Quantum Centers in Diamond (QUEEN)

2022–2026

Nitrogen-vacancy (NV) pair is one of the most stable defect configurations in diamond that holds anelectronic spin that can be manipulated. As a consequence, it remains one of the top candidates forquantum technologies. NV pairs have also been in biomedicine for concurrent drug delivery and biomedicalimaging. However, not much is known about the structural details of the dopant distribution within thediamond lattice or on the effect of different dopant concentrations on the diamond electronic structure.Naturally, also the correlation between structural and electronic properties is also missing. Thus, in order tooptimize technological procedures, advanced analytic techniques and theoretical approaches are needed tounderstand the structural configurations, interactions and processes within the doped diamond crystals. Inthis project, we will create diamond structures with different dopants, study the atomic structure of the impurity sites and correlate it with their properties for providing new information and solutions for quantum applications.

Funder: Austrian Science Fund

Project identifier: P34797-N36

Principal investigator: J. Kotakoski

Project publications

2024

Lucherelli, M. A., Stiegler, L. M. S., Steiger, F., Åhlgren, E. H., Requena-Ramírez, J., Castro, E., Echegoyen, L., Hirsch, A., Peukert, W., Kotakoski, J., Walter, J., Pérez-Ojeda, M. E., & Abellán, G. (2024). Carbon nano-onions: Individualization and enhanced water dispersibility. Carbon, 218, [118760]. https://doi.org/10.1016/j.carbon.2023.118760

Längle, M., Mizohata, K., Mangler, C., Trentino, A., Mustonen, K., Åhlgren, E. H., & Kotakoski, J. (2024). Two-dimensional few-atom noble gas clusters in a graphene sandwich. Nature Materials. https://doi.org/10.48550/arXiv.2306.15436, https://doi.org/10.1038/s41563-023-01780-1

Adžić, N., Jochum, C., Likos, C. N., & Stiakakis, E. (Accepted/In press). Engineering Ultrasoft Interactions in Stiff All-DNA Dendrimers by Site-Specific Control of Scaffold Flexibility. Small, [2308763]. https://doi.org/10.1002/smll.202308763

2023

Propst, D., Kotakoski, J., & Ahlgren, E. H. (2023). Impurity atom configurations in diamond and their visibility via scanning transmission electron microscopy imaging. Electronic Structure, 5(3), [033004]. https://doi.org/10.1088/2516-1075/acf9d3