Pinto, DineshPaone, DomenicoKern, BastianDierker, TimWieczorek, RenéSingha, AparajitaDasari, DurgaFinkler, AmitHarneit, WolfgangWrachtrup, JörgKern, Klaus2023-06-282023-06-2820202041-17231852774193http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-ds-132697http://elib.uni-stuttgart.de/handle/11682/13269http://dx.doi.org/10.18419/opus-13250Atomic spins for quantum technologies need to be individually addressed and positioned with nanoscale precision. C60 fullerene cages offer a robust packaging for atomic spins, while allowing in-situ physical positioning at the nanoscale. However, achieving single-spin level readout and control of endofullerenes has so far remained elusive. In this work, we demonstrate electron paramagnetic resonance on an encapsulated nitrogen spin (14N@C60) within a C60 matrix using a single near-surface nitrogen vacancy (NV) center in diamond at 4.7 K. Exploiting the strong magnetic dipolar interaction between the NV and endofullerene electronic spins, we demonstrate radio-frequency pulse controlled Rabi oscillations and measure spin-echos on an encapsulated spin. Modeling the results using second-order perturbation theory reveals an enhanced hyperfine interaction and zero-field splitting, possibly caused by surface adsorption on diamond. These results demonstrate the first step towards controlling single endofullerenes, and possibly building large-scale endofullerene quantum machines, which can be scaled using standard positioning or self-assembly methods.eninfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/530article2023-05-16