Coherent control of multipartite entanglement

Seyed Mohammad Hashemi Rafsanjani and Joseph H. Eberly
Phys. Rev. A 91, 012313 – Published 12 January 2015

Abstract

Quantum entanglement between an arbitrary number of remote qubits is examined analytically. We show that there is a nonprobabilistic way to address in one context the management of entanglement of an arbitrary number of mixed-state qubits by engaging quantitative measures of entanglement and a specific external control mechanism. Both all-party entanglement and weak inseparability are considered. We show that for N4, the death of all-party entanglement is permanent after an initial collapse. In contrast, weak inseparability can be deterministically managed for an arbitrarily large number of qubits almost indefinitely. Our result suggests a picture of the path that the system traverses in the Hilbert space.

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  • Received 4 August 2014

DOI:https://doi.org/10.1103/PhysRevA.91.012313

©2015 American Physical Society

Authors & Affiliations

Seyed Mohammad Hashemi Rafsanjani* and Joseph H. Eberly

  • Center for Coherence and Quantum Optics and the Department of Physics & Astronomy, University of Rochester, Rochester, New York 14627, USA

  • *hashemi@pas.rochester.edu

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Issue

Vol. 91, Iss. 1 — January 2015

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