We experimentally demonstrate magnon Kerr effect in a cavity-magnon system, where magnons small yttrium iron garnet (YIG) sphere are strongly but dispersively coupled to the photons three-dimensional cavity. When YIG is pumped generate considerable magnons, yields perceptible shift of cavity's central frequency and more appreciable shifts modes. derive an analytical relation between drive power for uniformly magnetized find that it agrees very well with experimental results Kittel mode. Our...

Magnon-polaritons are hybrid light-matter quasiparticles originating from the strong coupling between magnons and photons. They have emerged as a potential candidate for implementing quantum transducers memories. Owing to dampings of both photons magnons, polaritons limited lifetimes. However, stationary magnon-polariton states can be reached by dynamical balance pumping losses, so intrinsical nonequilibrium system may described non-Hermitian Hamiltonian. Here we design tunable cavity...

Chiral metasurfaces, with appealing properties for studying light-matter interactions at the nanoscale, have emerged as a promising platform realization of chiral optical responses, thereby showing advantages in chirality-related applications. The conventional approaches primarily concentrate on circular dichroism and high $Q$ factor resonances, while little attention has been paid to aspects flexibility controllability modulation chirality, further inhibiting implementation tunable...

The bound states in the continuum (BICs) optical metasurfaces have latterly received prominent attention for their ultrahigh quality factors and promise that they hold realizing lowthreshold nanolasers, high-harmonic generation, slow-light devices. In this scenario, flexible tuning of BIC is at heart multifunctional tunable metadevices underpinning central role modulation spectral responses. Most BIC-inspired works are limited to single types BICs modes only affected by structural...

Plasmonic sensing that enables the detection of minute events, when incident light field interacts with nanostructure interface, has been widely applied to optical and biological detection. Implementation controllable plasmonic double Fano resonances (DFRs) offers a flexible efficient way for sensing. However, digital metasurface induced by tailorable DFRs require further study. In this work, we numerically theoretically investigate near-infrared in hybrid concentric ϕ-shaped-hole...

Higher-order exceptional points (EPs) in non-Hermitian systems have attracted great interest due to their advantages sensitive enhancement and distinct topological features. However, realization of such EPs is still challenged because more fine-tuning parameters generically required quantum systems, compared the second-order EP (EP2). Here, we propose a three-mode optomechanical system blue-sideband regime for predicting third-order (EP3). By deriving pseudo-Hermitian condition proposed...

Abstract Planar chiral metasurfaces have emerged as a versatile platform for manipulating light‐matter interactions in diverse applications. However, it remains challenging to achieve high quality factors together with strong chirality. Here, all‐dielectric Q factor of 1220 and relatively large planar chirality circular dichroism −0.37 under normal incidence, or 872 extrinsic 3D 0.7, based on Mie surface lattice resonances (SLRs) are proposed experimentally demonstrated. Both SLR‐induced...

Engineering strong single-photon optomechanical couplings is crucial for systems. Here, we propose a hybrid quantum system consisting of nanobeam (phonons) coupled to spin ensemble and cavity (photons) overcome it. Utilizing the critical property lower-branch polariton (LBP) formed by ensemble-phonon interaction, LBP-cavity coupling can be greatly enhanced three orders magnitude original one, while upper-branch (UBP)-cavity fully suppressed. Our proposal breaks through condition strength...

Abstract Plasmonic Fano resonance (FR) that contributes to multitudinous potential applications in subwavelength nanostructures can facilitate the realization of tunable wavelength selectivity for controlling light–matter interactions metasurfaces. However, plasmonic FR be generated metasurfaces with simple or complex geometries, and few them support flexible amplitude modulation multiwavelength information transfer processing. Here, we study near-infrared a hybrid metasurface composed...

Kerr-nonlinearity induced self-focusing or self-defocusing effect provides the opportunity for exploring fundamental phenomena related to light-matter interactions. Here we show that linear and nonlinear dispersion responses are significantly sensitive both detunings tunneling strengths of indirect-excitonic (IX) states in an asymmetric triple quantum dot system. In particular, properties dominated by tunnel-enhanced cross-Kerr nonlinearity from one IX states. Meanwhile, varying other...

