MINES ParisTech CAS - Centre automatique et systèmes

Quantum information processing with superconducting circuits

Date : 07/04/2022 De 16h00 A 17h00

Alexandru Petrescu, CAS, Mines Paris

With rapid advances in fabrication, measurement, and control, superconducting circuits have become one of the leading architectures for quantum information processing. Yet, scaling such systems up towards practical applications poses remarkable challenges. In this talk, I pedagogically introduce the experimental platform, as well as some basics on quantum information processing, and then present some of the challenges. A strict requirement for these systems is to have fast, high-fidelity gate operations on quantum bits, as well as fast and high-fidelity state measurement. For theorists, this requires developing accurate models describing the complex dynamics of superconducting circuits under drives. I will touch upon some of my work on the subject regarding qubit measurement, and the control of pairs of quantum bits in order to realize a ultra-fast entangling gate.

Before joining CAS, Alexandru Petrescu was a postdoctoral fellow at the Institut Quantique, Université de Sherbrooke, working primarily with Prof. Alexandre Blais. Prior to that, he was a postdoctoral research associate in Prof. Hakan Türeci’s quantum optics group in Princeton. Between 2009 and 2015, he was a doctoral student in condensed matter theory in Prof. Karyn Le Hur's group at Yale and at the Ecole Polytechnique in Paris.