A dissipative scheme to approach the boundary of two-qubit entangled mixed states

Details A dissipative scheme to approach the boundary of two-qubit entangled mixed states A dissipative scheme to approach the boundary of two-qubit entangled mixed states

2008-12-19

arxiv.org/abs/0812.3808v2

Phys. Rev. A 79,032314 (2009)

Physics

Quantum Physics

9 pages, 7 figures, RevTeX4, Accepted for publication by Physics Review A

Scientific paper

10.1103/PhysRevA.79.032314

We discuss the generation of states close to the boundary-family of maximally entangled mixed states as defined by the use of concurrence and linear entropy. The coupling of two qubits to a dissipation-affected bosonic mode is able to produce a bipartite state having, for all practical purposes, the entanglement and purity properties of one of such boundary states. We thoroughly study the effects that thermal and squeezed character of the bosonic mode have in such a process and we discuss tolerance to qubit phase-damping mechanisms. The non-demanding nature of the scheme makes it realizable in a matter-light based physical set-up, which we address in some details.

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