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36 papers · 1 filter
Infinitesimal invariant and vector bundles
Gian Pietro Pirola, Cecilia Rizzi
We study the Saito-Ikeda infinitesimal invariant of the ccle defined by curves in their jacobians using rank (k+1) vector bundles and we give a criterion for which the higher cycle…
Bound states in the continuum in a single-level Fano-Anderson model
Stefano Longhi
Bound states in the continuum (BIC) are shown to exist in a single-level Fano-Anderson model with a colored interaction between the discrete state and a tight-binding continuum, wh…
Stopping and Time Reversal of Light in Dynamic Photonic Structures via Bloch Oscillations
Stefano Longhi
It is theoretically shown that storage and time-reversal of light pulses can be achieved in a coupled-resonator optical waveguide by dynamic tuning of the cavity resonances without…
Information gain in quantum continual measurements
Albert Barchielli, Giancarlo Lupieri
Inspired by works on information transmission through quantum channels, we propose the use of a couple of mutual entropies to quantify the efficiency of continual measurement schem…
The phase-locked mean impulse response of a turbulent channel flow
Paolo Luchini, Maurizio Quadrio, Simone Zuccher
We describe the first DNS-based measurement of the complete mean response of a turbulent channel flow to small external disturbances. Space-time impulsive perturbations are applied…
Wide-band optical field concentrator for low-index core propagation
D. de Ceglia, M. De Sario, A. D'Orazio +4
We propose a novel chirped structure consisting of a low index polymer core bounded by modulated multilayer claddings, to realize an optical field concentrator with virtually zero…