TY - JOUR
T1 - Dissipative effects on a generation scheme of a W state in an array of coupled Josephson junctions
AU - Migliore, R.
AU - Scala, M.
AU - Napoli, A.
AU - Yuasa, K.
AU - Nakazato, H.
AU - Messina, A.
PY - 2011/4/14
Y1 - 2011/4/14
N2 - 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.
AB - 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.
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U2 - 10.1088/0953-4075/44/7/075503
DO - 10.1088/0953-4075/44/7/075503
M3 - Article
AN - SCOPUS:79953653560
SN - 0953-4075
VL - 44
JO - Journal of Physics B: Atomic, Molecular and Optical Physics
JF - Journal of Physics B: Atomic, Molecular and Optical Physics
IS - 7
M1 - 075503
ER -