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Trapped Ion Quantum Computing

Bound state in the continuum and multiple atom state transfer applications in a waveguide QED setup

arXiv

Authors: Xiang Guo, Xiaojun Zhang, Mingzhu Weng, Qian Bin, Hao-di Liu, Hai-Jun Xing, Xin-You Lü, Zhihai Wang

Year

2025

Paper ID

16095

Status

Preprint

Abstract Read

~2 min

Abstract Words

104

Citations

N/A

Abstract

Bound states in the continuum (BICs) have been extensively exploited to enhance light--matter interactions in metamaterials, yet their emergence and utility in multi-atom waveguide platforms remain far less explored. Here we study atom--waveguide-dressed BICs in a one-dimensional coupled-resonator waveguide, where two spatially separated atomic arrays couple to distinct resonators with time-dependent strengths. We show that these BICs support a standing-wave photonic mode and enable the transfer of an arbitrary unknown quantum state between the two arrays with fidelities exceeding 99\%. The protocol remains robust against both disorder and intrinsic dissipation. Our results establish BICs as long-lived resources for high-fidelity quantum information processing in waveguide-QED architectures.

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Bound states in the continuum (BICs) have been extensively exploited to enhance light--matter interactions in metamaterials, yet their emergence and utility in multi-atom...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2512.06365 [2] arXiv https://arxiv.org/abs/2512.06365 [3] Publisher https://arxiv.org/abs/2512.06365

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