Author

J. P. Kestner

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Preprint Aug 2026

Noise-Robust Spin-Orbit Qubit in Germanium Holes via p-Orbital Encoding

Germanium hole spin qubits are a leading platform for semiconductor quantum computation due to their strong spin-orbit coupling, all-electrical operability, and absence of valley degeneracy. A central obstacle is charge noise, which couples to the qubit through the same spin-orbit interaction that enables fast electric...

Yasuo Oda, J. P. Kestner · 0 citations

Preprint Jul 2026

Qubit encodings in the p-orbital-valley spectrum for enhanced coherence and tunable two-qubit interaction

We propose encoding a qubit in a two-level subspace spanned by the lowest $p$-orbital state in the excited valley of an anisotropic quantum dot and the excited $p$-orbital in the ground valley, which we dub the $pOv$ qubit. There is an avoided crossing between these states due to valley-orbit coupling (VOC) induced by...

John H. Caporaletti, J. P. Kestner · 1 citation