6533b82cfe1ef96bd128f6ac
RESEARCH PRODUCT
Dissipative effects on a generation scheme of a W state in an array of coupled Josephson junctions
Anna NapoliHiromichi NakazatoRosanna MiglioreM. ScalaKazuya YuasaAntonino Messinasubject
PhysicsJosephson effectOpen quantum systemQuantum mechanicsQubitPhenomenological modelMaster equationDissipative systemW stateCondensed Matter PhysicsUnitary stateAtomic and Molecular Physics and Opticsdescription
The dynamics of an open quantum system, consisting of three superconducting qubits interacting with independent reservoirs, is investigated to elucidate the effects of the environment on a unitary generation scheme of W states (Migliore R et al 2006 Phys. Rev. B 74 104503). To this end a microscopic master equation is constructed and its exact resolution predicts the generation of a Werner-like state instead of the W state. A comparison between our model and a more intuitive phenomenological model is also considered, in order to find the limits of the latter approach in the case of structured reservoirs.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-03-16 |