Non-Markovianity assisted Steady State Entanglement

Details Non-Markovianity assisted Steady State Entanglement Non-Markovianity assisted Steady State Entanglement

2011-06-14

arxiv.org/abs/1106.2841v2

Phys. Rev. Lett. 108, 160402 (2012)

Physics

Quantum Physics

5 pages, 3 figures. Replaced with published version

Scientific paper

10.1103/PhysRevLett.108.160402

We analyze the steady state entanglement generated in a coherently coupled dimer system subject to dephasing noise as a function of the degree of Markovianity of the evolution. By keeping fixed the effective noise strength while varying the memory time of the environment, we demonstrate that non-Markovianity is an essential, quantifiable resource that may support the formation of steady state entanglement whereas purely Markovian dynamics governed by Lindblad master equations lead to separable steady states. This result illustrates possible mechanisms leading to long-lived entanglement in purely decohering, possibly local, environments. We present a feasible experimental demonstration of this noise assisted phenomenon using a system of trapped ions.

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