Entanglement between a muon spin and $I>\frac{1}{2}$ nuclear spins
Materials Science
2022-10-17 v1
Abstract
We report on the first example of quantum coherence between the spins of muons and quadrupolar nuclei. We observe this effect in vanadium intermetallic compounds which adopt the A15 crystal structure, and whose members include all technologically dominant superconductors. The entangled states are extremely sensitive to the local structural and electronic environments through the electric field gradient at the quadrupolar nuclei. This case-study demonstrates that positive muons can be used as a quantum sensing tool to probe also structural and charge related phenomena in materials, even in the absence of magnetic order.
Keywords
Cite
@article{arxiv.2202.13742,
title = {Entanglement between a muon spin and $I>\frac{1}{2}$ nuclear spins},
author = {Pietro Bonfà and Jonathan Frassineti and John M. Wilkinson and Giacomo Prando and Muhammad M. Isah and Chennan Wang and Tiziana Spina and Boby Joseph and Vesna Mitrović and Roberto De Renzi and Stephen J. Blundell and Samuele Sanna},
journal= {arXiv preprint arXiv:2202.13742},
year = {2022}
}