Objectives/Hypothesis To compare three existing endoscopic scoring systems and a newly proposed modified system for the assessment of patients with chronic rhinosinusitis (CRS). Study Design Blinded, prospective cohort study. Methods CRS completed two patient‐reported outcome measures (PROMs)—the visual analogue scale (VAS) symptom score Sino‐Nasal Outcome Test‐22 (SNOT‐22)—and then underwent standardized, recorded sinonasal endoscopy. Videos were scored by blinded rhinologists using...

We experimentally demonstrate strong coupling between a one-dimensional (1D) single-atom array and high-finesse miniature cavity. The atom is obtained by loading single atoms into 1D optical tweezer with dimensions of 1×11. Therefore, deterministic number obtained, the determined imaging on CCD camera in real time. By precisely controlling position spacing high finesse Fabry-Perot cavity, all are strongly coupled to cavity simultaneously. vacuum Rabi splitting spectra discriminated for...

It was shown [New J. Phys. 17, 103037 (2015)] that large and robust entanglement between two different mechanical resonators could be achieved, either dynamically or in the steady state, an optomechanical system which are coupled to a single cavity mode driven by suitably chosen two-tone field. An important limitation of scheme is decay rate must much smaller than frequencies their difference. Here we show can remarkably enhanced, validity largely extended, adding coherent feedback loop...

Optical nonreciprocity is important in photonic information processing to route the optical signal or prevent reverse flow of noise. By adopting strong nonlinearity associated with a few atoms strongly coupled cavity QED system and an asymmetric configuration, we experimentally demonstrate nonreciprocal transmission between two counterpropagating light fields extremely low power. The 18% achieved for forward field, maximum blocking ratio 30 dB. Though can be maximized by optimizing impedance...

Abstract Breaking the time‐reversal symmetry of light is great importance for fundamental physics and has attracted increasing interest in study non‐reciprocal photonic devices. Here, a chiral cavity quantum electrodynamics system with multiple atoms strongly coupled to Fabry–Pérot experimentally demonstrated. By polarizing internal state atoms, atom‐cavity interaction broken. The can be described by quasiparticles, that is, polariton. When it works linear regime, inherent nonreciprocity...

Abstract The realization of optical non-reciprocity is crucial for many applications, and also fundamental importance manipulating protecting the photons with desired time-reversal symmetry. Recently, various new mechanisms magnetic-free have been proposed implemented, avoiding limitation strong magnetic field imposed by Faraday effect. However, due to difficulties in separating signal from drive laser noise induced laser, these devices exhibit limited isolation performances their quantum...

Magnetic photonic crystals (PCs) possess attractive magnetic orientation, flexible pattern designability, and abundant angle-dependent colors, providing immense potential in anticounterfeiting field. However, all-solid PCs-based labels generally suffer from incompatibility with screen printing techniques, inferior environmental endurance mechanical properties. Herein, by developing a selective concentration polymerization method under field (H) microheterogenous dimethyl sulfoxide-water...

We propose a scheme to realize nonreciprocal mechanical squeezing in spinning optomechanical system, where resonator is driven by periodically modulated laser field via tapered optical fiber. The supports two counterpropagating modes and breathing mode induced the radiation pressure. According Sagnac effect, obtain opposite frequency shifts. By utilizing pump with given frequency, can only be achieved driving from one direction but not other. analyze impact of backscattering losses on find...

We demonstrate the first use of InGaAs/GaAs as a saturable absorber in Q-switching diode pumped Tm(3+) doped laser operating at wavelengths 1940 nm and 1986 nm. The influence semiconductor absorber's (SESA) position thermal lens effect on Q-switch characteristics was investigated. With pump power 35 W, maximum pulse energy 28.1 microJ with width 447 ns repetition frequency (PRF) 43.7 kHz obtained by selecting appropriate SESA.

