PreprintarXiv licencearXiv
Coherent control of spinmons
Abstract
In this work, we explore a hybrid qubit device where quantum information is encoded by quantum states of a transmon entangled with the spin of a trapped Andreev quasiparticle. We term such devices spinmons. We lift the spinmon Kramers degeneracy by introducing a Zeeman field and develop two routes for full qubit control via electrostatic gates and an AC flux drive, providing multiple directions for experimental implementations. Finally, we compute coherence times, verify the qubit robustness against flux, charge and gate voltage noise sources, and discuss the role of nuclear spin noise.
Related
- Plasmon-assisted coherent control of a four-level semiconductor quantum dot: operating window and fidelity limits
- Chiral Unidirectional Resonances Enabled by Complete Coherent Radiation Control
- Coherent control of subradiant excitations in atomic rings
- All-optical control of coherent perfect absorption via frequency conversion
- Optical Detection of Coherent Nuclear Spin Control in a Molecular System at Room Temperature
BibTeX
@misc{tjernshaugen2026coherent,
title = {{Coherent control of spinmons}},
author = {Johanne Bratland Tjernshaugen and Florinda Viñas Boström and Jeroen Danon and Jacob Linder and Karsten Flensberg and Antonio L. R. Manesco},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2605.12588},
eprint = {2605.12588},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2605.12588},
}
RIS
TY - UNPB
TI - Coherent control of spinmons
AU - Johanne Bratland Tjernshaugen
AU - Florinda Viñas Boström
AU - Jeroen Danon
AU - Jacob Linder
AU - Karsten Flensberg
AU - Antonio L. R. Manesco
PY - 2026
DA - 2026/10/29
PB - arXiv
DO - 10.48550/arxiv.2605.12588
UR - https://arxiv.org/abs/2605.12588
AB - In this work, we explore a hybrid qubit device where quantum information is encoded by quantum states of a transmon entangled with the spin of a trapped Andreev quasiparticle. We term such devices spinmons. We lift the spinmon Kramers degeneracy by introducing a Zeeman field and develop two routes for full qubit control via electrostatic gates and an AC flux drive, providing multiple directions for experimental implementations. Finally, we compute coherence times, verify the qubit robustness against flux, charge and gate voltage noise sources, and discuss the role of nuclear spin noise.
ER -