of a single excess electron on a quantum dot is probed by circularly polarized laser excitation. Due to Pauli blocking, optical excitation is only possible for one of the electron-spin states. The photoluminescence is modulated due to the ESR which enables the measurement of electron-spin decoherence. We study different possible schemes for such an ODMR setup.",

author = "Oliver Gywat and Engel, \{Hans Andreas\} and Daniel Loss and Epstein, \{R. J.\} and Mendoza, \{F. M.\} and Awschalom, \{D. D.\}",

year = "2004",

month = may,

doi = "10.1103/PhysRevB.69.205303",

language = "English",

volume = "69",

pages = "205303--1--205303--5",

journal = "Physical Review B - Condensed Matter and Materials Physics",

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T1 - Optical detection of single-electron spin decoherence in a quantum dot

AU - Gywat, Oliver

AU - Engel, Hans Andreas

AU - Loss, Daniel

AU - Epstein, R. J.

AU - Mendoza, F. M.

AU - Awschalom, D. D.

PY - 2004/5

Y1 - 2004/5

N2 - We propose a method based on optically detected magnetic resonance (ODMR) to measure the decoherence time T2 of a single electron spin in a semiconductor quantum dot. The electron spin resonance (ESR) of a single excess electron on a quantum dot is probed by circularly polarized laser excitation. Due to Pauli blocking, optical excitation is only possible for one of the electron-spin states. The photoluminescence is modulated due to the ESR which enables the measurement of electron-spin decoherence. We study different possible schemes for such an ODMR setup.

AB - We propose a method based on optically detected magnetic resonance (ODMR) to measure the decoherence time T2 of a single electron spin in a semiconductor quantum dot. The electron spin resonance (ESR) of a single excess electron on a quantum dot is probed by circularly polarized laser excitation. Due to Pauli blocking, optical excitation is only possible for one of the electron-spin states. The photoluminescence is modulated due to the ESR which enables the measurement of electron-spin decoherence. We study different possible schemes for such an ODMR setup.

UR - https://www.scopus.com/pages/publications/42749103914

U2 - 10.1103/PhysRevB.69.205303

DO - 10.1103/PhysRevB.69.205303

M3 - Article

AN - SCOPUS:42749103914

SN - 1098-0121

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SP - 205303-1-205303-5

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 20

M1 - 205303

ER -

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

Abstract

ASJC Scopus subject areas

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