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Department of Atomic Energy, Govt. of India
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Recent Seminar

Title              :

Cold atom simulation and thermalisation aspects of holographic quantum matter

Speaker         : Soumik Bandyopadhyay , University of Trento, Italy
Date                : January 02, 2025
Time               : 3:30 PM
Venue            : Seminar Room 363C
Abstract        :

Quantum simulation of strongly correlated quantum matter is a
challenging research topic with a wide range of applications across
various disciplines, including condensed matter physics, high-energy
physics, nuclear physics, and quantum gravity. In this presentation, we
shall discuss cold-atom quantum simulation schemes and the thermalisation
characteristics of strongly correlated many-body systems that exhibit
intriguing holographic and quantum chaotic properties. In the beginning,
we shall discuss our recent investigations of disordered, all-to-all
interacting cold atomic systems in optical cavity setups that have opened
a gateway for the quantum simulation of such models. Then, we shall
discuss the cavity QED implementation of the Sachdev-Ye-Kitaev (SYK)
model, which serves as the paradigmatic model for holographic quantum
matter. We shall learn about the model's intriguing out-of-equilibrium
universal dynamics. Towards this, our general theoretical methodology
reveals that the disorder-averaged unitary evolution can effectively be
described by a Lindbladian evolution. Furthermore, we shall understand the
eigenstate thermalisation hypothesis in non-Hermitian quantum systems by
considering the non-Hermitian incarnation of the SYK model as a testbed.
At the end, we shall briefly discuss how quantum chaos can be used as a
resource for quantum state designs, also known as deep thermalisation in
many-body quantum systems.

 

 

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