Berlin 2014 – wissenschaftliches Programm

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Q: Fachverband Quantenoptik und Photonik

Q 51: Quantum information: Photons and nonclassical light III

Q 51.4: Vortrag

Donnerstag, 20. März 2014, 17:15–17:30, UDL HS3038

Distribution of squeezed states of light through optical fibers — •Jan Gniesmer, Vitus Händchen, Tobias Eberle, and Roman Schnabel — Albert-Einstein-Institut, Institut für Gravitationsphysik, Leibniz Universität Hannover

Entanglement-based continuous-variable (CV) quantum key distribution networks rely on the efficient distribution and detection of quadrature entangled states. The distribution itself can be realized by coupling light at 1550nm to standard optical fibers. This talk presents our recent results on table-top squeezed-light distribution over a 1km fiber. The experiment has been realized with a stand-alone receiver involving a balanced homodyne detector and a polarisation control scheme. The talk also gives an outlook to the applications of these results to CV quantum key distribution.