Witnessing effective entanglement over 2km of optical fiber

Wittmann, Christoffer; Fuerst, Josef; Wiechers, Carlos; Elser, Dominique; Haeseler, Hauke; Luetkenhaus, Norbert; Leuchs, Gerd

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Witnessing effective entanglement over 2km of optical fiber

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Wittmann, Christoffer
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Fuerst, Josef
International Max Planck Research School, Max Planck Institute for the Science of Light, Max Planck Society;
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Elser, Dominique
Quantum Information Processing, Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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Luetkenhaus, Norbert
Max Planck Research Group, Max Planck Institute for the Science of Light, Max Planck Society;

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Leuchs, Gerd
Leuchs Division, Max Planck Institute for the Science of Light, Max Planck Society;

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引用

Wittmann, C., Fuerst, J., Wiechers, C., Elser, D., Haeseler, H., Luetkenhaus, N., & Leuchs, G. (2010). Witnessing effective entanglement over 2km of optical fiber. In 2010 CONFERENCE ON LASERS AND ELECTRO-OPTICS (CLEO) AND QUANTUM ELECTRONICS AND LASER SCIENCE CONFERENCE (QELS). 345 E 47TH ST, NEW YORK, NY 10017 USA: IEEE.

引用: https://hdl.handle.net/11858/00-001M-0000-002D-6B5D-0

要旨

We present a continuous-variable QKD system using heterodyne detection. We experimentally determine channel characteristics and compare them to bounds of our entanglement criterion. For the first time, the local oscillator is considered in this verification. (C) 2010 Optical Society of America