What is it about?
High-Q factor resonances are important in many applications in optics and photonics. We provide a general algebraic approach to study infinitely high-Q resonances (so-called bound states in the continuum - BICs) in systems of finite size. Non-trivial behavior of BICs such as annihilation and repulsion in parametric space is discussed.
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Why is it important?
The proposed approach provides a clear and illustrative way to describe properties of bound states in the continuum (BICs), and enhances the physical intuition into their properties. Our findings can be important in designing quantum mechanical and optical resonators in many areas of applications.
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This page is a summary of: Algebraic approach to annihilation and repulsion of bound states in the continuum in finite systems, Journal of Mathematical Physics, April 2023, American Institute of Physics,
DOI: 10.1063/5.0142892.
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