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SUMMARY:Liouvillian design of metastable quantum dynamics
DTSTART:20260715T080000Z
DTEND:20260715T090000Z
DTSTAMP:20260717T123700Z
UID:indico-event-19107@indico.psi.ch
CONTACT:andreas.elben@psi.ch\;cornelius.hempel@psi.ch
DESCRIPTION:Speakers: Kilian Seibold (Uni Konstanz)\n\nDriven nonlinear qu
 antum systems can exhibit metastability\, switching\, dissipative phase tr
 ansitions\, and rich nonequilibrium dynamical phases. However\, their fait
 hful theoretical description remains challenging: competing timescales\, q
 uantum fluctuations\, and dissipation often limit the validity of conventi
 onal approximations. Recent experiments\, especially in superconducting ci
 rcuits\, increasingly reach regimes where these limitations become directl
 y observable.\nIn this talk\, I will present a framework for Liouvillian d
 esign in driven nonlinear resonators\, combining reduced modeling with pha
 se-space and spectral tools to characterize metastability\, topology\, and
  control. First\, I will show how to construct effective Liouvillians adap
 ted to the drive and intrinsic nonlinearity. Representation-adapted Floque
 t theory minimizes residual micromotion\, while generalized master-equatio
 n methods reveal the dynamical dressing of dissipation by the drive and no
 nlinear response. These refinements are essential for quantitatively predi
 cting dissipative phase transitions\, multiphoton resonances\, metastable 
 lifetimes\, and Kerr-cat bit-flip rates.\nI will then show how Liouvillian
  mode tomography reveals a quantum topology of metastable dynamics beyond 
 Liouvillian gaps or topological indices. By resolving slow modes in phase 
 space\, it exposes attractor structure\, connectivity\, switching pathways
 \, and chirality. At the same time\, the left-right structure of Liouvilli
 an modes links these dynamical features to preparation and readout protoco
 ls\, providing an operational route to initialize\, detect\, and control m
 etastable quantum states.\nBased on\n- K. Seibold\, G. Villa\, J. del Pino
 \, and O. Zilberberg\, PRR. 8\, 023093 (2026)\n- C. Nowoczyn\, L. Mathey\,
  and K. Seibold\, arXiv:2605.24122 (2026)\n- J. Wagner\, J. Maki\, O. Zilb
 erberg\, and K. Seibold\, arXiv:2605.08021 (2026)\n- K. Seibold\, O. Ameye
 \, and O. Zilberberg\, PRL. 134\, 060401 (2025)\n\nhttps://indico.psi.ch/e
 vent/19107/
LOCATION:OSGA/EG6a
URL:https://indico.psi.ch/event/19107/
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