5 papers
Geometric signatures of the onset of many-body ergodicity
Chris Ventura-Meinersen, Edmondo Valvo, Stefano Bosco +2
Identifying universal, robust, and interpretable signatures of the onset of ergodicity remains a major challenge. The adiabatic gauge potential has been noted to act as a sensitive…
g-tensor Optimization in Ge/SiGe Quantum Dots
Aram Shojaei, Edmondo Valvo, Maximilian Rimbach-Russ +2
Planar germanium heterostructures hosting hole-spin qubits are among the leading platforms for scalable semiconductor-based quantum computing. Yet, device performance is hindered b…
Probing Electrostatic Disorder via g-Tensor Geometry
Edmondo Valvo, Christian Ventura-Meinersen, Michele Jakob +3
Low-frequency charge noise induced by fluctuating electrostatic disorder is a major limitation for semiconductor hole spin qubits. Here, we analyze the quasistatic response of a ho…
Multi-level spectral navigation with geometric diabatic-adiabatic control
Christian Ventura-Meinersen, Edmondo Valvo, Stefano Bosco +1
We introduce a geometric framework for efficient few-parameter pulse optimization in multi-level quantum systems, enabling high-fidelity state transfer beyond the adiabatic limit.…
Electrically Tuneable Variability in Germanium Hole Spin Qubits
Edmondo Valvo, Michele Jakob, Patrick Del Vecchio +2
Hole spin qubits in planar germanium heterostructures are frontrunners for scalable semiconductor quantum computing. However, their current performance is mostly limited by large d…