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TT: Tiefe Temperaturen

TT 13: Transport - Quantum Coherence and Quantum Information Systems

TT 13.3: Talk

Saturday, March 5, 2005, 09:15–09:30, TU H3027

Perfect state transfer through dispersive quantum chains — •Daniel Burgarth and Sougato Bose — Department of Physics & Astronomy, University College London, UK

Quantum chains are very promising for the transfer of quantum states along short distances. However, in many cases the transfer is strongly dispersive and its fidelity is in general very small. I will present a simple and experimentally feasible scheme that can achieve perfect state transfer even in the presence of dispersion. It is applicable to a large variety of systems, including Heisenberg spin chains. Furthermore, it has a built-in stability to imperfections, decoherence and dissipation.