主持人：章一奇 特聘研究员

联系人：傅琦 (fuqi@iphy.ac.cn)

Abstract：

Nuclear spin states in molecules will be proposed to act as quantum registers for Quantum Computing (QC). The synthetic engineering of the nuclear spin degree of freedom in lanthanide molecules will be shown with the goal to make the respective isotopologue complexes accessible as quantum registers in quantum protocols [1-2]. Therefore, we report on the implementation of lanthanide (III) metal complexes into spintronic and optical devices. The Hilbert space spanned by the nuclear spins in different ᴬLn(III) isotopologues will be addressed electrically [3-11] and optically [12-14], partially at the single-molecule level. Grover search algorithm will be implemented into a single ¹⁵⁹TbPc₂ molecular qudit [10]. Moreover, a main motivation is to realize long-sought coherent photon-nuclear-spin interfaces for superposition and entanglement of larger qubit ensembles, even non-locally distributed [12,13]. The first-time observation of an optically detected Nuclear Magnetic Resonance (OD-NMR) experiment in a ¹⁵¹Eu(III) complex will be reported [14].

References:

[1] S. Kyatskaya et. al. J. Am. Chem. Soc. 2009, 131, 15143-15151.
[2] M. Urdampilleta et al. Nature Mater. 2011, 10, 502-506.
[3] J. Schwöbel et. al. Nature Comms. 2012, 3, 953-956.
[4] R. Vincent et al. Nature 2012, 488, 357-360.
[5] M. Ganzhorn et al. Nature Nano. 2013, 8, 165–169.
[6] M. Ruben et. al. Nature Nano. 2013, 8, 377–389.
[7] S. Wagner et. al. Nature Nano. 2013, 8, 575–579.
[8] S. Thiele, et al. Science 2014, 344, 1135-1138.
[9] M. Ganzhorn, et. al. Nature Comms 2016, 7, 11443.
[10] C. Godfrin et al. PRL 2017, 119, 187702 (perspective article by A. Morello Nature Nano 2018, 13 ,9-10).
[11] H. Biard et. al. Nature Comms 2021, 12, 4443.
[12] S. Kuppusamy et. al. Nature Comms 2021, 12, 2152.
[13] D. Serrano et al. Nature 2022, 603, 241.
[14] E. Vasiliev et al. Nature Mater. 2026, doi.org/10.1038/s41563-026-02539-0

Brief CV of Mario Ruben：

Mario Ruben obtained his Ph.D. in 1998 from the University of Jena, Germany. During a DAAD post-doctoral fellowship, he worked in the research group of the Nobel Prize Winner Prof. J.-M. Lehn at the ISIS in Strasbourg, France. In 2001, he moved to the Institute of Nanotechnology in Karlsruhe and in 2010, he accepted a position as Professor at the University de Strasbourg, France. In 2013, he became Full Professor for Molecular Materials at the Institutes of Inorganic Chemistry and of Nanotechnology at the KIT. His research interests involve the design, synthesis, and physical characterization of functional molecules and their implementation and integration into operational nanosystems for molecular spintronic and quantum devices. Since 2026, he is holding an ERC Advanced Grant. He published more than 340 papers with an H-index of 81 (Google Scholar).