Probing Noise in Flux Qubits via Macroscopic Resonant Tunneling; Physical Review Letters; Vol. 101, iss. 11

Probing Noise in Flux Qubits via Macroscopic Resonant Tunneling; Physical Review Letters; Vol. 101, iss. 11

Bibliographische Detailangaben
Parent link:Physical Review Letters: Scientific Journal.— , 1958-
Vol. 101, iss. 11.— 2008.— [117003 , 4 p.]
Weitere Verfasser: Harris R., Johnson M. W., Han S., Berkley A. J., Johansson J., Bunyk P., Ladizinsky E., Govorkov S., Thom M. C., Uchaykin S. V. Sergey Victorovich, Bumble B., Fung A., Kaul A., Kleinsasser A., Amin M. H. S., Averin D. V.
Zusammenfassung:Title screen
Macroscopic resonant tunneling between the two lowest lying states of a bistable rf SQUID is used to characterize noise in a flux qubit. Measurements of the incoherent decay rate as a function of flux biasrevealed a Gaussian-shaped profile that is not peaked at the resonance point but is shifted to a bias at which the initial well is higher than the target well. The rms amplitude of the noise, which is proportionalto the dephasing rate 1=’, was observed to be weakly dependent on temperature below 70 mK. Analysis of these results indicates that the dominant source of low energy flux noise in this device is a quantummechanical environment in thermal equilibrium
Режим доступа: по договору с организацией-держателем ресурса
Sprache:Englisch
Veröffentlicht: 2008
Schlagworte:
электронный ресурс
труды учёных ТПУ
Online-Zugang:http://dx.doi.org/10.1103/PhysRevLett.101.117003
http://arxiv.org/abs/0712.0838
Format: Elektronisch Buchkapitel
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=637146

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