Geometric phase induced by a cyclically evolving squeezed vacuum reservoir (2005)
Carollo, Angelo, Palma, G. Massimo, Lozinski, Artur, Santos, Marcelo Franca, Vedral, Vlatko
We propose a new way to generate an observable geometric phase by means of a completely incoherent phenomenon. We show how to imprint a geometric phase to a system by "adiabatically" manipulating the...
Berry phase in open quantum systems: a quantum Langevin equation approach (2004)
De Chiara, Gabriele, Lozinski, Artur, Palma, G. Massimo
The evolution of a two level system with a slowly varying Hamiltonian, modeled as s spin 1/2 in a slowly varying magnetic field, and interacting with a quantum environment, modeled as a bath of...
Quantum dynamical entropy and decoherence rate (2003)
Alicki, Robert, Lozinski, Artur, Pakonski, Prot, Zyczkowski, Karol
We investigate quantum dynamical systems defined on a finite dimensional Hilbert space and subjected to an interaction with an environment. The rate of decoherence of initially pure states, measured...
Entanglement of 2xK quantum systems (2003)
Lozinski, Artur, Buchleitner, Andreas, Zyczkowski, Karol, Wellens, Thomas
We derive an analytical expression for the lower bound of the concurrence of mixed quantum states of composite 2xK systems. In contrast to other, implicitly defined entanglement measures, the...
Euroattractor: a brief introduction to Iterated Function Systems (2002)
Zyczkowski, Karol, Lozinski, Artur
In this work we propose a definition of an Euroattractor: an attracting invariant measure of a certain iterated functions system (IFS). An IFS is defined by specifying a set of functions, defined in...
Quantum Iterated Function Systems (2002)
Lozinski, Artur, Zyczkowski, Karol, Slomczynski, Wojciech
Iterated functions system (IFS) is defined by specifying a set of functions in a classical phase space, which act randomly on an initial point. In an analogous way, we define a quantum iterated...
Irreversible Quantum Baker Map (2002)
Lozinski, Artur, Pakonski, Prot, Zyczkowski, Karol
We propose a generalization of the model of classical baker map on the torus, in which the images of two parts of the phase space do overlap. This transformation is irreversible and cannot be...