Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Chinese Physics B

Spatial quantum coherent modulation with perfect hybrid vector vortex beam based on atomic medium

Yan 燕 Ma 马, Xin She Yang, Hong 虹 Chang 常, Xin-Qi Yang, Mingtao Cao, Xiao-Fei Zhang, Hong Zhi Gao, Ruifang Dong, Shougang Zhang

Published Nov 24, 2023• 0 citations
Publisher

Abstract

The perfect hybrid vector vortex beam (PHVVB) with helical phase wavefront structure has aroused significant concern in recent years, as its beam waist does not expand with the topological charge (TC). In this work, we investigate the spatial quantum coherent modulation effect with PHVVB based on the atomic medium, and we observe the absorption characteristic of the PHVVB with different TCs under variant magnetic fields. We find that the transmission spectrum linewidth of PHVVB can be effectively maintained regardless of the TC. Still, the width of transmission peaks increases slightly as the beam size expands in hot atomic vapor. This distinctive quantum coherence phenomenon, demonstrated by the interaction of an atomic medium with a hybrid vector-structured beam, might be anticipated to open up new opportunities for quantum coherence modulation and accurate magnetic field measurement.

DOI
10.1088/1674-1056/ad0f86

Related papers

Observation of the Rotational Doppler Effect With Structured Beams in Atomic Vapor

Shuwei Qiu, Jinwen Wang, Xin Yang +4 more

A vector beam with the spatial variation polarization has attracted keen interest and is progressively applied in quantum information, quantum communication, precision measurement, and so on. In this letter, the spectrum observation of the rotational Doppler effect based on the coherent interaction between atoms and structured light in an atomic vapor is realized. The geometric phase and polarization of the structured beam are generated and manipulated by using a flexible and efficacious combination optical elements, converting an initial linearly polarized Gaussian beam into a phase vortex beam or an asymmetric or symmetric vector beam. These three representative types of structured beam independently interact with atoms under a longitudinal magnetic field to explore the rotational Doppler shift associated with the topological charge. We find that the rotational Doppler broadening increases obviously with the topological charge of the asymmetric and symmetric vector beam. There is no rotational Doppler broadening observed from the spectrum of the phase vortex beam, although the topological charge, and spatial profile of the beam change. This study can be applied to estimate the rotational velocity of the atom-level or molecule-level objects, measure the intensity of magnetic fields and study the quantum coherence in atomic ensembles.

Frontiers in Physics•Jan 3, 2022•2 citations

Observing quantum coherence induced transparency of hybrid vector beams in atomic vapor

Xin Yang, Yun Chen, Jinwen Wang +6 more

In recent years, vector beams (VBs) with spatially varying polarization profiles have been used in many fields. Here we study the transmission properties of a hybrid VB passing through atomic vapor. We observe a four-petal pattern which is induced by the rapid transport of atomic coherence. This intensity distribution can be modified by coherence attenuation and absorption enhancement controlled by an external magnetic field. A second experiment with orthogonal circularly polarized states shows that the quantum coherence can be induced by two spatially separated laser beams and support our interpretation of our results for the hybrid VB experiment. Our results may have applications in optical manipulation, the measurement of magnetic fields, and the study of quantum coherence in atomic ensembles.

Optics Letters•May 29, 2019•29 citations

Nonlinear control of polarization rotation of hybrid-order vector vortex beams

Dajin Luo, Huajie Hu, Churong Pan +6 more

Abstract Vector vortex beams are widely concerned for their application prospects in various fields. Here we study the polarization rotation of hybrid-order vector vortex beam (HVVB) in hot atomic vapor both theoretically and experimentally. In this work, the HVVB is experimentally generated by combining two q-plates with a polarization beam splitter, and this method is verified by analyzing Jones vector based on the orthogonal circular polarization basis. We have experimentally investigated the polarization rotation of HVVB during the propagation in free space and atomic media. In free space, the polarization rotation characterized by rotation of horizontal components of the beams, has a limitation due to the effect of Gouy phase. In contrast, the polarization rotation angle in atomic media can break through this limitation due to the non-linearity and can be controlled by adjusting the relevant atomic parameters. The experimental results can be simulated by the theoretical model about cross-phase modulation of vector beams in a two-level atomic system.

