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  Towards Einstein-Podolsky-Rosen quantum channel multiplexing

Hage, B., Samblowski, A., & Schnabel, R. (2010). Towards Einstein-Podolsky-Rosen quantum channel multiplexing. Physical Review. A, 81: 062301. doi:10.1103/PhysRevA.81.062301.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-BC88-5 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0012-BC8A-1
Genre: Journal Article

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0710.3086 (Preprint), 331KB
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 Creators:
Hage, Boris1, Author              
Samblowski, Aiko1, Author              
Schnabel, Roman1, Author              
Affiliations:
1Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society, ou_24010              

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Free keywords: Quantum Physics
 Abstract: A single broadband squeezed field constitutes a quantum communication resource that is sufficient for the realization of a large number N of quantum channels based on distributed Einstein-Podolsky-Rosen (EPR) entangled states. Each channel can serve as a resource for, e.g. independent quantum key distribution or teleportation protocols. N-fold channel multiplexing can be realized by accessing 2N squeezed modes at different Fourier frequencies. We report on the experimental implementation of the N=1 case through the interference of two squeezed states, extracted from a single broadband squeezed field, and demonstrate all techniques required for multiplexing (N>1). Quantum channel frequency multiplexing can be used to optimize the exploitation of a broadband squeezed field in a quantum information task. For instance, it is useful if the bandwidth of the squeezed field is larger than the bandwidth of the homodyne detectors. This is currently a typical situation in many experiments with squeezed and two-mode squeezed entangled light.

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 Dates: 2007-10-162009-12-1420102010
 Publication Status: Published in print
 Pages: 4 pages
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 0710.3086
DOI: 10.1103/PhysRevA.81.062301
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Title: Physical Review. A
  Alternative Title : Phys. Rev. A
Source Genre: Journal
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Publ. Info: New York, NY : Published by the American Physical Society through the American Institute of Physics
Pages: - Volume / Issue: 81 Sequence Number: 062301 Start / End Page: - Identifier: Other: 954925225012
Other: 1050-2947