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SUMMARY:QSE Quantum Seminar: Emergent quantum coherence in random magnets 
 allows to probe slow quantum dynamics
DTSTART:20240118T120000
DTEND:20240118T133000
DTSTAMP:20260511T193009Z
UID:5a0134d1ebfe8cffd5f7d21741a35d08a94e1ea9a394a0f8b1a0413e
CATEGORIES:Conferences - Seminars
DESCRIPTION:Markus Müller\nPlease join us for the QSE Center Quantum S
 eminar with Prof. Markus Müller of the Paul Scherrer Institute\, who wil
 l speak\, on Thursday\, January 18 about "Emergent quantum coherence in 
 random magnets allows to probe slow quantum dynamics".\nLocation: CE 1 101
 \n\nPizzas will be available before the seminar at 12:00. All PhDs\, post
 docs\, students\, and PIs are welcome to join us.\n\nTITLE: Emergent quan
 tum coherence in random magnets allows to probe slow quantum dynamics\n\nA
 BSTRACT: \nLocal excitations in magnetic materials are usually expected t
 o be highly incoherent\, since they dephase very quickly due to mutual int
 eractions. However\, there are interesting exceptions to this common lore.
  Our joint experimental and theoretical study of the random rare-earth ma
 gnet LiY_{1−x}Tb_xF_4 reveals that a combination of hyperfine interactio
 ns\, external magnetic fields and substantial disorder allows excitations 
 on pairs of Tb sites to retain coherence for remarkably long times\, as th
 ey can be well shielded from the dominant decoherence channels. The remain
 ing decoherence turns out to probe the slow dynamics in the neighborhood o
 f these degrees of freedom\, which thus act as quantum sensors.This is par
 ticularly interesting as a means to probe the nearly many-body localized d
 ynamics of strongly disordered dipolar magnets.\n\nBIO: \nMarkus Müller 
 is a theoretical physicist working on a broad range of topics between quan
 tum condensed matter and the statistical physics of disordered systems. He
  did his undergraduate studies at ETH Zürich\, followed by a PhD in Orsay
 \, Paris. After postdoctoral fellowships at Rutgers and Harvard University
 \, and an SNF junior professorship in Geneva he joined the International C
 enter of Theoretical Physics in Trieste in 2009\, where he established him
 self as an expert on many-body localization\, quantum glasses\, quantum tr
 ansport and out-of-equilibrium physics. In 2015 he moved to the Paul Scher
 rer Institute\, where one of his main interests are the manifold magnetic 
 incarnations of the interplay between disorder\, interactions and quantum 
 fluctuations.
LOCATION:CE 1 101 https://plan.epfl.ch/?room==CE%201%20101
STATUS:CONFIRMED
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