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Superconducting Qubits Quantum Simulation

Superfluid-Mott-insulator transition in superconducting circuits with weak anharmonicity

arXiv
Authors: Li-Li Zheng, Ke-Min Li, Xin-You Lü, Y. Wu

Year

2017

Paper ID

24413

Status

Preprint

Abstract Read

~2 min

Abstract Words

96

Citations

N/A

Abstract

We investigate theoretically the ground-state property of a two-dimensional array of superconducting circuits including the on-site superconducting qubits (SQs) with weak anharmonicity. In particular, we analyse the influence of this anharmonicity on the Mott insulator to superfluid quantum phase transition. The complete ground-state phase diagrams are presented under the mean field approximation. Interestingly, the anharmonicity of SQs affects the Mott lobes enormously, and the single excitation Mott lobe disappears when the anharmonicity become zero. Our results can be used to guide the implementations of quantum simulations using the superconducting circuits, which have nice integrating and flexibility.

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  • We investigate theoretically the ground-state property of a two-dimensional array of superconducting circuits including the on-site superconducting qubits (SQs) with weak...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1712.06759 [2] arXiv https://arxiv.org/abs/1712.06759 [3] Publisher https://arxiv.org/abs/1712.06759

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