Intrinsical localization of both topological (anti-kink) envelope and gray (black) gap solitons of the condensed bosons in deep optical lattices

Wang, Y; Ding, Jianwen; Wang, D L; Liu, W M

doi:10.1063/5.0025441

Cited by 4 publications

(1 citation statement)

References 60 publications

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“…[24,25] The general properties of gap solitons have been intensively studied in many different nonlinear periodic systems, examples include but are not limited to optical waveguide arrays and photonic lattices, [26,27] semiconductor microcavities, [28] and BEC in optical lattices. [1,23,29,30] Gap solitons in honeycomb optical lattice have been studied both theoretically and experimentally. [17] The authors of Ref.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamical stability of gap solitons in Bose–Einstein condensate loaded in a deformed honeycomb optical lattice*

Meng¹,

Zhou²,

Ren³

et al. 2021

Chinese Phys. B

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We investigate the existence and dynamical stability of multipole gap solitons in Bose–Einstein condensate loaded in a deformed honeycomb optical lattice. Honeycomb lattices possess a unique band structure, the first and second bands intersect at a set of so-called Dirac points. Deformation can result in the merging and disappearance of the Dirac points, and support the gap solitons. We find that the two-dimensional honeycomb optical lattices admit multipole gap solitons. These multipoles can have their bright solitary structures being in-phase or out-of-phase. We also investigate the linear stabilities and nonlinear stabilities of these gap solitons. These results have applications of the localized structures in nonlinear optics, and may helpful for exploiting topological properties of a deformed lattice.

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Section: Introductionmentioning

confidence: 99%

Nonlinear dynamical stability of gap solitons in Bose–Einstein condensate loaded in a deformed honeycomb optical lattice*

Meng¹,

Zhou²,

Ren³

et al. 2021

Chinese Phys. B

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Effect of energy level configuration on storage of optical solitons in InAs/GaAs quantum dot electromagnetically induced transparency medium

Wang¹,

Zhou²,

Qiao³

et al. 2023

Acta Phys. Sin.

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Rubidium isotope analysis has important application value in geological exploration and environmental detection. Based on tunable laser atom absorption spectroscopy technology combined with thermal decomposition of the sample, a rubidium isotope absorption spectroscopy measurement device is bulit to realize rubidium isotope ratio stability detection. And the atomic generator is designed by a new micro-channel array structure, which enhances atomic beam collimation capability, effectively suppresses the doppler effect of the spectrum and improves the resolution of rubidium isotope absorption spectrum. The device adopts tantalum metal to make the atomic generator with a diameter of 6 mm, and the micro-channel array with a diameter of 1 mm is stacked inside the atomic generator which can be heated resistively to 3000 ℃. In this experiment, the rubidium carbonate sample is catalyzed to release rubidium atom beam at high temperature (600 ℃), while a probe laser is used to obtain high resolution rubidium absorption spectrum. The rubidium isotope ratio (85Rb: 87Rb) of natural abundance rubidium carbonate samples is 2.441±0.02 by combining the inversion of the spectral line parameters, the detection error is 4.8%, and the detection limit of 87Rb is 1.76‰ (3σ). The experimental results show that the multi-microchannel structure reduces the linewidth of rubidum atoms by 450 MHz (half height full width) compared to the single-channel structure, which can effectively distinguish the absorption characteristics of rubidium isotopes. The device has a high detection accuracy and a high spectral resolution, allowing for a possibility for the measurement of metal isotope abundance analysis, which has a broad application prospect.

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Effect of inter-dot tunneling coupling on soliton dynamical behaviors in four-level triple quantum dot EIT medium

Wang,

Chen

et al. 2024

Acta Phys. Sin.

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Soliton, which can travel over long distance without attenuation and shape change due to the balance of the interplay between dispersion (or diffraction) and nonlinearity in nonlinear media, becomes a good information carrier in quantum information processing and transmission. Up to now, the study on the optical solitons mainly is focus on ultra-cold atomic electromagnetic induction transparency (EIT) media. This is mainly because ultra-cold atomic systems can generate strong nonlinear effects under low light excitation. However, for the practical application, it is a large challenge to control accurately the optical solitons dynamics in the atomic EIT media due to its low temperature (which approaches to absolute zero) and rarefaction. Fortunately, with the maturity of semiconductor quantum production technology, quantum dots have extensively applying prospect in quantum information processing and transmission. So, in the paper, we study the optical solitons dynamics in a four-level asymmetric array-type three quantum dots EIT medium.Based on the current experiment, we first propose a four-level asymmetric array-type three quantum dots EIT model. Subsequently, by using amplitude variable approach combined with multi-scale method, we study analytically the propagation of a probe pulses in this system. It is shown that when one (the another) inter-dot tunneling coupling is turned on (off), only a single transparency window appears in the center range of the probe field detuning. Only if two inter-dot tunneling couplings are turned on, two transparent windows are distributed on both sides of the central region of the probe field detuning. And the width of the single or two transparent window becomes wider with the increasing strength of the inter-dot tunneling coupling. For the nonlinear case, by choosing appropriate parameters in the area of the transparency window, the stable propagation of soliton can be realized. Interestingly, we find that the strength of the inter-dot tunneling coupling has an important effect on the soliton dynamics behaviors. In the case that one (the another) inter-dot tunneling coupling is turned on (off), with the increasing strength of the inter-dot tunneling coupling, the velocity of the soliton exhibits a trend of first increasing and then decreasing, as well as the amplitude of the soliton appears a increasing trend for ever. For the case that two inter-dot tunneling couplings are turned on, with the increasing strength of the two inter-dot tunneling coupling, the velocity of the soliton emerges a decreasing trend for ever, while the amplitude of the soliton presents a trend of first decreasing and then increasing. Thus, the amplitude modulation effect of optical soliton can be realized in semiconductor quantum dot devices.

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Intrinsical localization of both topological (anti-kink) envelope and gray (black) gap solitons of the condensed bosons in deep optical lattices

Cited by 4 publications

References 60 publications

Nonlinear dynamical stability of gap solitons in Bose–Einstein condensate loaded in a deformed honeycomb optical lattice*

Nonlinear dynamical stability of gap solitons in Bose–Einstein condensate loaded in a deformed honeycomb optical lattice*

Effect of energy level configuration on storage of optical solitons in InAs/GaAs quantum dot electromagnetically induced transparency medium

Effect of inter-dot tunneling coupling on soliton dynamical behaviors in four-level triple quantum dot EIT medium

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