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Superconducting Qubits

Complementing the transmon by integrating a geometric shunt inductor

arXiv

Authors: Simone D. Fasciati, Boris Shteynas, Giulio Campanaro, Mustafa Bakr, Shuxiang Cao, Vivek Chidambaram, James Wills, Peter J. Leek

Year

2024

Paper ID

38152

Status

Preprint

Abstract Read

~2 min

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Abstract

We realize a single-Josephson-junction transmon qubit shunted by a simple geometric inductor. We couple it capacitively to a conventional transmon and show that the ZZ interaction between the two qubits is completely suppressed when they are flux-biased to have opposite-sign anharmonicities. Away from the flux sweet spot of the inductively-shunted transmon, we demonstrate fast two-qubit interactions using first-order sideband transitions. The simplicity of this two-qubit-species circuit makes it promising for building large lattices of superconducting qubits with low coherent error and a rich gate set.

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We realize a single-Josephson-junction transmon qubit shunted by a simple geometric inductor.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2410.10416 [2] arXiv https://arxiv.org/abs/2410.10416 [3] Publisher https://arxiv.org/abs/2410.10416

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