Fluctuation-dissipation relations of a tunnel junction driven by a quantum circuit

We derive fluctuation-dissipation relations for a tunnel junction driven through a resonator displaying strong quantum fluctuations. We find that the fluctuation-dissipation relations derived for classical external drives hold, provided the effect of the circuit's quantum fluctuations is incorp...

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Bibliographic Details
Published in:Physical review letters 2015-03, Vol.114 (12), p.126801-126801, Article 126801
Main Authors: Parlavecchio, O, Altimiras, C, Souquet, J-R, Simon, P, Safi, I, Joyez, P, Vion, D, Roche, P, Esteve, D, Portier, F
Format: Article
Language:English
Subjects:
Bias
Circuits
Condensed Matter
Current voltage characteristics
Electric circuits
Fluctuation
High frequencies
Mesoscopic Systems and Quantum Hall Effect
Physics
Resonators
Tunnel junctions
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Summary:We derive fluctuation-dissipation relations for a tunnel junction driven through a resonator displaying strong quantum fluctuations. We find that the fluctuation-dissipation relations derived for classical external drives hold, provided the effect of the circuit's quantum fluctuations is incorporated into the modified nonlinear current voltage characteristics. We also demonstrate that all quantities measured under a time dependent bias can be reconstructed from their values measured under a dc bias using photoassisted tunneling relations. We confirm these predictions by implementing the circuit and measuring the dc current through the junction, its high frequency admittance, and its current noise at the frequency of the resonator.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.114.126801