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Dynamics of local quantum information in random unitary circuits
Ratul Thakur, Sthitadhi Roy
The physics of information scrambling in quantum many-body systems is intimately related to thermalisation and emergence of chaos. However, its standard characterisation through bi…
Locality of deep thermalisation through the lens of entanglement teleportation
Saptarshi Mandal, Alan Sherry, Sthitadhi Roy
Deep thermalisation characterises the emergence of universal quantum state ensembles on subsystems due to projective measurements on their complement. We study the notion of locali…
Information phases of partial projected ensembles generated from random quantum states and scrambling dynamics
Alan Sherry, Saptarshi Mandal, Sthitadhi Roy
The projected ensemble -- an ensemble of pure states on a subsystem conditioned on projective measurement outcomes on its complement -- provides a finer probe of ergodicity and inf…
Partial projected ensembles and spatiotemporal structure of information scrambling
Saptarshi Mandal, Pieter W. Claeys, Sthitadhi Roy
Thermalisation and information scrambling in out-of-equilibrium quantum many-body systems are deeply intertwined: local subsystems dynamically approach thermal density matrices whi…
Imprints of information scrambling on eigenstates of a quantum chaotic system
Bikram Pain, Ratul Thakur, Sthitadhi Roy
How are the spatial and temporal patterns of information scrambling in locally interacting quantum many-body systems imprinted on the eigenstates of the system's time-evolution ope…
Do mixed states exhibit deep thermalisation?
Alan Sherry, Sthitadhi Roy
Deep thermalisation -- where ensembles of pure states on a local subsystem, conditioned on measurement outcomes on its complement, approach universal maximum-entropy ensembles -- r…