Bound States in the Continuum in Compact Acoustic Resonators

Deriy, Ilya; Toftul, Ivan; Петров, М. И.; Bogdanov, Andrey

doi:10.1103/physrevlett.128.084301

Cited by 52 publications

(10 citation statements)

References 40 publications

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“…[283][284][285][286] Today, the physics of BICs is developing in acoustics. 20,[287][288][289] BICs are an illustrative example of how an idea suggested in one area of physics a century ago today affects many other fields and is already used in multiple practical applications.…”

Section: Discussionmentioning

confidence: 99%

“…26 Until recently, it was believed that the only exception is the structures surrounded by a completely opaque shell providing the decoupling of the internal resonances from the outside radiation continuum, which in quantum mechanics corresponds to an infinite potential barrier, in acoustics to hard-wall boundaries, and in optics to perfectly conducting walls or epsilon-near-zero barriers. 62,63 One more exception from the 'non-existence' theorem was found in, 64 where the authors revealed that finite-size solid acoustic resonators can support genuine BICs completely localized inside the resonator. Despite possible exceptions from the 'nonexistence' theorem, the BICs are usually formedin structures with a finite number of scattering channels.…”

Section: Bic and Diffraction Ordersmentioning

confidence: 99%

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Bound states in the continuum in photonic structures

et al. 2021

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Bound states in the continuum provide a remarkable example of how a simple problem solved about a century ago in quantum mechanics can drive the research on a whole spectrum of resonant phenomena in wave physics. Due to their huge radiative lifetime, bound states in the continuum have found multiple applications in various areas of physics devoted to wave processes, including hydrodynamics, atomic physics, and acoustics. In this review paper, we present a comprehensive description of bound states in the continuum and related effects, focusing mainly on photonic dielectric structures. We review the history of this area, basic physical mechanisms in the formation of bound states in the continuum, and specific examples of structures supporting such states. We also discuss their possible applications in optics, photonics, and radiophysics.

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Section: Discussionmentioning

confidence: 99%

Section: Bic and Diffraction Ordersmentioning

confidence: 99%

Bound states in the continuum in photonic structures

et al. 2021

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“…[34][35][36] Limited by the broken symmetry in finite nanostructures, these approximately orthogonal cavity modes cannot realize a complete destructive interference, only leading to the generation of quasi-BICs with finite Q-factors. Recently, polarization-protected [37] and longitudinal monopole-type [38] BICs were found in single-particle systems, while the former is limited to acoustic systems and the latter need to consider nonlocal effects and ignore material losses. Therefore, realizing true BICs in finite systems has been a challenging task, which, however, is significant for implementing BIC-based devices with a compact size.…”

Section: Doi: 101002/adom202201590mentioning

confidence: 99%

Plasmonic Bound States in the Continuum in Compact Nanostructures

Zhou

Liu

et al. 2022

Advanced Optical Materials

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Optical bound states in the continuum (BICs) have become a unique way to produce the extreme localization and enhancement of light waves, however, it remains challenging to realize them in single‐particle systems. This work shows the existence of optical BICs in a compact corrugated metallic cylinder, and quasi‐BICs are observed in multiple channels when adjacent grooves have different depths. It is revealed that such BICs are purely plasmonic, resulting from the destructive interference of two localized surface plasmon modes in the nanostructures. Benefiting from the surface plasmon effects, the findings extend optical BICs and the associated physics to subwavelength optics, providing a route to break the diffraction limit and boost light–matter interactions.

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“…For instance, Hwang et al employed the concept of a supercavity mode created by merging symmetry-protected and accidental BICs in momentum space and realizing an efficient laser based on a finite-size cavity [17]. BICs have applications as high-Q building blocks for acoustic sensors, antennas, and topological acoustic structures [18]. Another example of the technological utility of BICs is the work of Mao et al, in which quasi-BIC magnetic resonance was shown to improve the chiral lateral force on the paired enantiomers with linearly polarized illumination [19].…”

Section: Introductionmentioning

confidence: 99%

Bound states in the continuum in a fluxonium qutrit

2022

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Heavy fluxonium at zero external flux has a long-lived state when coupled capacitively to any other system. We analyze it by projecting all the fluxonium-relevant operators into the qutrit subspace, as this long-lived configuration corresponds to the second excited fluxonium level. This state becomes a bound state in the continuum (BIC) when the coupling occurs to an extended system supporting a continuum of modes. In the case without noise, we find BIC lifetimes T 1 that can be much larger than seconds when the fluxonium is coupled to a superconducting waveguide, while typical device frequencies are on the order of gigahertz. We have performed a detailed study of the different sources of decoherence in a realistic experiment, finding that upwards transitions caused by a finite temperature in the waveguide and decay induced by 1/ f flux noise are the most dangerous ones. Even in their presence, BIC decay times could reach the range of T 1 ∼ 10 −1 ms, while preparation times are of the order of 10 2 ns.

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Bound States in the Continuum in Compact Acoustic Resonators

Cited by 52 publications

References 40 publications

Bound states in the continuum in photonic structures

Bound states in the continuum in photonic structures

Plasmonic Bound States in the Continuum in Compact Nanostructures

Bound states in the continuum in a fluxonium qutrit

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