Published July 15, 2001
| Version v1
Journal article
Adiabatic steering and determination of dephasing rates in double-dot qubits
Creators
- 1. Department of Physics, University of Manchester Institute of Science and Technology (UMIST), P.O. Box 88, Manchester M60 1QD (United Kingdom)
- 2. Laboratoire Kastler-Brossel, Departement de Physique de l'Ecole Normale Superieure, 24 rue Lhomond, 75231 Paris Cedex 05 (France)
- 3. Center for NanoScience and Sektion Physik, Ludwig-Maximiliam-Universitaet, Geschwister-Scholl-Platz 1, 80539 Munich (Germany)
Description
We propose a scheme to prepare arbitrary superpositions of quantum states in double quantum dots irradiated by coherent microwave pulses. Solving the equations of motion for the dot-density matrix, we find that dephasing rates for such superpositions can be quantitatively inferred from additional electron-current pulses that appear due to a controllable breakdown of coherent population trapping in the dots
Additional details
Identifiers
- DOI
- 10.1103/PhysRevB.64.035319;
- arXiv
- arXiv:cond-mat/0104435v1;
Publishing Information
- Journal Title
- Physical Review. B, Condensed Matter and Materials Physics
- Journal Volume
- 64
- Journal Issue
- 3
- Journal Page Range
- p. 035319-035319.5
- ISSN
- 1098-0121
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 35094044
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; S74: ATOMIC AND MOLECULAR PHYSICS;
- Descriptors DEI
- DENSITY MATRIX; ELECTRONS; EQUATIONS OF MOTION; MICROWAVE RADIATION; PULSED IRRADIATION; QUANTUM DOTS; QUANTUM MECHANICS; SEMICONDUCTOR MATERIALS; TRAPPING
- Descriptors DEC
- DIFFERENTIAL EQUATIONS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; EQUATIONS; FERMIONS; IRRADIATION; LEPTONS; MATERIALS; MATRICES; MECHANICS; NANOSTRUCTURES; PARTIAL DIFFERENTIAL EQUATIONS; RADIATIONS
Optional Information
- Notes
- (c) 2001 The American Physical Society