Joint ICTP/SISSA SP Seminar @ICTP Stasi Room: Markus MUELLER Tuesday 18 July at 11:00

[Condensed Matter Section]

Joint ICTP/SISSA CM Statistical Physics Seminar

Tuesday, 18 July at 11:00 a.m.
Luigi Stasi Seminar Room, first floor, ICTP Leonardo building

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Speaker: Markus MUELLER (PSI, Villigen, Switzerland)

Title: Creating Cool Quantum Matter by Non-linear Driving

Abstract:
Generically, driving a many-body system simply heats up the system. 
However, by using smart driving protocols one can achieve more 
interesting steady states of quantum matter, for example states with 
extremely low effective temperatures. This is what happens in the 
so-called thermal mixing method, which is used to cool nuclear spins (in 
preparation for NMR).
The technique consists in  driving non-linearly a system of disordered 
electronic spins, which drives it to an ultra-cold steady state, whose 
temperature is transmitted to the nuclei.
Interestingly the cooling effect is optimized by working in the vicinity 
of an electron's many-body localization crossover.
I will explain the physical principles at work and discuss how similar 
mechanisms could be used in the context of cold atoms or specific 
ferro-magnets.