Docent lecture, Axel Eriksson

Abstract:
There is plenty of room in higher dimensions. Compared with qubit-based systems, bosonic modes provide access to much larger Hilbert spaces, enabling hardware-efficient encoding for quantum error correction as well as natural representations for the simulation of bosonic systems. Key experimental challenges for superconducting bosonic modes lie in designing physical hardware that provides the nonlinearities required for quantum operations while suppressing unwanted dynamics. Moreover, as quantum processors reach regimes beyond classical simulatability, an important question emerges: how can we establish trust in computational results that cannot be directly verified classically? In this lecture, I will give an overview of quantum information processing in superconducting bosonic modes and highlight some of our experimental contributions to the field.