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Quantum condensed and quantum coherent systems

English title Quantum condensed and quantum coherent systems
Applicant Blatter Johann W.
Number 116639
Funding scheme Project funding (Div. I-III)
Research institution Institut für Theoretische Physik ETH Zürich
Institution of higher education ETH Zurich - ETHZ
Main discipline Theoretical Physics
Start/End 01.05.2007 - 30.04.2009
Approved amount 330'525.00
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Keywords (11)

cold atom physics; vortex matter; disordered systems; mesoscopic physics; quantum computing; Superconductors; superfluids; cold atomic gases; classical and quantum phase transitions; mesoscopic systems; entanglement

Lay Summary (English)

Lead
Lay summary
We carry out theoretical studies on various types of solid state systems: on the one hand, these are quantum coherent systems such as superconducting metals (high Tc cuprates), superfluid bosonic gases (Bose Einstein condensates), Josephson junction arrays, or degenerate Fermi systems. We are interested in novel phases and (quantum) phase transitions, where these materials undergo a drastic change in behavior, e.g. ordered versus disordered or mobile versus immobile phases. Furthermore, we study topological excitations such as vortices and systems of vortices; these define an interesting soft-matter system with similarities to polymer physics. These studies are useful in the context of applications of novel materials, e.g., superconducting transport, or serve as a preparation for the future development of quantum information systems. Our second field of interest is mesoscopic physics. Here we study theoretically the transport properties (average current, noise, etc.) in small mesoscopic devices (normal-metallic and/or superconducting) and study basic quantum phenomena such as entanglement, with the goal to understand their potential as devices for quantum information processing.
Direct link to Lay Summary Last update: 21.02.2013

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Associated projects

Number Title Start Funding scheme
107551 Quantum condensed and quantum coherent systems 01.05.2005 Project funding (Div. I-III)
124456 Cold atomic-, mesoscopic-, and vortex physics 01.05.2009 Project funding (Div. I-III)
124456 Cold atomic-, mesoscopic-, and vortex physics 01.05.2009 Project funding (Div. I-III)

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