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21 papers · 2 filters
Collapse in ultracold Bose Josephson junctions
Marco Bilardello, Andrea Trombettoni, Angelo Bassi
We investigate how ultracold atoms in double well potentials can be used to study and put bounds on models describing wave function collapse. We refer in particular to the continuo…
Stochastic unraveling of positive quantum dynamics
Matteo Caiaffa, Andrea Smirne, Angelo Bassi
Stochastic unravelings represent a useful tool to describe the dynamics of open quantum systems and standard methods, such as quantum state diffusion (QSD), call for the complete p…
Improved noninterferometric test of collapse models using ultracold cantilevers
A. Vinante, R. Mezzena, P. Falferi +2
Spontaneous collapse models predict that a weak force noise acts on any mechanical system, as a consequence of the collapse of the wave function. Significant upper limits on the co…
Tensor power of dynamical maps and P- vs. CP-divisibility
Fabio Benatti, Dariusz Chruściński, Sergey Filippov
The are several non-equivalent notions of Markovian quantum evolution. In this paper we show that the one based on the so-called CP-divisibility of the corresponding dynamical map…
Signatures of many-body localisation in the dynamics of two-sites entanglement
Fernando Iemini, Angelo Russomanno, Davide Rossini +2
We are able to detect clear signatures of dephasing -- a distinct trait of Many-Body Localisation (MBL) -- via the dynamics of two-sites entanglement, quantified through the concur…
Correlations in quantum thermodynamics: Heat, work, and entropy production
S. Alipour, F. Benatti, F. Bakhshinezhad +3
We provide a characterization of energy in the form of exchanged heat and work between two interacting constituents of a closed, bipartite, correlated quantum system. By defining a…