Thermoacoustic modes of intrinsic and acoustic origin and their interplay with exceptional points
Sign Up to like & getrecommendations! Published in 2020 at "Combustion and Flame"
DOI: 10.1016/j.combustflame.2019.09.018
Abstract: Abstract We propose a general classification of all the modes of a given thermoacoustic system into two sets: one of acoustic origin and one of intrinsic thermoacoustic (ITA) origin. To do this, the definition of… read more here.
Keywords: exceptional points; thermoacoustic modes; modes intrinsic; origin ... See more keywords
Strong Coupling and Exceptional Points in Optically Pumped Active Hyperbolic Metamaterials
Sign Up to like & getrecommendations! Published in 2018 at "ACS Photonics"
DOI: 10.1021/acsphotonics.8b00300
Abstract: We investigate the interaction of light in gain-enhanced multilayered hyperbolic metamaterials in the strong interaction regime. Pumping the dye in the dielectric layers from inside the light cone, while emission occurs into the lower hyperbolic… read more here.
Keywords: exceptional points; points optically; metamaterials strong; coupling exceptional ... See more keywords
Erratum: Enhanced sensitivity at higher-order exceptional points
Sign Up to like & getrecommendations! Published in 2017 at "Nature"
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
Sign Up to like & getrecommendations! Published in 2019 at "Nature Communications"
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
Tailoring exceptional points with one-dimensional graphene-embedded photonic crystals
Sign Up to like & getrecommendations! Published in 2019 at "Scientific Reports"
DOI: 10.1038/s41598-019-42092-2
Abstract: We theoretically demonstrate that tunable exceptional points (EPs) can be realized by using graphene-embedded one-dimensional (1D) photonic crystals with optical pumping in the terahertz (THz) frequency range. By tuning the Fermi level of graphene sheet,… read more here.
Keywords: graphene embedded; exceptional points; tailoring exceptional; graphene ... See more keywords
Exceptional points of the Lindblad operator of a two-level system
Sign Up to like & getrecommendations! Published in 2019 at "Molecular Physics"
DOI: 10.1080/00268976.2019.1593535
Abstract: The Lindblad equation for a two-level system under an electric field is analyzed by mapping to a linear equation with a non-Hermitian matrix. Exceptional points of the matrix are found to be extensive; the second-order… read more here.
Keywords: two level; exceptional points; level system; points lindblad ... See more keywords
Detecting deformed commutators with exceptional points in optomechanical sensors
Sign Up to like & getrecommendations! Published in 2021 at "New Journal of Physics"
DOI: 10.1088/1367-2630/ac3ff7
Abstract: Models of quantum gravity imply a modification of the canonical position-momentum commutation relations. In this paper, working with a binary mechanical system, we examine the effect of quantum gravity on the exceptional points of the… read more here.
Keywords: system; effect quantum; quantum gravity; gravity ... See more keywords
Waveguide-induced coalescence of exceptional points
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.101.053820
Abstract: In non-Hermitian systems, multiple eigenstates can merge into one state at so-called exceptional points (EPs). This paper presents the coalescence of the multiple EPs based on a waveguide. For the ring cavities located at the… read more here.
Keywords: exceptional points; second order; coalescence; waveguide induced ... See more keywords
Energy-level attraction and heating-resistant cooling of mechanical resonators with exceptional points
Sign Up to like & getrecommendations! Published in 2021 at "Physical Review A"
DOI: 10.1103/physreva.104.013502
Abstract: We study the energy-level evolution and ground-state cooling of mechanical resonators under a synthetic phononic gauge field. The tunable gauge phase is mediated by the phase difference between the $\mathcal{PT}$- and anti-$\mathcal{PT}$-symmetric mechanical couplings in… read more here.
Keywords: energy level; exceptional points; cooling mechanical; energy ... See more keywords
Generating high-order exceptional points in coupled electronic oscillators using complex synthetic gauge fields
Sign Up to like & getrecommendations! Published in 2023 at "Physical Review A"
DOI: 10.1103/physreva.107.042219
Abstract: Exceptional points (EPs) are degeneracies of non-Hermitian systems, where both eigenvalues and eigenvectors coalesce. Classical and quantum systems exhibiting high-order EPs have recently been identified as fundamental building blocks for the development of novel, ultra-sensitive… read more here.
Keywords: exceptional points; gauge fields; high order; synthetic gauge ... See more keywords
Floquet protocols of adiabatic state flips and reallocation of exceptional points
Sign Up to like & getrecommendations! Published in 2018 at "Physical Review A"
DOI: 10.1103/physreva.97.042119
Abstract: We introduce the notion of adiabatic state flip of a Floquet Hamiltonian associated with a non-Hermitian system that it is subjected to two driving schemes with clear separation of time scales. The fast (Floquet) modulation… read more here.
Keywords: state; exceptional points; adiabatic state; protocols adiabatic ... See more keywords