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Prof. Arun K Pati

Prof. Arun K Pati gave a keynote talk on Quantum Speed Limit for States and Observables at the Plenary Session of the International Conference on Quantum Computing and Communications (QCC-2023) held from 9 – 11 February at Baba Farid Group of Institutions, Bathinda, Punjab.

Here is the summary of Prof. Patis’s talk in his words:

In the Schr{ö}dinger picture, the state of a quantum system evolves in time and the quantum speed limit describes how fast the state of a quantum system evolves from an initial state to a final state. However, in the Heisenberg picture the observable evolves in time instead of the state vector. Therefore, it is natural to ask how fast an observable evolves in time. This can impose a fundamental bound on the evolution time of the expectation value of quantum mechanical observables. We obtain the quantum speed limit time-bound for observable for closed systems, open quantum systems and arbitrary dynamics. We also discuss a stronger speed limit for state evolution.  Our results can have several applications ranging from setting the speed limit for operator growth, correlation growth, quantum thermal machines, quantum control and many more.

International Conference on Quantum Computing and Communications (QCC- 2023) bridged the gap between the science of Quantum and the development of an industry surrounding it. The objective of this conference is to bring together researchers, industry persons and government incumbents to discuss all aspects related to Quantum Computing and Communications.

QCC-2023 had contributions from the international quantum community to form an exceptional program by showcasing their cutting edge Research Technologies from Quantum Start-ups and Research Labs. It provided a platform for world-class keynote speakers, community-building workshops, technical papers, innovative posters, stimulating panels, and networking sessions.

Conference page – https://www.qcc2023.com/

February 2023