Details
| Original language | English |
|---|---|
| Pages (from-to) | 73-78 |
| Number of pages | 6 |
| Journal | Solid State Communications |
| Volume | 120 |
| Issue number | 2-3 |
| Publication status | Published - 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.
Keywords
- A. quantum wells, A. semiconductors, D. spin dynamics, E. time-resolved optical spectroscopy
ASJC Scopus subject areas
- Chemistry(all)
- Physics and Astronomy(all)
- Condensed Matter Physics
- Materials Science(all)
- Materials Chemistry
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In: Solid State Communications, Vol. 120, No. 2-3, 04.09.2001, p. 73-78.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Coherent dynamics of coupled electron and hole spins in semiconductors
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
UR - http://www.scopus.com/inward/record.url?scp=0035955237&partnerID=8YFLogxK
U2 - 10.1016/S0038-1098(01)00346-5
DO - 10.1016/S0038-1098(01)00346-5
M3 - Article
AN - SCOPUS:0035955237
VL - 120
SP - 73
EP - 78
JO - Solid State Communications
JF - Solid State Communications
SN - 0038-1098
IS - 2-3
ER -