Complete disentanglement by partial pure dephasing

Details Complete disentanglement by partial pure dephasing Complete disentanglement by partial pure dephasing

2005-07-04

arxiv.org/abs/quant-ph/0507027v2

PhysRevA 73, 022313 (2006)

Physics

Quantum Physics

Final, considerably extended version, 6 pages, 4 figures

Scientific paper

10.1103/PhysRevA.73.022313

We study the effect of pure dephasing on the entanglement of a pair of two-level subsystems (qubits). We show that partial dephasing induced by a super-Ohmic reservoir, corresponding to well-established properties of confined charge states and phonons in semiconductors, may lead to complete disentanglement. We show also that the disentanglement effect increases with growing distance between the two subsystems.

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