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Title: Reexamination of measurement-induced chaos in entanglement-purification protocols
Authors: Guan, Y.
Nguyen, D.Q.
Xu, J.
Gong, J. 
Issue Date: 20-May-2013
Citation: Guan, Y., Nguyen, D.Q., Xu, J., Gong, J. (2013-05-20). Reexamination of measurement-induced chaos in entanglement-purification protocols. Physical Review A - Atomic, Molecular, and Optical Physics 87 (5) : -. ScholarBank@NUS Repository.
Abstract: Entanglement-purification protocols, developed for the sake of high-fidelity communication through noisy quantum channels, are highly nonlinear quantum operations and can offer a very useful context to studies of nonlinear complex maps. Recently it was demonstrated that the feedback mechanism used in a typical purification protocol can cause the evolution dynamics of qubits to exhibit chaos. In this work we extend the investigation by considering the natural time evolution of qubits during a purification process, leading to a number of interesting findings that reflect the competition between the natural unitary evolution of qubits and nonlinear purification operations. As a result, the overall evolution dynamics of entanglement can be much richer. Possible applications are also proposed. © 2013 American Physical Society.
Source Title: Physical Review A - Atomic, Molecular, and Optical Physics
ISSN: 10502947
DOI: 10.1103/PhysRevA.87.052316
Appears in Collections:Staff Publications

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