Berlin 2018 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 34: Carbon: Diamond, nanotubes, Buckyballs

HL 34.2: Vortrag

Donnerstag, 15. März 2018, 09:45–10:00, EW 015

Buckyball spin networks controlled using qubits in diamond — •Dinesh Pinto1,2, Domenico Paone1, Lukas Schlipf1, Bastian Kern1, Markus Ternes1, Amit Finkler3, Jörg Wrachtrup1,2, and Klaus Kern1,41Max Planck Institute for Solid State Research, D-70569 Stuttgart, Germany — 23. Physikalisches Institut, Universität Stuttgart, D-70569 Stuttgart, Germany — 3Department of Biological and Chemical Physics, Weizmann Institute of Science, Rehovot 7610001, Israel — 4Institut de Physique de la Matière Condensée, École Polytechnique Fédérale de Lausanne, CH-1015 Lausanne, Switzerland

The nitrogen vacancy (NV) center in diamond is a model single qubit. It can be optically initialized, coherently controlled and read out. However, controlling multi-qubit NV systems can be challenging as their distribution is generally stochastic. Molecular spin systems, especially N@C60 (atomic nitrogen inside C60), show great promise for quantum technologies: single endohedral nitrogen spins have long coherence times, and the scalability of fullerene networks allows for construction of complex nanoscale devices [1]. Coupling N@C60 and single NV spins at ultra-high vacuum and cryogenic temperatures allowed us to observe the hyperfine splitting of endohedral nitrogen, which we used to implement quantum gate operations. Another possibility is the emergence of discrete time-crystalline order [2] in our disordered and strongly interacting molecular network.

1. Benjamin, S. C. et al. J. Phys-Condens. Mat. 18, S867 (2006).

2. Choi, S. et al. Nature 543, 221-225 (2017).

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