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Quantum coherence, quantum statistics, and superconductivity in mesoscopic systems

English title Quantum coherence, quantum statistics, and superconductivity in mesoscopic systems
Applicant Bruder Christoph
Number 117603
Funding scheme Project funding (Div. I-III)
Research institution Departement Physik Universität Basel
Institution of higher education University of Basel - BS
Main discipline Theoretical Physics
Start/End 01.10.2007 - 30.09.2009
Approved amount 276'576.00
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Keywords (7)

Condensed-matter theory; quantum coherence; noise and full counting statistics; correlations and entanglement; in ultracold atomic systems; nanomechanics; mesoscopic superconductivity

Lay Summary (English)

Lead
Lay summary
The physics of mesoscopic systems, i.e., electronic structures in the nanometer range, is one of the most active research areas of condensed-matter physics. These systems allow us to study fundamental physics questions, and their understanding is a necessary prerequisite for possible future electronic device applications. The goal of our research is to exploit and analyze quantum interference effects in such electronic circuits. In the last couple of years, new exciting areas have opened up, like nanomechanics, or the interface of ultracold atoms and condensed-matter systems.

In particular, our group (about 3 PhD students and 3 Postdocs) plans to study the interplay of electric currents through nanostructures with mechanical degrees of freedom (nanomechanics). We are also interested in fluctuation and noise phenomena: electrical currents are not exactly constant but fluctuate, and these fluctuations contain a great deal of information about the quantum nature of the electrons that carry the current. We will also investigate ultracold atoms which can be used to study quantum coherence and quantum many-body phenomena. Cold atoms can be trapped in so-called optical lattices and show similarities to electrons in a crystal lattice. The great advantage of cold atoms is that the properties of the lattice can be controlled much more easily than in the case of a crystal lattice. Finally, we are also interested in the foundations of quantum mechanics (entanglement, weak measurements in solid-state systems).
Direct link to Lay Summary Last update: 21.02.2013

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Associated projects

Number Title Start Funding scheme
126637 Quantum coherence, quantum statistics, and superconductivity in mesoscopic systems 01.10.2009 Project funding (Div. I-III)
109282 Quantum coherence, quantum statistics, and superconductivity in mesoscopic systems 01.10.2005 Project funding (Div. I-III)

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