Author(s): Ma, WL (Ma, Wen-Long); Puri, S (Puri, Shruti); Schoelkopf, RJ (Schoelkopf, Robert J.); Devoret, MH (Devoret, Michel H.); Girvin, SM (Girvin, S. M.); Jiang, L (Jiang, Liang)

Source: SCIENCE BULLETIN Volume: 66 Issue: 17 Pages: 1789-1805 DOI: 10.1016/j.scib.2021.05.024 Published: SEP 15 2021

Abstract: Bosonic modes have wide applications in various quantum technologies, such as optical photons for quantum communication, magnons in spin ensembles for quantum information storage and mechanical modes for reversible microwave-to-optical quantum transduction. There is emerging interest in utilizing bosonic modes for quantum information processing, with circuit quantum electrodynamics (circuit QED) as one of the leading architectures. Quantum information can be encoded into subspaces of a bosonic superconducting cavity mode with long coherence time. However, standard Gaussian operations (e.g., beam splitting and two-mode squeezing) are insufficient for universal quantum computing. The major challenge is to introduce additional nonlinear control beyond Gaussian operations without adding significant bosonic loss or decoherence. Here we review recent advances in universal control of a single bosonic code with superconducting circuits, including unitary control, quantum feedback control, drivendissipative control and holonomic dissipative control. Various approaches to entangling different bosonic modes are also discussed. (c) 2021 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.

Accession Number: WOS:000693458400013

ISSN: 2095-9273

eISSN: 2095-9281

Full Text: https://www.sciencedirect.com/science/article/pii/S2095927321004011?via%3Dihub