We report on experiments performed to probe quantum coherence in a system consisting of an rf-SQUID in which the Josephson junction is replaced by a small loop containing two junctions in parallel. At temperatures of the order of 10 mK the system may develop three potential energy wells, which modify the usual two well energy profile and thereby verify the qubit manipulation strategy. The appearance of the third potential well can be interpreted as evidence of a butterfly Catastrophe, namely, a catastrophe expected for a system described by four control parameters and one state variable.

Castellano, M.G., Chiarello, F., Leoni, R., Mattioli, F., Torrioli, G., Carelli, P., et al. (2007). Catastrophe observation in a Josephson-junction system. PHYSICAL REVIEW LETTERS, 98(17) [10.1103/PhysRevLett.98.177002].

Catastrophe observation in a Josephson-junction system

CIRILLO, MATTEO;
2007

Abstract

We report on experiments performed to probe quantum coherence in a system consisting of an rf-SQUID in which the Josephson junction is replaced by a small loop containing two junctions in parallel. At temperatures of the order of 10 mK the system may develop three potential energy wells, which modify the usual two well energy profile and thereby verify the qubit manipulation strategy. The appearance of the third potential well can be interpreted as evidence of a butterfly Catastrophe, namely, a catastrophe expected for a system described by four control parameters and one state variable.
Pubblicato
Rilevanza internazionale
Articolo
Sì, ma tipo non specificato
Settore FIS/03 - Fisica della Materia
eng
Con Impact Factor ISI
Potential energy; Quantum computers; Quantum electronics; SQUIDs; Butterfly catastrophe; Control parameters; Potential energy wells; Josephson junction devices
Castellano, M.G., Chiarello, F., Leoni, R., Mattioli, F., Torrioli, G., Carelli, P., et al. (2007). Catastrophe observation in a Josephson-junction system. PHYSICAL REVIEW LETTERS, 98(17) [10.1103/PhysRevLett.98.177002].
Castellano, M; Chiarello, F; Leoni, R; Mattioli, F; Torrioli, G; Carelli, P; Cirillo, M; Cosmelli, C; De Waard, A; Frossati, G; Gronbech Jensen, N; Poletto, S
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/55533
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