title: Semiconductor-inspired design principles for superconducting quantum computing.
abstract: Superconducting circuits offer tremendous design flexibility in the quantum regime culminating most recently in the demonstration of few qubit systems supposedly approaching the threshold for fault-tolerant quantum information processing. Competition in the solid-state comes from semiconductor qubits, where nature has bestowed some very useful properties which can be utilized for spin qubit-based quantum computing. Here we begin to explore how selective design principles deduced from spin-based systems could be used to advance superconducting qubit science. We take an initial step along this path proposing an encoded qubit approach realizable with state-of-the-art tunable Josephson junction qubits. Our results show that this design philosophy holds promise, enables microwave-free control, and offers a pathway to future qubit designs with new capabilities such as with higher fidelity or, perhaps, operation at higher temperature. The approach is also especially suited to qubits on the basis of variable super-semi junctions.
authors.affiliation: Laboratory for Physical Sciences, College Park, Maryland 20740, USA.|Department of Physics, University of Maryland, College Park, Maryland 20742, USA.
authors.forename: Yun-Pil
authors.identifier: http://orcid.org/0000-0002-5836-7847
authors.initials: YP
authors.lastname: Shim
authors.affiliation: Laboratory for Physical Sciences, College Park, Maryland 20740, USA.
authors.forename: Charles
authors.initials: C
authors.lastname: Tahan