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Title: Robustness of non-gaussian entanglement against noisy amplifier and attenuator environments
Authors: Sabapathy, Krishna Kumar
Ivan, Solomon J.
Simon, R.
Keywords: Entanglement production
characterization and manipulation
open systems
quantum statistical methods
Nonclassical states of the electromagnetic field
Issue Date: Sep-2011
Publisher: The Americal Physical Society
Citation: Physical Review Letters, 2011. V, 107, p130501-1
Abstract: The recently developed Kraus representation for bosonic Gaussian channels is employed to study analytically the robustness of non-Gaussian entanglement against evolution under noisy attenuator and amplifier environments, and compare it with the robustness of Gaussian entanglement. Our results show that some non-Gaussian states with one ebit of entanglement are more robust than all Gaussian states, even the ones with arbitrarily large entanglement, a conclusion of direct consequence to the recent conjecture by Allegra et al. [Phys. Rev. Lett. 105, 100503 (2010)PRLTAO0031-900710.1103/PhysRevLett.105.100503].
Description: Open access
ISSN: 0031-9007
1079-7114 (Online)
Alternative Location: 10.1103/PhysRevLett.107.130501
Copyright: 2011 American Physical Society
Appears in Collections:Research Papers (TP)

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