Doubly nonlinear superconducting qubit

Dat Thanh Le, 2, ∗ Arne Grimsmo, Clemens Müller, 4 and T. M. Stace † ARC Centre for Engineered Quantum System, Department of Physics, University of Queensland, Brisbane, QLD 4072, Australia Thang Long Institute of Mathematics and Applied Sciences (TIMAS), Thang Long University, Nghiem Xuan Yem, Hoang Mai, Hanoi 10000, Vietnam ARC Centre for Engineered Quantum Systems, School of Physics, The University of Sydney, Sydney, NSW 2006, Australia IBM Research Zurich, 8803 Rüschlikon, Switzerland