Coherent dynamics of coupled electron and hole spins in semiconductors

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OriginalspracheEnglisch
Seiten (von - bis)73-78
Seitenumfang6
FachzeitschriftSolid State Communications
Jahrgang120
Ausgabenummer2-3
PublikationsstatusVeröffentlicht - 4 Sept. 2001

Abstract

We observe the coherent dynamics of coupled electron and hole spins within 2D-excitons. The dynamics are induced by the exchange interaction of electron and hole and by an external magnetic field tilted from the plane of a 3 nm GaAs/(AlGa)As quantum well. The observed quantum beats are well described by a Schrödinger equation for the pair of spins in a magnetic field which is solved analytically. The results lead to a controlled not (CNOT) gate, a key element in quantum computation, realized with semiconductor nanostructures.

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Coherent dynamics of coupled electron and hole spins in semiconductors. / Hägele, Daniel; Hübner, Jens; Rühle, W. W. et al.
in: Solid State Communications, Jahrgang 120, Nr. 2-3, 04.09.2001, S. 73-78.

Publikation: Beitrag in FachzeitschriftArtikelForschungPeer-Review

Hägele D, Hübner J, Rühle WW, Oestreich M. Coherent dynamics of coupled electron and hole spins in semiconductors. Solid State Communications. 2001 Sep 4;120(2-3):73-78. doi: 10.1016/S0038-1098(01)00346-5
Hägele, Daniel ; Hübner, Jens ; Rühle, W. W. et al. / Coherent dynamics of coupled electron and hole spins in semiconductors. in: Solid State Communications. 2001 ; Jahrgang 120, Nr. 2-3. S. 73-78.
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AU - Hägele, Daniel

AU - Hübner, Jens

AU - Rühle, W. W.

AU - Oestreich, Michael

N1 - Funding information: We acknowledge helpful discussions with D.S. Chemla and H. Neumann and financial support from the Deutsche Forschungsgemeinschaft and the Bundesministerium für Forschung, Bildung, Wissenschaft und Technologie.

PY - 2001/9/4

Y1 - 2001/9/4

N2 - We observe the coherent dynamics of coupled electron and hole spins within 2D-excitons. The dynamics are induced by the exchange interaction of electron and hole and by an external magnetic field tilted from the plane of a 3 nm GaAs/(AlGa)As quantum well. The observed quantum beats are well described by a Schrödinger equation for the pair of spins in a magnetic field which is solved analytically. The results lead to a controlled not (CNOT) gate, a key element in quantum computation, realized with semiconductor nanostructures.

AB - We observe the coherent dynamics of coupled electron and hole spins within 2D-excitons. The dynamics are induced by the exchange interaction of electron and hole and by an external magnetic field tilted from the plane of a 3 nm GaAs/(AlGa)As quantum well. The observed quantum beats are well described by a Schrödinger equation for the pair of spins in a magnetic field which is solved analytically. The results lead to a controlled not (CNOT) gate, a key element in quantum computation, realized with semiconductor nanostructures.

KW - A. quantum wells

KW - A. semiconductors

KW - D. spin dynamics

KW - E. time-resolved optical spectroscopy

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VL - 120

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EP - 78

JO - Solid State Communications

JF - Solid State Communications

SN - 0038-1098

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