| EPSRC Reference: |
GR/R95432/01 |
| Title: |
Decoherence and Dephasing in Quantum Dots and Wires |
| Principal Investigator: |
Lerner, Professor I |
| Other Investigators: |
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| Project Partners: |
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| Department: |
School of Physics and Astronomy |
| Organisation: |
University of Birmingham |
| Scheme: |
Standard Research (Pre-FEC) |
| Starts: |
01 April 2003 |
Ends: |
30 September 2006 |
Value (£): |
174,875
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Summary on Grant Application Form |
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The purpose of this proposal is to investigate low-temperature decoherence and dephasing processes in quantum dots and wires. The main decoherence source in many-electron devices is the interplay of electron-electron correlations and quantum interference of phase-coherent electrons scattered by disorder and/or boundaries. A large number of recent experiments on dephasing in quantum wires and dots showed a considerable lack of understanding of fundamentals of relaxation processes in such devices at very low temperatures. We suggest analyzing the role of mesoscopic fluctuations and of strong deviations from equilibrium in relaxation processes due to electron-electron interactions in many-electron dots. We also propose to consider alternative mechanisms for decoherence (two-level systems, phonon emission etc) both in quantum wires and single-electron dots where the observed effects cannot be entirely ascribed to the e-e interactions. As entangled multi-dots devices are believed to be among the most perspective devices alternative realizations for a possible quantum computer, we intend to estimate possible restriction imposed by the dephasing processes due to interactions.
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Key Findings |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Potential use in non-academic contexts |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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Impacts |
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| Description |
This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk |
| Summary |
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| Date Materialised |
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Sectors submitted by the Researcher |
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This information can now be found on Gateway to Research (GtR) http://gtr.rcuk.ac.uk
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| Project URL: |
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| Further Information: |
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| Organisation Website: |
http://www.bham.ac.uk |