Bulletin of the American Physical Society
APS March Meeting 2020
Volume 65, Number 1
Monday–Friday, March 2–6, 2020; Denver, Colorado
Session B17: Hybrid Systems - Electro-Optics, Superconductors, & Helium
11:15 AM–2:03 PM,
Monday, March 2, 2020
Room: 203
Sponsoring
Unit:
DQI
Chair: Joseph Kerckhoff, HRL Laboratories
Abstract: B17.00006 : A gate-tunable, field-compatible fluxonium*
Presenter:
Marta Pita-Vidal
(QuTech, Delft University of Technology)
Authors:
Marta Pita-Vidal
(QuTech, Delft University of Technology)
Arno Bargerbos
(QuTech, Delft University of Technology)
Chung-Kai Yang
(Quantum Lab Delft, Microsoft)
David J. Van Woerkom
(Quantum Lab Delft, Microsoft)
Wolfgang Pfaff
(Quantum Lab Delft, Microsoft)
Nadia Haider
(Netherlands Organisation for Applied Scientific Research (TNO)
Peter Krogstrup
(Quantum Materials Lab Copenhagen, Microsoft)
Leo P Kouwenhoven
(Quantum Lab Delft, Microsoft)
Gijs De Lange
(Quantum Lab Delft, Microsoft)
Angela Kou
(Quantum Lab Delft, Microsoft)
compatible fluxonium with an electrostatically-tuned semiconducting nanowire as its non-linear element. We demonstrate in-situ gate-control of the Josephson energy of the fluxonium over more than an order of magnitude. We also operate the fluxonium in magnetic fields up to 1T, where we observe the anomalous Josephson effect. This combination of gate-tunability and field-compatibility opens avenues for the exploration and control of spin-polarized phenomena using superconducting circuits and enables the use of the fluxonium as a readout device for topological qubits.
*Research co-funded by the allowance for Top consortia for Knowledge and Innovation (TKI’s) from the Dutch Ministry of Economic Affairs and the Microsoft Quantum initiative.
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