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Iterative Entanglement Distillation: Approaching full Elimination of Decoherence

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons40457

Hage,  Boris
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons1446

Samblowski,  Aiko
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons40442

DiGuglielmo,  James
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons40490

Schnabel,  Roman
Laser Interferometry & Gravitational Wave Astronomy, AEI-Hannover, MPI for Gravitational Physics, Max Planck Society;

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Volltexte (frei zugänglich)

1007.1508
(Preprint), 856KB

PRL230502.pdf
(beliebiger Volltext), 333KB

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Zitation

Hage, B., Samblowski, A., DiGuglielmo, J., Fiurasek, J., & Schnabel, R. (2010). Iterative Entanglement Distillation: Approaching full Elimination of Decoherence. Physical Review Letters, 105(23): 230502. doi:10.1103/PhysRevLett.105.230502.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-000F-3B56-F
Zusammenfassung
The distribution and processing of quantum entanglement form the basis of quantum communication and quantum computing. The realization of the two is difficult because quantum information inherently has a high susceptibility to decoherence, i.e. to uncontrollable information loss to the environment. For entanglement distribution, a proposed solution to this problem is capable of fully eliminating decoherence; namely iterative entanglement distillation. This approach builds on a large number of distillation steps each of which extracts a number of weakly decohered entangled states from a larger number of strongly decohered states. Here, for the first time, we experimentally demonstrate iterative distillation of entanglement. Already distilled entangled states were further improved in a second distillation step and also made available for subsequent steps.Our experiment displays the realization of the building blocks required for an entanglement distillation scheme that can fully eliminate decoherence.