Using materials for quasiparticle engineering

Abstract

The fundamental excitations in superconductors - Bogoliubov quasiparticles - can be either a resource or a liability in superconducting devices: they are what enables photon detection in microwave kinetic inductance detectors, but they are a source of errors in qubits and electron pumps. To improve operation of the latter devices, ways to mitigate quasiparticle effects have been devised; in particular, combining different materials quasiparticles can be trapped where they do no harm and their generation can be impeded. We review recent developments in these mitigation efforts and discuss open questions.

11 pages, 2 figures

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Cited by in corpus (8)

• Engineering superconducting qubits to reduce quasiparticles and charge noise
• Single Flux Quantum-Based Digital Control of Superconducting Qubits in a Multi-Chip Module
• A Cooper-Pair Box Coupled to Two Resonators: An Architecture for a Quantum Refrigerator
• Dynamical phases transitions in periodically driven Bardeen-Cooper-Schrieffer systems
• Suppression of non-equilibrium quasiparticle transport in flat band superconductors
• Nonequilibrium quasiparticle distribution in superconducting resonators: analytical approach
• Quasiparticle poisoning in trivial and topological Josephson junctions
• Electron-phonon heat transfer in giant vortex states