Journal of Optics•Oct 6, 2020•7 citations

Spatial coherent manipulation of Bessel-like vector vortex beam in atomic vapor

Xinji Zeng, Zhuang Li, Xin Yang +8 more

Abstract The interaction between vector beams and atoms under a weak magnetic field could induce spatially dependent electromagnetically induced transparency (EIT). Based on such a coherence effect, we propose a method for manipulating vector beams carrying spiral varying phases in hot rubidium atoms. When a transverse magnetic field (TMF) is applied, the transparent regions of the transmitted beam are strongly depend on the beam’s polarization distribution. In addition to the intensity modulation, the alignment of the TMF is reflected in the rotation of the central symmetric transmission patterns. In theory, we discuss the physical mechanism of the spiral EIT region generated by the phase profile, and analyze the influence of system parameters on this coherent process. Our work confirms that introducing additional radial phases can also lead to spatially dependent EIT, which extends another degree of freedom to manipulate atomic polarization. This will provide potential applications in light field manipulation and multi-dimensional quantum storage.

New Journal of Physics•Jun 1, 2024•12 citations

Optically spatial information selection with hybridly polarized beam in atomic vapor

Jinwen Wang, Xin Yang, Yunke Li +5 more

Vector beams with spatially variant polarization have attracted much attention in recent years, with potential applications in both classical optics and quantum optics. In this work, we study a polarization selection of spatial intensity distribution by utilizing a hybridly polarized beam as a coupling beam and a circularly polarized beam as a probe beam in Rb87 atom vapor. We experimentally observe that the spatial intensity distribution of the probe beam after passing through atoms can be modulated by the hybridly polarized beam due to the optical pumping effect. Then, the information loaded in the probe beam can be designedly filtrated by an atomic system with a high extinction ratio. A detailed process of the optical pumping effect in our configurations and the corresponding absorption spectra are presented to interpret our experimental results, which can be used for the spatial optical information locally extracted based on an atomic system, which has potential applications in quantum communication and computation.

Photonics Research•Apr 21, 2018•37 citations

Vortex beam induced spatial modulation of quantum-optical effects in a coherent atomic medium

Pradipta Panchadhyayee, Aniket Banerjee, Bibhas Kumar Dutta

Abstract We have studied two-dimensional absorption, gain, and corresponding refractive index profiles in a ladder-type three-level atomic system interacting with three coherent fields. One is a weak probe field considered as a plane wave, while the other two are the control fields taken as two Laguerre–Gaussian doughnut beams. Position dependence of two vortex beams induces the spatially modulated coherence at the condition of resonance, which enables us to obtain space-dependent absorption, transparency, gain without inversion (GWI), and refractive index enhancement in the present scheme. The azimuthal modulation of coherence effects is attributed to the presence of optical angular momentum of the vortex beams. Under the influence of an additional travelling wave field with the presence of two vortex beams, the present model leads us to obtain an ultra-large enhancement of refractive index at the resonant detuning of the fields. This phenomenon makes the atom-field system to play the equivalent role of a high-refractive-index prism. The role of near dipole–dipole (NDD) interaction on the modulation of position-dependent coherence effects has also been investigated. It has been shown that, without any inclusion of the travelling wave field in the system, the phenomenon of resonant enhancement of refractive index may also occur in the presence of NDD effect. The new way of generating spatially controlled GWI and nonlinear refractive index enhancement is specific to the present model. This work seems to be useful for finding its applications in spatially modulated coherence controlled electromagnetically induced transparency-based quantum devices like quantum optical memory, switches, and quantum logic gates, where the refractive index switching phenomenon is a prerequisite.

