Experimental entanglement distillation of mesoscopic quantum states

Dong R, Lassen M, Heersink J, Marquardt C, Filip R, Leuchs G, Andersen LU (2008)

Publication Type: Journal article

Publication year: 2008

Journal

Nature Physics Nature Publishing Group

Publisher: Nature Publishing Group

Book Volume: 11

Pages Range: 919-923

DOI: 10.1038/nphys1112

Abstract

The distribution of entangled states between distant parties in an optical network is crucial for the successful implementation of various quantum communication protocols such as quantum cryptography, teleportation and dense coding. However, owing to the unavoidable loss in any real optical channel, the distribution of loss-intolerant entangled states is inevitably afflicted by decoherence, which causes a degradation of the transmitted entanglement. To combat the decoherence, entanglement distillation, a process of extracting a small set of highly entangled states from a large set of less entangled states, can be used. Here we report on the distillation of deterministically prepared light pulses entangled in continuous variables that have undergone non-Gaussian noise. The entangled light pulses are sent through a lossy channel, where the transmission is varying in time similarly to light propagation in the atmosphere. By using linear optical components and global classical communication, the entanglement is probabilisticallyincreased. © 2008 Macmillan Publishers Limited. All rights reserved.

Authors with CRIS profile

Christoph Marquardt Lehrstuhl für Experimentalphysik (Optik) Gerhard Leuchs Lehrstuhl für Experimentalphysik (Optik)

Involved external institutions

Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE) Palacky University Olomouc / Univerzita Palackého v Olomouci CZ Czech Republic (CZ)

How to cite

APA:

Dong, R., Lassen, M., Heersink, J., Marquardt, C., Filip, R., Leuchs, G., & Andersen, L.U. (2008). Experimental entanglement distillation of mesoscopic quantum states. Nature Physics, 11, 919-923. https://doi.org/10.1038/nphys1112

MLA:

Dong, Ruifang, et al. "Experimental entanglement distillation of mesoscopic quantum states." Nature Physics 11 (2008): 919-923.

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