Superconducting Nanocircuits | Quantum Dissipative Systems | Quantum communication | Coherent control of quasiparticles in graphene | Further research lines |
Superconducting Nanocircuits
Over the years, there
has been a rapid down-scaling in classical logic devices which has lead
to an enormous increase of the computer performance. The recent
discovery
of new principles of computation based on quantum mechanics has opened
up new perspectives. In recent years it has become clear that the laws
of quantum mechanics allow for
exponentially more efficient ways of performing computation. The origin
of such e
xponential efficiency can be ascribed to the intrinsic parallelism of
quantum time evolution and can be understood by viewing quantum
computers as programmable quantum interferometers
Josephson junctions have recently attracted much attention as candidate
physical systems for the technological implementation of quantum
computation. Much of their appeal comes from the interest for systems
amenable of large scale integration.
We are studying various aspects of the quantum mechanical bahaviour of
Josephson networks. At present we are interested in:
- Implementation of universal gates with Josephson nanocircuits
- Advanced quantum control of superconducting networks
RECENT HIGHLIGHTS by SMT:
Optimal tuning of solid-state quantum gates: A universal two-qubit gate
Paladino E., Mastellone A., D'Arrigo A., Falci G.
Phys. Rev. B 81, 052502 (2010)
Entanglement degradation in the solid state: Interplay of adiabatic and quantum noise
Bellomo B., Compagno G. , D'Arrigo A., Falci G., Lo Franco R., and Paladino E.
Phys. Rev. A 81, 062309 (2010)
Advanced control with a Cooper-pair box: Stimulted Raman adiabtic passage and
Fock-state generation in a nanomechanical resonator
Jens Siewert, Tobias Brandes, and G. Falci
Phys. Rev. B 79, 024504 (2009)
Effects of low-frequency noise cross-correlations in coupled superconducting qubits
D'Arrigo A., Mastellone A., Paladino E., and Falci G.
New Journal of Physics 10, 115006 (2008)