Stuttgart 2012 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 15: Quanteneffekte: Verschränkung und Dekohärenz 1
Q 15.6: Talk
Monday, March 12, 2012, 17:45–18:00, V7.01
Quantum transport efficiency and Fourier's law — •Markus Tiersch1,2, Daniel Manzano1,2,3, Ali Asadian1, and Hans J. Briegel1,2 — 1Institut für Theoretische Physik, Universität Innsbruck, Österreich — 2Institut für Quantenoptik und Quanteninformation, Österreichische Akademie der Wissenschaften, Innsbruck, Österreich — 3Instituto Carlos I de Fisica Teorica y Computacional, University of Granada, Spain
Transport properties of quantum systems are of primary interest in many field of physics. Recent examples include the exciton transport through bio-molecular systems of photosynthetic organisms. By means of paradigmatic model systems of quantum optics and solid state physics, namely networks of coupled two-level systems, we analyze the steady-state energy transfer in a non-equilibrium scenario created by two thermal reservoirs. We study how the energy current depends on the system size, and discuss the validity of Fourier's law of heat conduction for, both, diffusive and ballistic transport regimes, and in presence and absence of disorder. We discuss the implications of these results on energy transfer in biological light harvesting systems, and outline the role of quantum coherences and entanglement in these scenarios.