193 citations · 1.2k across the 47 of their papers we have counts for
5 papers · 1 filter
Work distributions for random sudden quantum quenches
Marcin Łobejko, Jerzy Łuczka, Peter Talkner
The statistics of work performed on a system by a sudden random quench is investigated. Considering systems with finite dimensional Hilbert spaces we model a sudden random quench b…
Negativity and quantum discord in Davies environments
J. Dajka, M. Mierzejewski, J. Luczka +2
We investigate the time evolution of negativity and quantum discord for a pair of non-interacting qubits with one being weakly coupled to a decohering Davies--type Markovian enviro…
Distance between quantum states in presence of initial qubit-environment correlations: a comparative study
Jerzy Dajka, Jerzy Łuczka, Peter Hänggi
The time evolution of the trace distance between two states of an open quantum system may increase due to initial system-environment correlations, thus exhibiting a breakdown of di…
Geometric phase as a determinant of a qubit--environment coupling
J. Dajka, J. Luczka, P. Hanggi
We investigate the qubit geometric phase and its properties in dependence on the mechanism for decoherence of a qubit weakly coupled to its environment. We consider two sources of…
Dephasing of qubits by the Schrödinger cat
J. Dajka, M. Mierzejewski, J. Luczka +1
We study the dephasing of a single qubit coupled to a bosonic bath. In particular, we investigate the case when the bath is initially prepared in a pure state known as the Schrödin…