We consider a three-mode optomechanical system in which two mechanical oscillators are independently coupled to cavity mode driven by controllable lasers. By controlling the two-tone driving, one can prepare entanglement and Einstein-Podolsky-Rosen (EPR) steering of modes, acts as single reservoir cool Bogoliubov modes. find that direction EPR be manipulated effectively adjusting damping rates thermal noises In addition, we show between modes enhanced adding parametric amplifier (PA) into...

We propose a theoretical project in which quantum squeezing induces entanglement and Einstein-Podolsky-Rosen steering coupled whispering-gallery-mode optomechanical system. Through pumping the $\chi^{(2)}$-nonlinear resonator with phase matching condition, generated squeezed mode mechanical of can generate strong EPR steering, where nonlinear plays vital role. The transitions from zero to one-way two-way be realized by adjusting system parameters appropriately. photon-photon between two...

We developed a resolved Raman sideband cooling scheme that can efficiently prepare single optically trapped cesium (Cs) atom in its motional ground states. A two-photon process between two outermost Zeeman sublevels hyperfine state is applied to reduce the phonon number. Our less sensitive variation magnetic field than commonly used where belonging separate states are taken. Fast optical pumping with spontaneous emission guarantees efficiency of process. After for 50 ms, 82% Cs atoms...

Landscape patterns and building functions are successfully used to provide the social sensing information of urban areas. However, previous studies treated ground objects equally, ignoring their size differences. Considering different contributions various types in land-use classification, this paper measured nine area-weighted mean landscape-level metrics describe landscape based on land-cover map, derived from remote images. Additionally, same idea was applied for identifying functions....

Abstract Non-reciprocal optical components are indispensable in applications, and their realization without any magnetic field has attracted increasing research interest photonics. Exciting experimental progress been achieved by either introducing spatial-temporal modulation of the medium or combining Kerr-type nonlinearity with spatial asymmetry photonic structures. However, extra driving fields required for first approach, while isolation noise transmission signal cannot be simultaneously...

Abstract It is showed how to generate and control the one‐way optomechanical steering in an optomagnomechanical system. In scheme, magnetostriction‐induced deformation displacement of a ferrimagnet couples optical cavity by radiation‐pressure interaction. The resonates with Stokes sideband laser drive field, leading parametric down‐conversion magnon mode anti‐Stokes microwave thereby cooling mechanical motion. By adjusting detuning between we show relative steady‐state population numbers...

We propose and demonstrate a method for characterizing the individual mirror parameters of fiber Fabry–Perot cavity (FFPC). By measuring reflection transmission spectra FFPC with an incident laser propagating from two mirrors considering several normal or unique losses, transmittance, reflectance, intra-cavity loss can be determined. Due to intrinsic limitation length, traditional powerful methods, such as ring-down technique, are not applicable FFPCs mirrors. This scheme provides dependable...

With the help of light-emitting diodes at center wavelength 470 nm, we demonstrate that light-induced atom desorption (LIAD) can be used for flexibly controlling loading magneto-optical traps (MOT) cesium atoms. Under an ultralow background pressure in a quartz cell without any wall coating, show low intensity blue light to control rates (from 200 4000 atoms/s) and number atoms (on order ${10}^{4}$ our experiment) MOT use dispensers or secondary source. A theoretical model based on rate...

We consider a dissipative cavity optomechanical system which couples to an auxiliary with high-quality factor and is driven by amplitude-modulated laser field. Due the introduction of cavity, we find that steady-state mechanical squeezing can be enhanced compared case without so-called 3 dB limit also broken in resolved-sideband regime. Moreover, achieved even unresolved-sideband study entanglement presented system. It found obtained introducing generated regime for appropriate parameters....

We report a calculation of the binding energy ground state hydrogenic donor in quantum dot, assumed to be form disk, presence uniform magnetic field applied parallel disk axis. assume that impurity ion is located at center disk. The consist finite length cylinder GaAs material surrounded by ${\mathrm{Ga}}_{1\mathrm{\ensuremath{-}}\mathit{x}}$${\mathrm{Al}}_{\mathit{x}}$As. calculations have been performed using suitable variational wave function for infinite confinement potential all...