Fast magnetic flux control is a crucial ingredient for circuit quantum electrodynamics (cQED) systems. So far it has been a challenge to implement this technology with the high coherence 3D cQED architecture. In this paper we control the magnetic field inside a superconducting waveguide cavity using a magnetic hose, which allows fast flux control of 3D transmon qubits on time scales < 100 ns. The hose is designed as an effective microwave filter to not compromise the energy relaxation time of the qubit. The magnetic hose is a promising tool for fast magnetic flux control in various platforms intended for quantum information processing and quantum optics.
@article{arxiv.1811.10875,
title = {Fast flux control of 3D transmon qubits using a magnetic hose},
author = {O. Gargiulo and S. Oleschko and J. Prat-Camps and M. Zanner and G. Kirchmair},
journal= {arXiv preprint arXiv:1811.10875},
year = {2024}
}
Comments
9 pages, 7 figures, including supplementary material