Dynamical Sweet Spot Engineering via Two-Tone Flux Modulation of Superconducting Qubits
Joseph A. Valery, Shoumik Chowdhury, Glenn Jones, Nicolas Didier
Abstract
Current superconducting quantum processors require strategies for coping with material defects and imperfect parameter targeting in order to scale up while maintaining high performance. To that end, in situ control of qubit frequencies with magnetic flux can be used to avoid spurious resonances. However, increased dephasing due to 1/f flux noise limits performance at all of these operating points except for noise-protected sweet spots, which are sparse under dc flux bias and monochromatic flux modulation.
Topics & Concepts
QubitPhysicsFlux qubitSuperconductivityComputer scienceElectronic engineeringQuantumQuantum mechanicsEngineeringQuantum and electron transport phenomenaQuantum Information and CryptographyPhysics of Superconductivity and Magnetism