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Complete disentanglement by partial pure dephasing

Katarzyna Roszak·Pawel Machnikowski
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Abstract

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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Katarzyna Roszak, Pawel Machnikowski. 2006-07-19. Complete disentanglement by partial pure dephasing. https://doi.org/10.1103/physreva.73.022313

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