Erratum: Enhanced sensitivity at higher-order exceptional points
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DOI: 10.1038/nature24024
Abstract: This corrects the article DOI: 10.1038/nature23280 read more here.
Keywords: erratum enhanced; exceptional points; enhanced sensitivity; higher order ... See more keywords
Arbitrary order exceptional point induced by photonic spin–orbit interaction in coupled resonators
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DOI: 10.1038/s41467-019-08826-6
Abstract: Many novel properties of non-Hermitian systems are found at or near the exceptional points—branch points of complex energy surfaces at which eigenvalues and eigenvectors coalesce. In particular, higher-order exceptional points can result in optical structures… read more here.
Keywords: exceptional points; exceptional point; order exceptional; arbitrary order ... See more keywords
Ultrasensitive Higher-Order Exceptional Points via Non-Hermitian Zero-Index Materials.
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DOI: 10.1103/18gg-gvzc
Abstract: Higher-order exceptional points (EPs) in optical structures enable ultrasensitive responses to perturbations. However, previous investigations on higher-order EPs have predominantly focused on coupled systems, leaving their fundamental physics in open scattering systems largely unexplored. Here,… read more here.
Keywords: higher order; order exceptional; order eps; exceptional points ... See more keywords
Exceptional points by coupling of modes with different angular momenta in deformed microdisks: A perturbative analysis
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DOI: 10.1103/physreva.98.023851
Abstract: Recently, it has been shown numerically and by a semiclassical approach [Phys. Rev. Lett. 120, 093902 (2018)] that second-order exceptional points can appear in the spectrum of weakly deformed microdisk resonators by coupling of optical… read more here.
Keywords: exceptional points; coupling modes; different angular; points coupling ... See more keywords
Higher-order exceptional points in ferromagnetic trilayers
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DOI: 10.1103/physrevb.101.144414
Abstract: Magnetometers with exceptional sensitivity are highly demanded in solving a variety of physical and engineering problems, such as measuring Earth's weak magnetic fields and prospecting mineral deposits and geological structures. It has been shown that… read more here.
Keywords: order exceptional; order; exceptional points; higher order ... See more keywords
Higher-order exceptional point in a cavity magnonics system
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DOI: 10.1103/physrevb.99.054404
Abstract: We propose to realize the pseudo-Hermiticity in a cavity magnonics system consisting of the Kittel modes in two small yttrium-iron-garnet spheres coupled to a microwave cavity mode. The effective gain of the cavity can be… read more here.
Keywords: order exceptional; system; exceptional point; cavity ... See more keywords
High-order exceptional point based optical sensor.
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DOI: 10.1364/oe.418644
Abstract: Exceptional points (EPs) could potentially enhance the sensitivity of an optical sensing system by orders of magnitude. Higher-order EP systems, having more complex physics, can further boost this parameter. In this paper, we investigate the… read more here.
Keywords: order exceptional; order; exceptional point; optical sensor ... See more keywords
Higher-order exceptional points and enhanced polarization sensitivity in anisotropic photonic time-Floquet crystals.
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DOI: 10.1364/oe.539505
Abstract: We realized fourth-order exceptional points (EP-4s) in the quasienergy bands of anisotropic photonic time-Floquet crystals (APTCs), where the full in-plane permittivity tensors are periodically modulated in time. We developed the Floquet matrix method for APTCs,… read more here.
Keywords: time; order exceptional; anisotropic photonic; exceptional points ... See more keywords
Higher order exceptional points in infinite lattices.
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DOI: 10.1364/ol.459398
Abstract: One of the hallmarks of non-Hermitian photonics is the existence of unique degeneracies, the so-called higher order exceptional points (HEPs). So far, HEPs have been examined mostly in finite coupled systems. In this paper, we… read more here.
Keywords: exceptional points; higher order; infinite lattices; order exceptional ... See more keywords