4 papers
Singlet-only always-on gapless exchange (SAGE) spin qubits: Charge noise effects and two-qubit gates
Nathan L. Foulk, Katharina Laubscher, Silas Hoffman +1
Singlet-only always-on gapless exchange (SAGE) spin qubits are an alternative type of exchange-only (EO) qubits that encode a single qubit in the spins of four electrons located in…
Predicting spin-orbit coupling in hole spin qubit arrays with vision-transformer-based neural networks on a generalized Hubbard model
Jacob R. Taylor, Katharina Laubscher, Sankar Das Sarma
We introduce a neural-network-based machine learning method to predict the effective spin-orbit coupling (SOC) strength in hole quantum dot arrays from standard charge stability di…
Andreev spin qubits bound to Josephson vortices in spin-orbit coupled planar Josephson junctions
Katharina Laubscher, Valla Fatemi, Jay D. Sau
We propose a variant of Andreev spin qubits (ASQs) defined in planar Josephson junctions based on spin-orbit coupled two-dimensional electron gases (2DEGs) in a weak out-of-plane m…
Fast readout of quantum dot spin qubits via Andreev spins
Michèle Jakob, Katharina Laubscher, Patrick Del Vecchio +3
Spin qubits in semiconducting quantum dots are currently limited by slow readout processes, which are orders of magnitude slower than gate operations. In contrast, Andreev spin qub…