Encoding quantum bits in bound electronic states of a graphene nanotorus

We propose to use the quantum states of an electron trapped on the inner surface of a graphene nanotorus to realize as a new kind of physical quantum bit, which can be used to encode quantum information. Fundamental tasks for quantum information processing, such as the qubit initialization and the i...

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Bibliographic Details
Published in:Annals of physics 2025-01, Vol.472, p.169862, Article 169862
Main Authors: Furtado, J., Ramos, A.C.A., Silva, J.E.G., Bachelard, R., Santos, Alan C.
Format: Article
Language:English
Subjects:
Curved surfaces
Nanotorus
Quantum bits
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Summary:We propose to use the quantum states of an electron trapped on the inner surface of a graphene nanotorus to realize as a new kind of physical quantum bit, which can be used to encode quantum information. Fundamental tasks for quantum information processing, such as the qubit initialization and the implementation of arbitrary single qubit gates, can then be performed using external magnetic and electric fields. We also analyze the robustness of the device again systematic errors, which can be suppressed by a suitable choice of the external control fields. These findings open new prospects for the development an alternative platform for quantum computing, the scalability of which remains to be determined.
ISSN:0003-4916
DOI:10.1016/j.aop.2024.169862