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.

Migliore, R., Scala, M., Napoli, A., Yuasa, K., Nakazato, H., & Messina, A. (2011). Dissipative effects on a scheme of generation of a W state in an array of coupled Josephson junctions. JOURNAL OF PHYSICS. B, ATOMIC MOLECULAR AND OPTICAL PHYSICS, 44, 075503-1-075503-9.

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

SCALA, Matteo;NAPOLI, Anna;MESSINA, Antonino
2011

Abstract

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.
Migliore, R., Scala, M., Napoli, A., Yuasa, K., Nakazato, H., & Messina, A. (2011). Dissipative effects on a scheme of generation of a W state in an array of coupled Josephson junctions. JOURNAL OF PHYSICS. B, ATOMIC MOLECULAR AND OPTICAL PHYSICS, 44, 075503-1-075503-9.
File in questo prodotto:
File Dimensione Formato  
Dissipative_effects_on_a_generation_scheme_of_a_W_.pdf

non disponibili

Descrizione: pdf
Dimensione 1.96 MB
Formato Adobe PDF
1.96 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/65700
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? 8
social impact