Universal quantum computer based on Carbon Nanotube Rotators

Abstract

We propose a universal quantum computer based on a chain of carbon nanotube rotators where one metallic plate is attached to each rotator. The dynamical variable is the rotational angle $\varphi$. The attached plate connected to ground electrostatically interacts with two fixed plates. Two angle positions $\varphi =0,\pi$ are made stable by applying a voltage difference between the attached plate and the two fixed plates. We assign $\varphi =0$ and $\pi$ to the qubit states $|0⟩$ and $|1⟩$. Then, considering a chain of rotators, we construct the arbitrary phase-shift gate, the NOT gate and the Ising gate, which constitute a set of universal quantum gates. They are executed by controlling the voltage between various plates.

7 pages, 5 figures

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• Skyrmion Qubits: A New Class of Quantum Logic Elements Based on Nanoscale Magnetization
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Cited by in corpus (1)

• Universal quantum computing based on magnetic domain wall qubits