SEMINAR+WEBINAR ANNOUNCEMENT: “First steps in application of quantum computing to the study of dynamics and structure of many-body systems”

SEMINAR+WEBINAR ANNOUNCEMENT
Tuesday, 8th of November 2022 at 11:30
UPC campus nord, B4-212 (aula seminari)
https://meet.google.com/whq-mkve-aja

Francesco Pederiva

University of Trento, Physics Department, and INFN-TIFPA

“First steps in application of quantum computing to the study of dynamics and structure of many-body systems”

Abstract
The recent advancement in quantum technologies has provided the possibility to start experimenting with realistic quantum computing. At present only relatively small systems can be simulated, due to the noise that still affects existing machines. On the other hand, one can start exploring problems that exploit the fundamental feature of such machines, i.e. the possibility of evolving in real time highly correlated states in a time that grows less than exponentially with the dimensionality of the Hilbert space. I will overview two examples that constitute proofs of concept for forthcoming algorithms. The first is an attempt to describe the two-neutron scattering with a simple interaction model that contains a spin-dependent Hamiltonian, and in which quantum computing is used to describe the time evolution of the spin state of the neutrons along the reaction path. The second is an algorithm that turns real time evolution into an imaginary time one by extending the Hilbert space with a "reservoir" and implementing a dynamical cooling process.