Dresden 2011 – wissenschaftliches Programm
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Q: Fachverband Quantenoptik und Photonik
Q 50: Quantum Effects: Entanglement and Decoherence
Q 50.4: Vortrag
Donnerstag, 17. März 2011, 11:15–11:30, SCH A01
Unconditional Preparation of Bound Entanglement — •Aiko Samblowski1, James DiGuglielmo1, Boris Hage1, Carlos Pineda2,3, Jens Eisert3,4, and Roman Schnabel1 — 1Institut für Gravitationsphysik, Leibniz Universität Hannover und Max-Planck Institut für Gravitationsphysik (Albert-Einstein-Institut), 30167 Hannover, Germany — 2Instituto de Física, Universidad Nacional Autónoma de México, México — 3Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany — 4Institute for Advanced Study Berlin, 14193 Berlin, Germany
Among the possibly most fascinating aspects of quantum entanglement is that it comes in "free" and "bound" instances. In contrast to free entanglement it is not possible to distill bound entangled states.Their existence hence certifies an intrinsic irreversibility of entanglement in nature and suggests a connection with thermodynamics.
A first experimental unconditional preparation and detection of a bound entangled state of light [1] will be presented in this talk. The focus will be set on the realization and results of our experiment that continuously produced a continuous-variable (CV) bound entangled state with an extraordinary significance of more than ten standard deviations away from both separability and distillability. This platform allows the efficient preparation of multi-mode entangled states of light with various applications in quantum information, quantum state engineering and metrology.
[1] J. DiGuglielmo, A. Samblowski, B. Hage, C. Pineda, J. Eisert and R. Schnabel, arXiv:1006.4651 (2010)