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Influence of dephasing on many-body localization
Mariya V. Medvedyeva, Tomaz Prosen, Marko Znidaric
We study the effects of dephasing noise on a prototypical many-body localized system -- the XXZ spin 1/2 chain with a disordered magnetic field. At times longer than the inverse de…
Dissipative remote-state preparation in an interacting medium
Marko Znidaric
Standard quantum state preparation methods work by preparing a required state locally and then distributing it to a distant location by a free-space propagation. We instead study p…
Relaxation times of dissipative many-body quantum systems
Marko Znidaric
We study relaxation times, also called mixing times, of quantum many-body systems described by a Lindblad master equation. We in particular study the scaling of the spectral gap wi…
Geometry of local quantum dissipation and fundamental limits to local cooling
Marko Znidaric
We geometrically characterize one-qubit dissipators of a Lindblad type. An efficient parametrization in terms of 6 linear parameters opens the way to various optimizations with loc…