OIST Centre for Quantum Technologies (OCQT) Seminar

The OIST Center for Quantum Technologies (OCQT) is pleased to invite you to the next installment of the OCQT Seminar Series. This time, we are excited to host Dr. Javier Robledo Moreno, a Research Scientist at IBM Quantum (IBM T.J. Watson Research Center), who will deliver a talk entitled:

“On the Application of Quantum-Centric Supercomputing for Electronic Structure Problems”

Date and time

Friday, August 15, 2025 – 10:30 - 12:00

Location

Seminar Room D23 in Lab 5 (L5D23)

Abstract

We present quantum computations of electronic structure that go beyond problem sizes amenable to current state-of-the-art exact diagonalization methods. Our results are obtained in a quantum-centric supercomputing architecture, using classical resources to assist an IBM Heron quantum processor. We simulate the N2 triple bond breaking in a correlation-consistent basis set (cc-pVDZ), using 52 qubits and 5168 (1756 2-qubit) quantum gates, and the active-space electronic structure of [2Fe–2S] and [4Fe–4S] clusters, using 40 and 72 qubits respectively, with 3140 (1070) and 10540 (3560) quantum gates, as well as impurity models with up to four impurities and 28 bath sites using 64 qubits and up to 6000 2-qubit gates. We also discuss the probable efficient convergence of the method presented in this talk.

Biography

Javier is a Research Scientist at IBM Quantum, where his research specializes in quantum-centric supercomputing algorithms for the simulation of quantum many-body systems. Prior to his current appointment, Javier completed his PhD with a joint appointment at the Physics Department of New York University and the Flatiron Institute, where his research was focused on the application of machine learning techniques to the quantum many-body problem, under the supervision of Prof. Dries Sels, Prof. Antoine Georges and Prof. Giuseppe Carleo.