47 citations · 238 across the 22 of their papers we have counts for
8 papers · 1 filter
Coherent oscillations in a superconducting tunable flux qubit manipulated without microwaves
S. Poletto, F. Chiarello, M. G. Castellano +6
We experimentally demonstrate the coherent oscillations of a tunable superconducting flux qubit by manipulating its energy potential with a nanosecond-long pulse of magnetic flux.…
Catastrophe observation in a Josephson junction system
M. G. Castellano, F. Chiarello, R. Leoni +9
We report on a direct quantitative comparison between Thom's general catastrophe theory for systems presenting discontinuous behavior and experimental reality. It is demonstrated t…
Static flux bias of a flux qubit using persistent current trapping
Maria Gabriella Castellano, Fabio Chiarello, Guido Torrioli +1
Qubits based on the magnetic flux degree of freedom require a flux bias, whose stability and precision strongly affect the qubit performance, up to a point of forbidding the qubit…
Characterization of a fabrication process for the integration of superconducting qubits and RSFQ circuits
Maria Gabriella Castellano, Leif Gronberg, Pasquale Carelli +7
In order to integrate superconducting qubits with rapid-single-flux-quantum (RSFQ) control circuitry, it is necessary to develop a fabrication process that fulfills at the same tim…
Tunable Flux Qubit manipulated by fast pulses: operating requirements, dissipation and decoherence
Fabio Chiarello
A double SQUID manipulated by fast magnetic flux pulses can be used as a tunable flux qubit. In this paper we study the requirements for the qubit operation, and evaluate dissipati…
Superconducting tunable flux qubit with direct readout scheme
Fabio Chiarello, Pasquale Carelli, Maria Gabriella Castellano +6
We describe a simple and efficient scheme for the readout of a tunable flux qubit, and present preliminary experimental tests for the preparation, manipulation and final readout of…