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CUBIT: Capacitive qUantum BIT

Vienna Center for Quantum Science and Technology, University of Vienna, 1090 Vienna, Austria
Received: 1 May 2018 / Revised: 17 June 2018 / Accepted: 25 June 2018 / Published: 2 July 2018
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In this letter, it is proposed that cryogenic quantum bits can operate based on the nonlinearity due to the quantum capacitance of two-dimensional Dirac materials, and in particular graphene. The anharmonicity of a typical superconducting quantum bit is calculated, and the sensitivity of quantum bit frequency and anharmonicity with respect to temperature are found. Reasonable estimates reveal that a careful fabrication process can reveal expected properties, putting the context of quantum computing hardware into new perspectives. View Full-Text
Keywords: graphene; two-dimensional materials; nonlinear quantum circuits; quantum bits graphene; two-dimensional materials; nonlinear quantum circuits; quantum bits

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Khorasani, S. CUBIT: Capacitive qUantum BIT. C 2018, 4, 39.

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