Fast flux control of 3D transmon qubits using a magnetic hose
Abstract
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 flux control of 3D transmon qubits on time scales less than 100 ns while maintaining a cavity quality factor larger than 106. The magnetic 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.
- Publication:
-
Applied Physics Letters
- Pub Date:
- January 2021
- DOI:
- 10.1063/5.0032615
- arXiv:
- arXiv:1811.10875
- Bibcode:
- 2021ApPhL.118a2601G
- Keywords:
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- Quantum Physics;
- Condensed Matter - Superconductivity
- E-Print:
- 9 pages, 7 figures, including supplementary material