Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots

A. Greilich; R. Oulton; E. A. Zhukov; I. A. Yugova; D. R. Yakovlev; M. Bayer; A. Shabaev; Al. L. Efros; I. A. Merkulov; V. Stavarache; D. Reuter; A. Wieck

doi:10.1103/PhysRevLett.96.227401

Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots

A. Greilich, R. Oulton, E. A. Zhukov, I. A. Yugova, D. R. Yakovlev, M. Bayer, A. Shabaev, Al. L. Efros, I. A. Merkulov, V. Stavarache, D. Reuter, A. Wieck

Research output: Contribution to journal › Article (Academic Journal) › peer-review

206 Citations (Scopus)

Abstract

Electron spin coherence has been generated optically in n-type modulation doped (In,Ga)As/GaAs quantum dots (QDs) which contain on average a single electron per dot. The coherence arises from resonant excitation of the QDs by circularly polarized laser pulses, creating a coherent superposition of an electron and a trion. Time dependent Faraday rotation is used to probe the spin precession of the optically oriented electrons about a transverse magnetic field. The coherence generation can be controlled by pulse intensity, being most efficient for (2n+1)pi pulses.

Original language	English
Article number	227401
Pages (from-to)	-
Number of pages	4
Journal	Physical Review Letters
Volume	96
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.96.227401
Publication status	Published - 9 Jun 2006

Research Groups and Themes

Photonics and Quantum

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@article{cd52804a9d294c4ab1a89e055f10e85a,

title = "Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots",

abstract = "Electron spin coherence has been generated optically in n-type modulation doped (In,Ga)As/GaAs quantum dots (QDs) which contain on average a single electron per dot. The coherence arises from resonant excitation of the QDs by circularly polarized laser pulses, creating a coherent superposition of an electron and a trion. Time dependent Faraday rotation is used to probe the spin precession of the optically oriented electrons about a transverse magnetic field. The coherence generation can be controlled by pulse intensity, being most efficient for (2n+1)pi pulses.",

author = "A. Greilich and R. Oulton and Zhukov, \{E. A.\} and Yugova, \{I. A.\} and Yakovlev, \{D. R.\} and M. Bayer and A. Shabaev and Efros, \{Al. L.\} and Merkulov, \{I. A.\} and V. Stavarache and D. Reuter and A. Wieck",

year = "2006",

month = jun,

day = "9",

doi = "10.1103/PhysRevLett.96.227401",

language = "English",

volume = "96",

pages = "--",

journal = "Physical Review Letters",

issn = "0031-9007",

publisher = "American Physical Society (APS)",

number = "22",

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TY - JOUR

T1 - Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots

AU - Greilich, A.

AU - Oulton, R.

AU - Zhukov, E. A.

AU - Yugova, I. A.

AU - Yakovlev, D. R.

AU - Bayer, M.

AU - Shabaev, A.

AU - Efros, Al. L.

AU - Merkulov, I. A.

AU - Stavarache, V.

AU - Reuter, D.

AU - Wieck, A.

PY - 2006/6/9

Y1 - 2006/6/9

N2 - Electron spin coherence has been generated optically in n-type modulation doped (In,Ga)As/GaAs quantum dots (QDs) which contain on average a single electron per dot. The coherence arises from resonant excitation of the QDs by circularly polarized laser pulses, creating a coherent superposition of an electron and a trion. Time dependent Faraday rotation is used to probe the spin precession of the optically oriented electrons about a transverse magnetic field. The coherence generation can be controlled by pulse intensity, being most efficient for (2n+1)pi pulses.

AB - Electron spin coherence has been generated optically in n-type modulation doped (In,Ga)As/GaAs quantum dots (QDs) which contain on average a single electron per dot. The coherence arises from resonant excitation of the QDs by circularly polarized laser pulses, creating a coherent superposition of an electron and a trion. Time dependent Faraday rotation is used to probe the spin precession of the optically oriented electrons about a transverse magnetic field. The coherence generation can be controlled by pulse intensity, being most efficient for (2n+1)pi pulses.

U2 - 10.1103/PhysRevLett.96.227401

DO - 10.1103/PhysRevLett.96.227401

M3 - Article (Academic Journal)

SN - 0031-9007

VL - 96

SP - -

JO - Physical Review Letters

JF - Physical Review Letters

IS - 22

M1 - 227401

ER -

Optical control of spin coherence in singly charged (In,Ga)As/GaAs quantum dots

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