Speaker: Peter Zoller
Title: Bounded-Error Quantum Simulation via Hamiltonian and Liouvillian Learning
Abstract: We present both theoretical and trapped-ion experimental results on analog quantum simulation, focusing on two key aspects: (i) a black-box learning approach for reconstructing the many-body Hamiltonian and Liouvillian, and (ii) a method to derive guaranteed error bounds for observables during quench dynamics, using experimental data alone. This framework contributes to the advancement of quantum simulation with certifiable precision on NISQ and digital devices, and is, in principle, applicable within regimes where quantum advantage can be realized.
Speaker: Charles Fromonteil
Title: Nonlocal mass superpositions in large-distance quantum sensor networks
Abstract: Recent advances in quantum information and communication hold great promise for probing fundamental physics effects. While the interplay between general relativity and quantum mechanics has been explored on small scales with optical atomic clocks, probing these effects for large distances and large masses remains a challenge. In this talk, I will discuss our work on using large-distance quantum sensor networks of atom ensembles to emulate atomic clock interferometry experiments. For this, we introduce a nonlocal Ramsey interferometry protocol based on the generation and manipulation of nonlocal superpositions of mass/energy. I will show how to engineer such states using variational circuits, and illustrate how this allows us to probe gravity-induced dynamics through several examples.
The Physics Frontiers Centers (PFC) program supports university-based centers and institutes where the collective efforts of a larger group of individuals can enable transformational advances in the most promising research areas. The program is designed to foster major breakthroughs at the intellectual frontiers of physics by providing needed resources such as combinations of talents, skills, disciplines, and/or specialized infrastructure, not usually available to individual investigators or small groups, in an environment in which the collective efforts of the larger group can be shown to be seminal to promoting significant progress in the science and the education of students. PFCs also include creative, substantive activities aimed at enhancing education, broadening participation of traditionally underrepresented groups, and outreach to the scientific community and general public.