Modeling and testing novel quasiparticle traps on superconducting qubits via geometric gap engineering
ORAL
Abstract
Non-equilibrium quasiparticles have been identified as a major decoherence source in su-
perconducting qubits. Strategies to mitigate the quasiparticle loss are highly demanded. We
propose an improved microscopic model of quasiparticle diffusion that is not constrained to
equilibrium energies. Based on this model, we explore new qubit architectures and demon-
strate the improvement of qubit relaxation and dephasing times.
perconducting qubits. Strategies to mitigate the quasiparticle loss are highly demanded. We
propose an improved microscopic model of quasiparticle diffusion that is not constrained to
equilibrium energies. Based on this model, we explore new qubit architectures and demon-
strate the improvement of qubit relaxation and dephasing times.
*This material is based upon work supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Centers, Superconducting Quantum Materials and Systems Center (SQMS) under contract number DE-AC02-07CH11359.
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Presenters
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Ugur Alyanak
- Fermilab, University of Chicago