QSI Seminar: Dr Namit Anand (NASA Quantum AI Lab and KBR)

quantum entanglement

On Wed 10 April, Dr Namit Anand (Scientist at the NASA Quantum AI Lab and KBR) will present an overview of recent work on information-theoretic aspects of scrambling and chaos. Image: AdobeStock.

Information-theoretic aspects of scrambling and chaos

SPEAKER: Dr Namit Anand

AFFILIATION: Staff Scientist at NASA Quantum AI Lab and KBR.

BIO: Dr Namit Anand obtained his PhD in Physics in 2022 from the University of Southern California under the supervision of Paolo Zanardi (and was co-advised by Todd Brun and Aaron Lauda). His research focuses on the application of quantum information-theoretic tools to study many-body phenomena such as thermalization in closed quantum systems, quantum chaos, and information scrambling. He has also worked on quantum resource theories, non-universal models of quantum computation, and classical shadow tomography.

ABSTRACT: The goal of this seminar is to provide an overview of our recent work. We will discuss connections between operator entanglement of unitary dynamics, OTOCs, and entropy production as introduced in [1]. Then we will discuss how to 'disentangle' contributions from decoherence vs. scrambling for open quantum systems [2]. How finite temperature 'regularized' OTOCs are related to spectral form factors and the entanglement of the time-evolved thermofield double state [3]. An intermezzo about the connection between the quantum coherence-generating power of a unitary and OTOCs of random diagonal unitaries [4]. A quick overview of an operator algebraic framework for scrambling that is useful for both closed and open quantum systems [5]. And finally how OTOCs behave in local non-Hermitian Hamiltonians (effective models for measurement-induced phase transitions) [6].

[1] https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.030601
[2] https://journals.aps.org/pra/abstract/10.1103/PhysRevA.103.062214
[3] https://quantum-journal.org/papers/q-2022-06-27-746/
[4] https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.023214
[5] https://journals.aps.org/pra/abstract/10.1103/PhysRevA.107.042217
[6] https://journals.aps.org/prb/abstract/10.1103/PhysRevB.108.134305

HOSTED BY: Dr Sam Elman, Centre for Quantum Software and Information, University of Technology Sydney, Australia

Back to QSI Seminars & Events
Acknowledgement of Country

UTS acknowledges the Gadigal people of the Eora Nation, the Boorooberongal people of the Dharug Nation, the Bidiagal people and the Gamaygal people, upon whose ancestral lands our university stands. We would also like to pay respect to the Elders both past and present, acknowledging them as the traditional custodians of knowledge for these lands.