A5083972339- Quantum and electron transport phenomena
- Quantum Information and Cryptography
- Physics of Superconductivity and Magnetism
- Quantum Computing Algorithms and Architecture
- Cold Atom Physics and Bose-Einstein Condensates
Universidad Autónoma de Madrid
2023-2025
Excess quasiparticles play a crucial role in superconducting quantum devices ranging from qubits to sensors. In this work we analyze their dynamics for phase-biased finite-length weak links with several Andreev subgap states, where the coupling microwave resonator allows parity state (even/odd) readout. Our theory shows that almost perfect dynamical polarization given sector is achievable by applying pulse matching transition opposite sector. results qualitatively explain key features of...
We study active steering protocols for weakly measured qubits in the presence of error channels due to amplitude and phase noise. If rate is sufficiently small, protocol approaches stabilizes a predesignated pure target state with high fidelity purity, thus implements autonomous stabilization. present numerical simulation results one two qubits, taking Andreev qubit circuits as an example. As function rate, sharp threshold separates error-correcting weak-damping regime from strong-damping...
We study active steering protocols for weakly measured qubits in the presence of error channels due to amplitude and phase noise. If rate is sufficiently small, protocol approaches stabilizes a predesignated pure target state with high fidelity purity, thus implements autonomous stabilization. present numerical simulation results one two qubits, taking Andreev qubit circuits as example. As function rate, sharp threshold separates an error-correcting weak-damping regime from strong-damping...
Excess quasiparticles play a crucial role in superconducting quantum devices ranging from qubits to sensors. In this work we analyze their dynamics for phase-biased finite-length weak links with several Andreev subgap states, where the coupling microwave resonator allows parity state (even/odd) readout. Our theory shows that almost perfect dynamical polarization given sector is achievable by applying pulse matching transition opposite sector. results qualitatively explain key features of...