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arXiv · 1607.04019

Strong coupling between two spin ensembles via a large Josephson junction

Feng-Yang Zhang·Wenlin Li·Chui-Ping Yang
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Abstract

We propose a method to achieve strong coupling between a spin ensemble and a large Josephson junctions (LJJ). Then, the strong coupling between two spin ensembles can be induced by a LJJ. A non-adiabatic holonomic single-qubit quantum gates is realized. Moreover, with the dispersive interaction between the spin ensembles and the LJJ, the high-fidelity two-qubit phase gate can be implemented with two spin ensembles within an operation time 0.41 ns and $\pi$ phase-swap gate can be realized within an operation time 103.11 ns with a high fidelity greater than 99%.

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Feng-Yang Zhang, Wenlin Li, Chui-Ping Yang. 2016-07-14. Strong coupling between two spin ensembles via a large Josephson junction. https://arxiv.org/abs/1607.04019

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