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Knoll, L.T.; Schmiegelow, C.T.; Farías, O.J.; Walborn, S.P.; Larotonda, M.A. "Entanglement-breaking channels and entanglement sudden death" (2016) Physical Review A. 94(1)
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Abstract:

The occurrence of entanglement sudden death in the evolution of a bipartite system depends on both the initial state and the channel responsible for the evolution. An extreme case is that of entanglement-breaking channels, which are channels that, acting on only one of the subsystems, drives them to full disentanglement, regardless of the initial state. In general, one can find certain combinations of initial states and channels acting on one or both subsystems that can result in entanglement sudden death or not. Neither the channel nor the initial state are responsible for this effect but their combination. In this paper we show that, for two entangled qubits, when entanglement sudden death occurs, the evolution can be mapped to that of an effective entanglement-breaking channel on a modified initial state. Our results allow to anticipate which states will suffer entanglement sudden death or not for a given evolution. An experiment with polarization-entangled photons demonstrates the utility of this result in a variety of cases. © 2016 American Physical Society.

Registro:

Documento: Artículo
Título:Entanglement-breaking channels and entanglement sudden death
Autor:Knoll, L.T.; Schmiegelow, C.T.; Farías, O.J.; Walborn, S.P.; Larotonda, M.A.
Filiación:DEILAP, CITEDEF, CONICET, J.B. de La Salle 4397, Villa Martelli, Buenos Aires, 1603, Argentina
Departamento de Física, FCEyN, UBA, IFIBA, Conicet, Pabellón 1, Ciudad Universitaria, Buenos Aires, 1428, Argentina
ICFO-Institut de Ciencies Fotoniques, Barcelona Institute of Science and Technology, Castelldefels (Barcelona), 08860, Spain
Centro Brasileiro de Pesquisas Físicas, Rua Doutor Xavier Sigaud 150, Rio de Janeiro, Rio de Janeiro, 22290-180, Brazil
Instituto de Física, Universidade Federal Do Rio de Janeiro, Caixa Postal 68528, Rio de Janeiro, Rio de Janeiro, 21941-972, Brazil
Palabras clave:Mathematical models; Physics; Bipartite systems; Entangled qubits; Entanglement sudden death; Initial state; Polarization-entangled photons; Quantum entanglement
Año:2016
Volumen:94
Número:1
DOI: http://dx.doi.org/10.1103/PhysRevA.94.012345
Título revista:Physical Review A
Título revista abreviado:Phys. Rev. A
ISSN:24699926
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v94_n1_p_Knoll

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Citas:

---------- APA ----------
Knoll, L.T., Schmiegelow, C.T., Farías, O.J., Walborn, S.P. & Larotonda, M.A. (2016) . Entanglement-breaking channels and entanglement sudden death. Physical Review A, 94(1).
http://dx.doi.org/10.1103/PhysRevA.94.012345
---------- CHICAGO ----------
Knoll, L.T., Schmiegelow, C.T., Farías, O.J., Walborn, S.P., Larotonda, M.A. "Entanglement-breaking channels and entanglement sudden death" . Physical Review A 94, no. 1 (2016).
http://dx.doi.org/10.1103/PhysRevA.94.012345
---------- MLA ----------
Knoll, L.T., Schmiegelow, C.T., Farías, O.J., Walborn, S.P., Larotonda, M.A. "Entanglement-breaking channels and entanglement sudden death" . Physical Review A, vol. 94, no. 1, 2016.
http://dx.doi.org/10.1103/PhysRevA.94.012345
---------- VANCOUVER ----------
Knoll, L.T., Schmiegelow, C.T., Farías, O.J., Walborn, S.P., Larotonda, M.A. Entanglement-breaking channels and entanglement sudden death. Phys. Rev. A. 2016;94(1).
http://dx.doi.org/10.1103/PhysRevA.94.012345