Dissipative effects on a generation scheme of a W state in an array of coupled Josephson junctions

R. Migliore, M. Scala, A. Napoli, K. Yuasa, H. Nakazato, A. Messina

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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.

Original languageEnglish
Article number075503
JournalJournal of Physics B: Atomic, Molecular and Optical Physics
Issue number7
Publication statusPublished - 2011 Apr 14


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Condensed Matter Physics

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