Physical systems in the time domain may exhibit analogous phenomena real space, such as crystals, time-domain Fresnel lenses, and modulational interference a qubit. Here we report experimental realization of grating using superconducting qutrit periodically modulated probe control fields via two schemes: Simultaneous modulation complementary modulation. Both numerical results Autler-Townes (AT) modulation-induced diffraction (MID) effects. Theoretical also confirm that peak positions fringes...

Anisotropic plasmonic metasurfaces have attracted broad research interest since they possess novel optical properties superior to natural materials and their tremendous design flexibility. However, the realization of multi-wavelength selective that emerged as promising candidates uncover multichannel devices remains a challenge associated with weak modulation depths narrow operation bandwidth. Herein, we propose numerically demonstrate near-infrared passive switching (PPS) encompasses high...

Strong metal–Bronsted acid interaction is critical for interfacial catalysis. Tunable electronic coupling at the metal/acid interface tandem C–H and C–O bond activation has been largely unexplored. We reported a simple design principle Pt–Fe3+ catalysts to tailor electron structure between metallic structural acidic frameworks via strong Pt-Bronsted interaction, cascade hydrogenolysis of glycerol involving cleavage. One key findings in this work that formation Fe(OH)O species hybrids...

Resonant lattice Kerker effect in periodic resonators is one of the most interesting generalizations that relates to various fascinating functionalities such as scattering management and Huygens metasurfaces. However, so far this has been shown be sensitive incident polarization, restricting its applications. Here, we report, for first time, polarization-independent resonant metasurfaces composed Ge$_2$Se$_2$Te$_5$ (GST) disks. For a metasurface square lattice, spectrally overlap electric...

Background: Flunixin is a Non-Steroidal Anti-Inflammatory Drug (NSAID), because it can effectively alleviate the organism of pyrexia, inflammation and pain, has been widely used in veterinary practice. In order to better study flunixin body's absorbed, distributed, metabolized excreted, our team developed UPLC-MS/MS method for determination swine plasma, urine feces. Methods: was extracted from sample by liquid-liquid extraction cleaned-up using mixed-mode Oasis MCX solid-phase column....

Floquet theory combined with the generalized Van Vleck nearly degenerate perturbation theory, has been widely employed for studying various two-level systems that are driven by external fields via time-dependent longitudinal (i.e., diagonal) couplings. However, three-level strongly transverse off-diagonal) couplings have rarely investigated, due to breakdown of traditional rotating wave approximation. Meanwhile, conventional is not directly applicable, since a small parameter perturbed part...

Fano resonances that feature strong field enhancement in the narrowband range have motivated extensive studies of light-matter interactions plasmonic nanomaterials. Optical metasurfaces are subject to different mirror symmetries been dedicated achieving nanoscale light manipulation via resonances, thus enabling advantages for high-sensitivity optical sensing and switches. Here, we investigate switches enriched by tailorable multiple undergo in-plane symmetry or asymmetry a hybrid rotational...

We theoretically investigate the tunneling-induced transparency (TIT) and Autler-Townes (AT) doublet triplet in a triple-quantum-dot system. For resonant tunneling case, we show that TIT induces dip weak-tunneling regime no anticrossing occurs eigenenergies of system Hamiltonian. However, strong-tunneling regime, evolves to AT splitting, which results well-resolved double anticrossings. off-resonance demonstrate that, is realized with new detuning-dependent dip, where also absent. In triple...

Abstract ( S )‐(1‐Benzylpyrrolidin‐2‐yl)diphenylmethanol and cinchonine were evaluated as promotors in the asymmetric additions of phenylacetylene to ketones, order prepare chiral propargylic alcohols. Good yields (up 89%) moderate enantioselectivities 77.9% ee ) achieved. Addition Ti(OPr‐ i 4 can significantly improve enantioselectivity reaction.