ERGODICITY IN RANDOMLY COLLIDING QUBITS
- Authors: Gennaro, G; Benenti, G; Palma, GM
- Publication year: 2009
- Type: Articolo in rivista (Articolo in rivista)
- Key words: Random collisions; entanglement; irreversibility
- OA Link: http://hdl.handle.net/10447/36815
Abstract
The dynamics of a single qubit randomly colliding with an environment consisting of just two qubits is discussed. It is shown that the system reaches an equilibrium state which coincides with a pure random state of three qubits. Furthermore the time average and the ensemble averages of the quantities used to characterize the approach to equilibrium (purity and tangles) coincide, a signature of ergodic behavior.