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arXiv · 1507.00069

Quantum state transfer and controlled-phase gate on one-dimensional superconducting resonators assisted by a quantum bus

Ming Hua·Ming-Jie Tao·Fu-Guo Deng
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Abstract

We propose a quantum processor for the scalable quantum computation on microwave photons in distant one-dimensional superconducting resonators. It is composed of a common resonator R acting as a quantum bus and some distant resonators $r_j$ coupled to the bus in different positions assisted by superconducting quantum interferometer devices (SQUID), different from previous processors. R is coupled to one transmon qutrit, and the coupling strengths between $r_j$ and R can be fully tuned by the external flux through the SQUID. To show the processor can be used to achieve universal quantum computation effectively, we present a scheme to complete the high-fidelity quantum state transfer between two distant microwave-photon resonators and another one for the high-fidelity controlled-phase gate on them. By using the technique for catching and releasing the microwave photons from resonators, our processor may play an important role in quantum communication as well.

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Ming Hua, Ming-Jie Tao, Fu-Guo Deng. 2016-02-11. Quantum state transfer and controlled-phase gate on one-dimensional superconducting resonators assisted by a quantum bus. https://arxiv.org/abs/1507.00069

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