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<p>Robust chirality is demonstrated by exploiting the merging of multiple accidental bound states in the continuum (BICs). This mechanism simultaneously sustains ultrahigh-quality factor <i>Q</i> resonances and strong chiroptical responses across a wide region of momentum space, achieving near-perfect circular dichroism (~0.99) and an ultrahigh-<i>Q</i> value (~10⁴) in a planar dielectric platform.</p>

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Robust chirality through merging BICs

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年4月23日

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  • Jue Li,
  • Haoye Qin,
  • Qinghua Song

摘要

Robust chirality is demonstrated by exploiting the merging of multiple accidental bound states in the continuum (BICs). This mechanism simultaneously sustains ultrahigh-quality factor Q resonances and strong chiroptical responses across a wide region of momentum space, achieving near-perfect circular dichroism (~0.99) and an ultrahigh-Q value (~10⁴) in a planar dielectric platform.