17-21 July 2017
Santiago de Compostela, Facultade de Química
Europe/Madrid timezone

Graphene based nuclear spin quantum bits

19 Jul 2017, 17:45
Aula Química Inorgánica (Facultad de Química (USC))

Aula Química Inorgánica

Facultad de Química (USC)

Quantum Materials and Technologies (GEFES) Quantum Materials and Technologies (GEFES) II


Mr. Noel Garcia (International Iberian Nanotechnology Laboratory)


In this work, we study the possibility of hydrogenated graphene based Qubits. The chemisorption of hydrogen in graphene provides a nuclear spin 1/2 as well as the localization of an electron in the vicinity of the adatom, very much like in the Qubits based on P donors in Si[1-4]. The possibility to control with atomic precision the chemisorption of hydrogen[5], along with the high tunability of the electronic properties of graphene (and graphene nano-structures)[6], offers a great tool to control the interactions in the system allowing to perform single and two-qubit operations. We use a 4 orbital tight-binding model in the Slater-Koster approximation, validated with DFT calculations, to explore the tunability of the interactions and the feasibility of these ideas. [1] B. E. Kane, Nature 393, 133-137 (1998) [2] A. Morello, et al Nature 467, 687–691 (2010) [3] M. Veldhorst, et al, Nature Nanotechnology 9, 981–985 (2014) [4] J. P. Dehollain, et al, Nature Nanotechnology 9, 986–991 (2014) [5] H. González-Herrero, et al, Science 352, 437 (2016) [6] Y. Zhang, et al, Nature, 459, 820–823 (2009)

Primary author

Mr. Noel Garcia (International Iberian Nanotechnology Laboratory)

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