Speaker
Mr.
Noel Garcia
(International Iberian Nanotechnology Laboratory)
Description
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)
