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Ferromagnetic resonant tunneling diodes as spin polarimeters and polarizers
Francesco Giazotto, Fabio Taddei, Rosario Fazio +1
A method for measuring the degree of spin polarization of magnetic materials based on spin-dependent resonant tunneling is proposed. The device we consider is a ballistic double-ba…
Active suppression of dephasing in Josephson-junction qubits
Dmitri V. Averin, Rosario Fazio
Simple majority code correcting dephasing errors by encoding a qubit of information into physical qubits is studied quantitatively. We derive an equation for quasicontin…
Decoherence in a Cooper pair shuttle
Alessandro Romito, Francesco Plastina, Rosario Fazio
We examine decoherence effects in the Josephson current of a Cooper pair shuttle. Dephasing due to gate voltage fluctuations can either suppress or enhance the critical current and…
Pumping spin with electrical fields
M. Governale, F. Taddei, Rosario Fazio
Spin currents can be obtained through adiabatic pumping by means of electrical gating only. This is possible by making use of the tunability of the Rashba spin-orbit coupling in se…
Charge and current fluctuations in a superconducting single electron transistor near a Cooper pair resonance
Mahn-Soo Choi, Francesco Plastina, Rosario Fazio
We analyze charge tunneling statistics and current noise in a superconducting single-electron transistor in a regime where the Josephson-quasiparticle cycle is the dominant mechani…
Interplay between pairing and exchange in small metallic dots
G. Falci, Rosario Fazio, A. Mastellone
We study the effects of the mesoscopic fluctuations on the competition between exchange and pairing interactions in ultrasmall metallic dots when the mean level spacing is comparab…