A quantum thermodynamics approach to optimization in classical complex systems

16 Mar 2023, 11:45
45m
Lärosal 8 (Albano Building 2)

Lärosal 8

Albano Building 2

Speaker

Alberto Imparato (Department of Physics and Astronomy University of Aarhus)

Description

An optimization problem can be translated into physics language as the quest for the energy minimum of a classical complex system with a Hamiltonian that encodes the problem itself. Stretching the analogy further, the optimization problem can be seen as the controlled cooling of such a complex system so as it lands in a minimum of its energy landscape corresponding to the optimal solution of the given problem.

I will discuss how an energy minimization problem can be efficiently tackled by employing a non-Markovian quantum bath prepared in a low energy state.  The energy minimization problem is thus turned into a thermodynamic cooling protocol where we repeatedly put the system of interest in contact with a colder auxiliary system.

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