Bloch Oscillations in a Josephson Circuit

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dc.creatorBoulant, N.
dc.creatorIthier, G.
dc.creatorNguyen, F.
dc.creatorBertet, P.
dc.creatorPothier, H.
dc.creatorVion, D.
dc.creatorUrbina, C.
dc.creatorEsteve, D.
dc.date2006-05-02
dc.date.accessioned2026-07-07T07:08:42Z
dc.date.available2026-07-07T07:08:42Z
dc.descriptionBloch oscillations predicted to occur in current-biased single Josephson junctions have eluded direct observation up to now. Here, we demonstrate similar Bloch oscillations in a slightly richer Josephson circuit, the quantronium. The quantronium is a Bloch transistor with two small junctions in series, defining an island, in parallel with a larger junction. In the ground state, the microwave impedance of the device is modulated periodically with the charge on the gate capacitor coupled to the transistor island. When a current flows across this capacitor, the impedance modulation occurs at the Bloch frequency, which yields Bloch sidebands in the spectrum of a reflected continuous microwave signal. We have measured this spectrum, and compared it to predictions based on a simple model for the circuit. We discuss the interest of this experiment for metrology and for mesoscopic physics.
dc.identifierhttps://arxiv.org/abs/cond-mat/0605061
dc.identifierhttp://arxiv.org/abs/cond-mat/0605061
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/110805
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleBloch Oscillations in a Josephson Circuit
dc.typetext

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