In this work, we perform a detailed theoretical and experimental investigation of an atomic memory based on recoil-induced resonance in cold cesium atoms. We consider the interaction nearly degenerate pump probe beams with ensemble two-level A full density matrix calculation extended Hilbert space internal external degrees freedom allows us to obtain, from first principles, transient stationary responses determining transmission forward four-wave-mixing spectra. These two signals are...

We report on a new, to the best of our knowledge, type optical memory that allows for amplification signal carrying stored information during its reading process. The mechanism is demonstrated in an ensemble cold cesium atoms and based multiple parametric four-wave mixing exploring external atomic degrees freedom via recoil-induced resonances. have particularly storage light orbital angular momentum with fourfold amplifying factor retrieved Memory lifetimes order hundreds microseconds been...

In this work, we explore both the internal and external atomic degrees of freedom to demonstrate observation giant gain parametric oscillation in multiple four-wave mixing (FWM) processes a sample cold cesium atoms. We employ standard backward FWM beam configuration achieve probe-beam gains exceeding 2000. This is accompanied by generation three other beams equivalent power emitted along directions satisfying phase-matching conditions for cascade forward triggered incident probe...

We report the investigation of a collimated blue light generated in rubidium vapor due to combined action an ultrashort pulse train and cw diode laser. Each step two-photon transition 5S - 5P$_{3/2}$ 5D is excited by one lasers, induced coherence between 6P$_{3/2}$ states responsible for generating beam. Measurements excitation spectrum reveal frequency comb structure, indicating that each individual mode inducing nonlinear process. The strong signal dependency on atomic density...

We report a new type of optical memory using pure two-level system cesium atoms cooled by the magnetically assisted Sisyphus effect. The information probe field is stored in coherence between quantized vibrational levels potential wells 1-D lattice. retrieved pulse shows Rabi oscillations with frequency determined reading beam intensity and are qualitatively understood terms simple theoretical model. exploration external degrees freedom an atom may add another capability design...

The propagation of light that undergoes multiple-scattering by resonant atomic vapor can be described as a L\'evy flight. flight is random walk with heavy tailed step-size (r) distribution, decaying asymptotically $P(r)\sim r^{-1-\alpha}$, $\alpha<2$. large steps, typical flights, have its origins in frequency redistribution the scattered vapor. We calculate function and distribution for diffusion From we extract parameter $\alpha$ depends on step's size. investigate how are influenced...

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We investigate the transformation of Rayleigh speckle patterns by an atomic cesium vapor. After propagation through vapor, incident exponentially decaying intensity distribution speckles is transformed with enhancement high intensities probabilities (extreme events). The measured distributions are fitted Weibull distributions. nonlinear interaction between vapor and optical field leads to intensity-dependent refraction absorption, resulting in changes spots' propagation. measure inverse...

L\'evy flight superdiffusion consists of random walks characterized by very long jumps that dominate the transport. However, finite size real samples introduces truncation and modifies transport properties. We measure typical Levy parameters for photon diffusion in atomic vapor a Voigt absorption profile. observe change parameter as function length. associate this variation with size-dependent contributions from different spectral regions emission profile Doppler core dominating thin Lorentz...

The propagation of a photon in an atomic medium can be seen as L\'evy-flight random walk where the probability distribution $P(z)$ for step length $z$ scales with ${z}^{\ensuremath{-}(\ensuremath{\alpha}+1)}$, $0&lt;\ensuremath{\alpha}&lt;2$. In vapors, previous work reported value $\ensuremath{\alpha}$ obtained from direct measurement and also dependence transmission on sample opacity, both Doppler Lorentz profiles. this work, we report Cs cell scaling starting point, i.e., average...

We investigated the Four-Wave Mixing ( FWM ) process in cesium vapor Cs – 133). Four channels coupled to each other were generated, showing sub-Doppler peaks spectra obtained, which are unusual results for heated atomic vapors.

We report on the observation of subharmonic resonances in high-order wave mixing associated with quantized vibrational levels atoms trapped a one-dimensional optical lattice created by two intense nearly counterpropagating coupling beams. These resonances, occurring at $\ifmmode\pm\else\textpm\fi{}1/2$ and $\ifmmode\pm\else\textpm\fi{}1/3$ frequency separation between adjacent levels, are observed through phase-match angularly resolved six- eight-wave processes. investigate how these evolve...

La investigación en enfermería es un área de oportunidad para el desarrollo profesional, pues aún continua la necesidad escribir y registrar todo lo que experiencia cuidado nos brinda, orientándolo a una mejora del paciente futuro tecnologías nuevas prácticas.

We explore the interaction between a laser and resonant atomic vapor as platform to investigate Lévy flight superdiffusion. influence of system size on photons random walk characteristics.

We present a first-principles model for non-volatile atomic memory based on recoil-induced resonances (RIR) and directly compare it to experimental data obtaining good agreement all phases of the experiment.

In this work we perform a detailed theoretical and experimental investigation of an atomic memory based on recoil-induced resonance in cold cesium atoms. We consider the interaction nearly degenerated pump probe beams with ensemble two-level A full density matrix calculation extended Hilbert space internal external degrees freedom allows us to obtain, from first principles, transient stationary responses determining transmission forward four-wave mixing spectra. These two signals are...