DocumentCode :
2230949
Title :
Possible definition of quantum bits in coupled quantum dots
Author :
Blick, Robert H. ; Lorenz, Heribert
Author_Institution :
Sektion Phys., Ludwig-Maximilians-Univ., Munchen, Germany
Volume :
2
fYear :
2000
fDate :
2000
Firstpage :
245
Abstract :
In this work we investigate laterally defined quantum dots confined in AlGaAs/GaAs heterostructures comprising a two-dimensional electron gas with extremely high mobility and large phase relaxation length. Our goal is to study the intricate mechanisms of wave function interaction in these artificial molecules. We probe the wave function entanglement of two coupled quantum dots by applying transport spectroscopy at ultra low temperatures. We determine the strength of this tunnel coupled mode and monitor the magnetic field dependence. This mode is the key element for any quantum computational realization with semiconductor quantum dots
Keywords :
III-V semiconductors; aluminium compounds; gallium arsenide; quantum computing; semiconductor quantum dots; single electron transistors; two-dimensional electron gas; AlGaAs-GaAs; coupled quantum dots; laterally defined quantum dots; magnetic field dependence; mobility; phase relaxation length; quantum bits; quantum computational realization; transport spectroscopy; tunnel coupled mode; two-dimensional electron gas; wave function entanglement; wave function interaction; Electron mobility; Gallium arsenide; Potential well; Probes; Quantum computing; Quantum dots; Quantum entanglement; Spectroscopy; Temperature; Wave functions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 2000. Proceedings. ISCAS 2000 Geneva. The 2000 IEEE International Symposium on
Conference_Location :
Geneva
Print_ISBN :
0-7803-5482-6
Type :
conf
DOI :
10.1109/ISCAS.2000.856307
Filename :
856307
Link To Document :
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