CUBIT: Capacitive qUantum BIT

Sina Khorasani

doi:10.20944/preprints201805.0201.v1

Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Version 1 : Received: 13 May 2018 / Approved: 15 May 2018 / Online: 15 May 2018 (05:29:06 CEST)

In this letter, it is proposed that cryogenic quantum bits could 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 anharmonicty with respect to temperature are found. Reasonable estimates reveal that a careful fabrication process could reveal the expected properties, thus putting the context of quantum computing hardware into new perspectives.

graphene; two-dimensional materials; nonlinear quantum circuits; quantum bits

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CUBIT: Capacitive qUantum BIT

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