Titlebook: Quantum Computing and Quantum Bits in Mesoscopic Systems; A. J. Leggett,B. Ruggiero,P. Silvestrini Book 2004 Springer Science+Business Med

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New Quantum Nanostructures,notubes with beryllium atoms in the hexagonal faces should exhibit uniformly metallic properties with multiple conduction channels of disparate character. The apical dislocation in a carbon nanocone mixes the low-energy electronic states of a graphene sheet and produces a geometrically derived effec

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Transport Investigations of Chemical Nanostructures,described. In the first part of the presentation, we describe transport measurements of single-nanotube transistors that allow the characterization of electronic shell filling and exchange coupling as well as Fabry-Perot interference between traveling electron waves in metallic nanotubes. In the sec

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Long-Range Coherence in Bose-Einstein Condensates, a harmonic magnetic trap. The array realizes at the same time an atom interferometer, which allows monitoring coherence across the system and obtaining via some simple theoretical assumptions the most relevant parameters of the ground state. We can introduce the analogous of an external voltage acr

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A Simple Quantum Equation for Decoherence through Interaction with the Environment,us replacing the differential Liouvillevon Neumann (LvN) equation with a finite-difference version of it. In this way, one is given the possibility of using a rather simple quantum equation to describe the decoherence effects due to interaction with the environment..In other words, the mere introduc

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Low Tc Josephson Junction Response to an Ultrafast Laser Pulse, is assumed to be negligible and relaxation of the order parameter is disregarded. The time evolution of the order parameter phase ., after the arrival of the pulse, is studied within a time-dependent Bogoliubov-de Gennes mean field theory. While the effect of the optical frequency of the laser is a

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Decoherence In Flux Qubits Due to 1/f Noise in Josephson Junctions,quantum states in a current-biased Josephson junctions [.,.]. These experiments are of considerable interest not only from a fundamental point of view but also because such devices may ultimately be used as qubits in a quantum computer [.]. Probably the single largest issue in the eventual exploitat