1.9k citations · 19.9k across the 314 of their papers we have counts for
15 papers · 1 filter
Pumping through a quantum dot in the proximity of a superconductor
Janine Splettstoesser, Michele Governale, Jürgen König +2
We study adiabatic pumping through a quantum dot tunnel-coupled to one normal and one superconducting lead. We generalize a formula which relates the pumped charge through a quantu…
Decoherence induced by interacting quantum spin baths
Davide Rossini, Tommaso Calarco, Vittorio Giovannetti +2
We study decoherence induced on a two-level system coupled to a one-dimensional quantum spin chain. We consider the cases where the dynamics of the chain is determined by the Ising…
Robust optimal quantum gates for Josephson charge qubits
Simone Montangero, Tommaso Calarco, Rosario Fazio
Quantum optimal control theory allows to design accurate quantum gates. We employ it to design high-fidelity two-bit gates for Josephson charge qubits in the presence of both leaka…
Luther-Emery Phase and Atomic-Density Waves in a Trapped Fermion Gas
Gao Xianlong, M. Rizzi, Marco Polini +4
The Luther-Emery liquid is a state of matter that is predicted to occur in one-dimensional systems of interacting fermions and is characterized by a gapless charge spectrum and a g…
Information transfer rates in spin quantum channels
Davide Rossini, Vittorio Giovannetti, Rosario Fazio
We analyze the communication efficiency of quantum information transfer along unmodulated spin chains by computing the communication rates of various protocols. The effects of temp…
Transport properties of a periodically driven superconducting single electron transistor
Alessandro Romito, Simone Montangero, Rosario Fazio
We discuss coherent transport of Cooper pairs through a Cooper pair shuttle. We analyze both the DC and AC Josephson effect in the two limiting cases where the charging energy $E_C…
Dynamics and Current Fluctuations in AC driven Charge Shuttle
F. Pistolesi, R. Fazio
The behavior of a charge shuttle under a pure AC field has been recently considered theoretically and experimentally. If the system presents an asymmetry in the tunneling amplitude…
Anomalous suppression of the shot noise in a nanoelectromechanical system
F. Haupt, F. Cavaliere, R. Fazio +1
In this paper we report a relaxation-induced suppression of the noise for a single level quantum dot coupled to an oscillator with incoherent dynamics in the sequential tunneling r…
Electronic Hong-Ou-Mandel interferometer for multi-mode entanglement detection
Vittorio Giovannetti, Diego Frustaglia, Fabio Taddei +1
We show that multi-mode entanglement of electrons in a mesoscopic conductor can be detected by a measurement of the zero-frequency current correlations in an electronic Hong-Ou-Man…
Decoherence by engineered quantum baths
Davide Rossini, Tommaso Calarco, Vittorio Giovannetti +2
We introduce, and determine decoherence for, a wide class of non-trivial quantum spin baths which embrace Ising, XY and Heisenberg universality classes coupled to a two-level syste…
Robustness of optimal working points for non-adiabatic holonomic quantum computation
Antonio Trullo, Paolo Facchi, Rosario Fazio +3
Geometric phases are an interesting resource for quantum computation, also in view of their robustness against decoherence effects. We study here the effects of the environment on…
Entanglement in One-Dimensional Spin Systems
A. Osterloh, L. Amico, F. Plastina +1
For the anisotropic XY model in transverse magnetic field, we analyze the ground state and its concurrence-free point for generic anisotropy, and the time evolution of initial Bell…
Adiabatic pumping through a quantum dot with coulomb interactions: A perturbation expansion in the tunnel coupling
Janine Splettstoesser, Michele Governale, Jürgen König +1
We present a diagrammatic real-time approach to adiabatic pumping of electrons through interacting quantum dots. Performing a systematic perturbation expansion in the tunnel-coupli…
Huge nonequilibrium magnetoresistance in hybrid superconducting spin valves
F. Giazotto, F. Taddei, Rosario Fazio +1
A hybrid ferromagnet-superconductor spin valve is proposed. Its operation relies on the interplay between nonequilibrium transport and proximity-induced exchange coupling in superc…
Cooling electrons by magnetic-field tuning of Andreev reflection
F. Giazotto, F. Taddei, M. Governale +3
A solid-state cooling principle based on magnetic-field-driven tunable suppression of Andreev reflection in superconductor/two-dimensional electron gas nanostructures is proposed.…