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Trapped Ion Quantum Computing

Current biased gradiometric flux qubit in a circuit-QED architecture

arXiv
Authors: Mun Dae Kim

Year

2021

Paper ID

40134

Status

Preprint

Abstract Read

~2 min

Abstract Words

114

Citations

N/A

Abstract

We propose a scheme for controlling the gradiometric flux qubit (GFQ) by applying an ac bias current in a circuit-QED architecture. The GFQ is insensitive to the magnetic flux fluctuations, which at the same time makes it challenging to manipulate the qubit states by an external magnetic field. In this study, we demonstrate that an ac bias current applied to the α-junction of the GFQ can control the qubit states. Further, the present scheme is robust against the charge fluctuation as well as the magnetic flux fluctuations, promising a long coherence time for quantum gate operations. We introduce a circuit-QED architecture to perform the single and two-qubit operations with a sufficiently strong coupling strength.

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  • This paper contributes to the Trapped-Ion Quantum Computing research area in the Quantum Articles archive.
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  • We propose a scheme for controlling the gradiometric flux qubit (GFQ) by applying an ac bias current in a circuit-QED architecture.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2112.14926 [2] arXiv https://arxiv.org/abs/2112.14926 [3] Publisher https://arxiv.org/abs/2112.14926

Local Citation Graph (Related-Paper Links)

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