Abstract With a forward cone emitting from the strong pump laser in thermal rubidium atomic vapor, we investigate non-degenerate parametrically amplified four-wave mixing (PA-FWM) process with dressing effects three-level “double-Λ” configuration both theoretically and experimentally. By seeding weak probe field into Stokes or anti-Stokes channel of FWM, gain processes are generated bright twin beams which called conjugate beams, respectively. However, effect beam will dramatically affect...

Abstract We study the enhancement and suppression of different multi-waving mixing (MWM) processes in a Rydberg-EIT rubidium vapor system both theoretically experimentally. The nonlinear dispersion property hot atoms is modulated by Rydberg-Rydberg interaction, which can result phase shift relative between dark bright states. Such Rydberg-induced be quantitatively estimated lineshape asymmetry enhancedand suppressed MWM processes, also demonstrate cooperative atom-light interaction caused...

The collisional loss rates of 63${S}_{1/2}$ Rydberg atoms in cesium magneto-optical trap are measured by using the state-selective pulse field ionization technique and used to investigate interaction between atoms. rate coefficients due collisions with ground-state obtained fitting experimental data. results indicate that large mainly comes from strong long-range ultracold atoms, is significantly increased under a weak electric field.

We investigate the eight-wave mixing (EWM) process involving highly excited Rydberg states with assistance of coexisting electromagnetically induced transparency (EIT) windows in a thermal 85Rb vapor both theoretically and experimentally. By use disturbance-free optical detection method, EWM characterized by multiple sets spin coherence is presented via interplay competition between dressing-state effects excitation blockade caused strong Rydberg-Rydberg interaction. Such can be demonstrated...

Considering the fact that orbital angular momentum of light can be transferred through light-matter interactions, we experimentally induced a dressed vortex four-wave mixing (FWM) with interaction between probe beam and an inverted Y-type four-level atomic system photonic band gap. Further, Kerr-nonlinearity-modulated propagation behaviors FWM vortices are investigated, including spatial shift, splitting, incompleteness shape. Strikingly, beams influenced by nonlinear phase spiral phase....

Optoelectronic functional materials with flexible and in-plane anisotropic properties has been a significant development direction of nanotechnology due to wearable polarized optoelectronic applications. Herein, the elasticity, global band dispersion, optical dielectric environmentally friendly IVB-VIA layered transition metal trichalcogenides (MX3, M = Zr, Hf; X S, Se) are investigated systematically by density theory different kinds van der Waals correction hybrid functional. The low...

Different aspects of the properties coexisting super-fluorescence (SFL), multi-wave mixing with fluorescence signal in sodium vapor are studied both theoretically and experimentally. First, by scanning dressed-state, these processes, such as SFL modulated using dark bright states, interplay between dressed-states, observed for first time. Then, probe field, one-photon two-photon processes signals is obtained or without external dressing fields. Such control on each process system has an...

Abstract The theory of proof-of-principle triple-mode squeezing is proposed via spontaneous parametric six-wave mixing process in an atomic-cavity coupled system. Special attention focused on the role dressed state and nonlinear gain process. Using theory, we find that optical Autler-Towns splitting cavity mode can be realized with gain, while efficiency location maximum point effectively shaped by atomic ensemble. Our proposal applications multi-channel communication quantum imaging.

The oscillator strengths of 6 P 3/2 → n S / D transitions are measured by fitting ultracold Cs Rydberg atom field-ionized spectra. strength ratios η( ) = f 5/2 ( )/ and ρ( 1/2 + 2)/ ), which agree with the calculations based on wave functions obtained Numerov's method, determined. results indicate that almost independent principal quantum number .

In this letter, we show polarized dressing suppression and enhancement of six-wave mixing involving Rydberg in a multi-Zeeman-level atomic system. By scanning the frequency detuning field, observe with different polarization probe field thermal vapors. Since states can select transitions among multi-Zeeman levels, dependence is investigated for first time. Theoretical calculations are given good agreement experimental results.

We experimentally and theoretically investigate the Rydberg six-wave mixing (SWM) process in 85Rb atomic vapor. Through comparing center frequency positions of resonant SWM signals with different densities, levels induced by van der Waals interaction are observed. Meanwhile, such which is sensitive to blockade can be modulated self-dressing effect and/or external dressing effect. In addition, eight-wave obtained if power field low. Such blockaded multi-wave has potential applications...

We investigate the way to control multi-wave mixing (MWM) process in Rydberg atoms via interaction between blockade and light field dressing effect. Considering both of primary secondary blockades, we theoretically study MWM diatomic quadratomic systems, which enhancement, suppression avoided crossing can be affected by atomic internuclear distance or external electric intensity. In system, also eliminate Such investigations have potential applications quantum computing with atom as carrier qubit.

A higher degree of entanglement entangled sources in quantum communications is always desired and can be achieved with high nonlinear gains. The dressing atomic coherence optical pumping considered as effective parameters to obtain such sources. In this regard, we have experimentally studied doubly dressed effects a small range frequency, de-pumping over wide frequency multi-level system order enhance the gain. multi-mode phenomenon that results from multi-peak Autler–Townes splitting...

We report for the first time theoretical and experimental research on Rydberg electromagnetically induced transparency second-order fluorescence dressing evolution by Rabi frequency control in thermal atomic vapors, which controlled results are well explained effect excitation blockade. Based certification of blockade fraction through dependence principle quantum number n, we obtain curves, consisting single-dressing double-dressing local nonlocal samples scanning probe fields. In addition,...

Eight-wave mixing (EWM) is a seven-order nonlinear process that can reflect nonclassical features within multiple optical fields, thus imparting certain advantages. In this study, we directly observed the EWM spectrum and spatial images show Rydberg atoms under circularly polarized probe field in five-level coherently prepared atomic system. Such circular polarization dressing fields obtain high-contrast overcome difficulties of several multi-wave (MWM) signals always coexist,...

Polarized Autler–Townes (AT) splitting of six-wave mixing (SWM) involving Rydberg atoms is for the first time observed in a thermal vapor cell. By scanning frequency detuning dressing field, AT SWM compared with that non-Rydberg an elliptically polarized probe field. It demonstrated spectra are strongly dependent on interaction between atoms. Moreover, cyclically modulated via multi-dark state and presented by corresponding spatial images. The theoretical calculations good agreement...

We report the experimental observation of intensity noise correlation between six-wave mixing (SWM), fluorescence and probe transmission signal in a coherently prepared Rydberg atomic ensemble. With assistance electromagnetically induced transparency (EIT) technique, SWM is generated with high efficiency. Then SWM, anti-correlation fluorescence, occur, these being caused by enhanced dispersion nonlinearity Rydberg-EIT medium. Such can be effectively controlled strong Rydberg-dressing effect....

For the first time, we present comparison of Autler–Townes (AT) splitting in fluorescence and six-wave mixing (SWM) signals with electromagnetically induced transparency (EIT). With detunings generating or external-dressing fields scanned, two are distinguished theoretically investigated experimentally. The EIT separation AT SWM can be controlled by a phase determined angle between incident beams. These phenomena also modulated beam powers. In particular, anti-AT representing vanishing...