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Mirror quiescence and high-sensitivity position measurements with feedback
David Vitali, Stefano Mancini, Luciano Ribichini +1
We present a detailed study of how phase-sensitive feedback schemes can be used to improve the performance of optomechanical devices. Considering the case of a cavity mode coupled…
Heating and decoherence suppression using decoupling techniques
D. Vitali, P. Tombesi
We study the application of decoupling techniques to the case of a damped vibrational mode of a chain of trapped ions, which can be used as a quantum bus in linear ion trap quantum…
Entangling macroscopic oscillators exploiting radiation pressure
Stefano Mancini, Vittorio Giovannetti, David Vitali +1
It is shown that radiation pressure can be profitably used to entangle {\it macroscopic} oscillators like movable mirrors, using present technology. We prove a new sufficient crite…
High-sensitivity force measurement using entangled probes
Stefano Mancini, Paolo Tombesi
We show the possibility to improve the measurement sensitivity of a weak force by using two meters in an entangled state. This latter can be achieved by exploiting radiation pressu…
Stochastic control of quantum coherence
Stefano Mancini, David Vitali, Paolo Tombesi +1
The application of a random modulation of a system parameter usually increases decoherence effects. Here we show how, employing an appropriate stochastic modulation, it is instead…
Towards a tomographic picture of a Bose-Einstein condensate
Stefano Mancini, Mauro Fortunato, Paolo Tombesi +1
We investigate by means of numerical simulations the possibilities of tomographic techniques applied to a Bose-Einstein condensate in order to reconstruct its ground state. Essenti…