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Home page > Annuaire > CALLAN-JONES Andrew > Theory Club Wednesday February 12 at 12:00 in room 646A. Matteo Marcuzzi: "Associative memory behaviour in open quantum systems".

Theory Club Wednesday February 12 at 12:00 in room 646A. Matteo Marcuzzi: "Associative memory behaviour in open quantum systems"

Associative memory behaviour in open quantum systems

Matteo Marcuzzi

Abstract: Recent studies have started connecting the behaviour of associative memory models, such as the Hopfield neural network, to the physics of quantum systems. This has raised new questions such as whether new physics may stem from the quantum effects and whether this behaviour can be in fact observed even in the presence of decoherence and dissipation. I will first discuss a dissipative quantum Hopfield model and relate how its phase diagram differs from its classical counterpart, highlighting the emergence of a limit cycle phase. I will then introduce a disordered, open spin-boson model which, via a perturbative treatment, can be effectively described by a rate equation and show how the corresponding stochastic process displays, in a specific range of its parameters, some features reminiscent of those of associative memories and particularly the emergence of several distinct basins of attractions.  

Wednesday February 12 at 12:00 in room 646A


Contact : Published on / Publié le 5 February