Journal of Physics B Atomic Molecular and Optical Physics•Apr 15, 2024•2 citations
The perfect hybrid vector vortex beam (PHVVB) with helical phase wavefront structure has aroused significant concern in recent years, as its beam waist does not expand with the topological charge (TC). In this work, we investigate the spatial quantum coherent modulation effect with PHVVB based on the atomic medium, and we observe the absorption characteristic of the PHVVB with different TCs under variant magnetic fields. We find that the transmission spectrum linewidth of PHVVB can be effectively maintained regardless of the TC. Still, the width of transmission peaks increases slightly as the beam size expands in hot atomic vapor. This distinctive quantum coherence phenomenon, demonstrated by the interaction of an atomic medium with a hybrid vector-structured beam, might be anticipated to open up new opportunities for quantum coherence modulation and accurate magnetic field measurement.
A vector beam with the spatial variation polarization has attracted keen interest and is progressively applied in quantum information, quantum communication, precision measurement, and so on. In this letter, the spectrum observation of the rotational Doppler effect based on the coherent interaction between atoms and structured light in an atomic vapor is realized. The geometric phase and polarization of the structured beam are generated and manipulated by using a flexible and efficacious combination optical elements, converting an initial linearly polarized Gaussian beam into a phase vortex beam or an asymmetric or symmetric vector beam. These three representative types of structured beam independently interact with atoms under a longitudinal magnetic field to explore the rotational Doppler shift associated with the topological charge. We find that the rotational Doppler broadening increases obviously with the topological charge of the asymmetric and symmetric vector beam. There is no rotational Doppler broadening observed from the spectrum of the phase vortex beam, although the topological charge, and spatial profile of the beam change. This study can be applied to estimate the rotational velocity of the atom-level or molecule-level objects, measure the intensity of magnetic fields and study the quantum coherence in atomic ensembles.
In recent years, vector beams (VBs) with spatially varying polarization profiles have been used in many fields. Here we study the transmission properties of a hybrid VB passing through atomic vapor. We observe a four-petal pattern which is induced by the rapid transport of atomic coherence. This intensity distribution can be modified by coherence attenuation and absorption enhancement controlled by an external magnetic field. A second experiment with orthogonal circularly polarized states shows that the quantum coherence can be induced by two spatially separated laser beams and support our interpretation of our results for the hybrid VB experiment. Our results may have applications in optical manipulation, the measurement of magnetic fields, and the study of quantum coherence in atomic ensembles.
Abstract Vector vortex beams are widely concerned for their application prospects in various fields. Here we study the polarization rotation of hybrid-order vector vortex beam (HVVB) in hot atomic vapor both theoretically and experimentally. In this work, the HVVB is experimentally generated by combining two q-plates with a polarization beam splitter, and this method is verified by analyzing Jones vector based on the orthogonal circular polarization basis. We have experimentally investigated the polarization rotation of HVVB during the propagation in free space and atomic media. In free space, the polarization rotation characterized by rotation of horizontal components of the beams, has a limitation due to the effect of Gouy phase. In contrast, the polarization rotation angle in atomic media can break through this limitation due to the non-linearity and can be controlled by adjusting the relevant atomic parameters. The experimental results can be simulated by the theoretical model about cross-phase modulation of vector beams in a two-level atomic system.
Abstract The interaction between vector beams and atoms under a weak magnetic field could induce spatially dependent electromagnetically induced transparency (EIT). Based on such a coherence effect, we propose a method for manipulating vector beams carrying spiral varying phases in hot rubidium atoms. When a transverse magnetic field (TMF) is applied, the transparent regions of the transmitted beam are strongly depend on the beam’s polarization distribution. In addition to the intensity modulation, the alignment of the TMF is reflected in the rotation of the central symmetric transmission patterns. In theory, we discuss the physical mechanism of the spiral EIT region generated by the phase profile, and analyze the influence of system parameters on this coherent process. Our work confirms that introducing additional radial phases can also lead to spatially dependent EIT, which extends another degree of freedom to manipulate atomic polarization. This will provide potential applications in light field manipulation and multi-dimensional quantum storage.
Vector beams with spatially variant polarization have attracted much attention in recent years, with potential applications in both classical optics and quantum optics. In this work, we study a polarization selection of spatial intensity distribution by utilizing a hybridly polarized beam as a coupling beam and a circularly polarized beam as a probe beam in Rb87 atom vapor. We experimentally observe that the spatial intensity distribution of the probe beam after passing through atoms can be modulated by the hybridly polarized beam due to the optical pumping effect. Then, the information loaded in the probe beam can be designedly filtrated by an atomic system with a high extinction ratio. A detailed process of the optical pumping effect in our configurations and the corresponding absorption spectra are presented to interpret our experimental results, which can be used for the spatial optical information locally extracted based on an atomic system, which has potential applications in quantum communication and computation.
Abstract We have studied two-dimensional absorption, gain, and corresponding refractive index profiles in a ladder-type three-level atomic system interacting with three coherent fields. One is a weak probe field considered as a plane wave, while the other two are the control fields taken as two Laguerre–Gaussian doughnut beams. Position dependence of two vortex beams induces the spatially modulated coherence at the condition of resonance, which enables us to obtain space-dependent absorption, transparency, gain without inversion (GWI), and refractive index enhancement in the present scheme. The azimuthal modulation of coherence effects is attributed to the presence of optical angular momentum of the vortex beams. Under the influence of an additional travelling wave field with the presence of two vortex beams, the present model leads us to obtain an ultra-large enhancement of refractive index at the resonant detuning of the fields. This phenomenon makes the atom-field system to play the equivalent role of a high-refractive-index prism. The role of near dipole–dipole (NDD) interaction on the modulation of position-dependent coherence effects has also been investigated. It has been shown that, without any inclusion of the travelling wave field in the system, the phenomenon of resonant enhancement of refractive index may also occur in the presence of NDD effect. The new way of generating spatially controlled GWI and nonlinear refractive index enhancement is specific to the present model. This work seems to be useful for finding its applications in spatially modulated coherence controlled electromagnetically induced transparency-based quantum devices like quantum optical memory, switches, and quantum logic gates, where the refractive index switching phenomenon is a prerequisite.