Decoherence of Bell states by local interactions with a dynamic spin environment (2008)
Cormick, Cecilia, Paz, Juan Pablo
We study the evolution of a system of two qubits, each of which interacts locally with a spin chain with nontrivial internal Hamiltonian. We present an exact solution to this problem and analyze the...
Decoherence induced by a dynamic spin environment (I): The universal regime (2007)
Cormick, Cecilia, Paz, Juan Pablo
This article analyzes the decoherence induced on a single qubit by the interaction with a spin chain with nontrivial internal dynamics (XY-type interactions). The aim of the paper is to study the...
Cormick, Cecilia, Paz, Juan Pablo
This article studies the decoherence induced on a system of two qubits by local interactions with a spin chain with nontrivial internal dynamics (governed by an XY Hamiltonian). Special attention is...
Interference in discrete Wigner functions (2006)
Cormick, Cecilia, Paz, Juan Pablo
We analyse some features of the class of discrete Wigner functions that was recently introduced by Gibbons et al. to represent quantum states of systems with power-of-prime dimensional Hilbert spaces...
Classicality in discrete Wigner functions (2005)
Cormick, Cecilia, Galvao, Ernesto F., Gottesman, Daniel, Paz, Juan Pablo, Pittenger, Arthur O.
Gibbons et al. [Phys. Rev. A 70, 062101(2004)] have recently defined a class of discrete Wigner functions W to represent quantum states in a Hilbert space with finite dimension. We show that the only...