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

Journal of the Optical Society of America B

Optically induced reconfigurable Kagome photonic lattice assisted by a liquid crystal spatial light modulator

Shun Ke Liang, Zhenzhi Liu, Jiawei Yu, Qingsong Yu, Shaohuan Ning, Yanpeng Zhang, Zhaoyang Zhang

Published May 9, 2023• 3 citations
Publisher

Abstract

A 2D Kagome photonic lattice possesses special band structures involving a flat band that allows the localization state and Dirac cones that show linear dispersion. Here, we report the construction of an instantaneously reconfigurable electromagnetically induced Kagome lattice in a Λ-type 85 Rb atomic configuration theoretically and experimentally under the condition of electromagnetically induced transparency, which is excited by a weak Gaussian probe field and a strong coupling field with a Kagome intensity profile. The incident Gaussian probe field is discretely diffracted into a Kagome profile inside the atomic vapor cell with a spatially modulated susceptibility, which is induced by the structured coupling field generated by a liquid crystal spatial light modulator. We also explored the dynamical evolution of the probe field inside the Kagome photonic lattice by manipulating systematic parameters. This current work provides an alternative way to design instantaneously reconfigurable Kagome photonic lattices with a simplified experimental configuration. The instantaneous tunability may help to promote the discovery of underlying beam dynamics and the design of tunable devices relying on the properties of Kagome photonic structures.

DOI
10.1364/josab.488925

Related papers

Optically-Induced Symmetry Switching in a Reconfigurable Kagome Photonic Lattice: From Flatband to Type-III Dirac Cones

Qingsong Yu, Zhenzhi Liu, Guo Dawei +3 more

We demonstrate the transition of band structure from flatband to type-III Dirac cones in an electromagnetically induced Kagome photonic lattice generated in a three-level Λ-type 85Rb atomic configuration both experimentally and theoretically. Such instantaneously reconfigurable Kagome photonic lattice with flatband is “written” by a strong coupling field possessing a Kagome intensity distribution, which can modulate the refractive index of atomic vapors in a spatially periodical manner under electromagnetically induced transparency. By introducing an additional one-dimensional periodic coupling field to cover any one set of the three inequivalent sublattices of the induced Kagome photonic lattice, the dispersion-less energy band can evolve into type-III Dirac cones with linear dispersion by easily manipulating the intensity of the one-dimensional field. Our results may pave a new route to engineer in situ reconfigurable photonic structures with type-III Dirac cones, which can act as promising platforms to explore the underlying physics and beam dynamics.

Nanomaterials•Sep 16, 2022•6 citations

Experimental realization of a reconfigurable Lieb photonic lattice in a coherent atomic medium

Shun Ke Liang, Zhenzhi Liu, Shaohuan Ning +2 more

We have experimentally demonstrated the realization of an instantaneously reconfigurable Lieb photonic lattice with a flatband in a three-level Λ-type rubidium atomic configuration. Such a coherently controllable Lieb photonic lattice is optically induced by a coupling field possessing a spatially periodic intensity distribution (generated via a spatial light modulator) under the condition of electromagnetically induced transparency. The incident weak Gaussian probe field can experience discrete diffraction and the observed probe beam at the output surface of the medium exhibits the same Lieb pattern, verifying the formation of the refractive index with a Lieb profile inside the atomic vapor cell. The potential wells and the band structure of the Lieb photonic lattice can be effectively manipulated by easily tuning the frequency of the involved laser beams. The current work can promisingly pave the way for exploring the exotic dynamics as well as tunable photonic devices in Lieb photonic lattices.

Optics Letters•Jan 4, 2023•8 citations

Experimental Realization of an Electromagnetically Induced Binary Photonic Lattice With Tunable Flat Band

Shaohuan Ning, Yongping Huang, Jiaqi Yuan +5 more

We experimentally and theoretically demonstrate an electromagnetically induced binary photonic lattice with an instantaneously tunable flat band in a three-level85Rb atomic configuration. The transmitted binary patterns result from the diffraction of an injected Gaussian probe beam through the atomic vapor cell, in which the refractive index is modulated by a binary coupling field with alternating high- and low-intensity peaks under electromagnetically induced transparency. The binary coupling field is established by spatially superimposing two standing-wave fields whose periods differ by a factor of two. The transmitted patterns and the flat band can be readily modulated via controllable atomic coherence. Crucially, by tuning the Rabi frequencies to engineer the refractive index contrast, instantaneous switching of the flat band is achieved. This investigation provides a new method for producing tunable binary photonic lattices, which can serve as a promising platform for investigating the dynamical evolutions of wave packets.

IEEE Photonics Technology Letters•Sep 29, 2025•1 citation

Experimental Realization of Reconfigurable Photonic Lattices in Coherent Rydberg Atomic Vapors

Shun Ke Liang, Qingsong Yu, Xing Lei +4 more

We experimentally demonstrated the formation of a one-dimensional electromagnetically induced optical lattice in coherently prepared three-level 85Rb Rydberg atomic vapors with electromagnetically induced transparency (EIT). The one-dimensional photonic lattice was optically induced by a coupling field with a spatially periodical intensity distribution deriving from the interference of two strong Gaussian beams from the same laser source (~480 nm). Under the Rydberg-EIT condition, the incident weak probe beam can feel a tunable spatially modulated susceptibility, which is verified by the controllable discrete diffraction pattern observed at the output plane of the vapor cell. This investigation not only opens the door for experimentally introducing the strong interaction between Rydberg atoms to govern the beam dynamics in photonic lattices based on atomic coherence but also provides an easily accessible periodic environment for exploring Rydberg-atom physics and related applications.

Photonics•Jun 16, 2022•4 citations

Reconfigurable Photonic Lattices Based on Atomic Coherence

Jiaqi Yuan, Shun Ke Liang, Qingsong Yu +4 more

Abstract The array of coupled optical waveguides, which is also viewed as a photonic lattice, can exhibit abundant photonic band structures depending on the desired spatial arrangements of involved waveguides. Studies of photonic lattices are usually performed in solid‐state materials, where the required periodic susceptibilities can be achieved by employing the femtosecond laser direct‐writing or optical induction method, and have spawned flourishing achievements in manipulating the behaviors of light. Recently, the concept of electromagnetically induced photonic lattice (EIPL) is proposed under the well‐known electromagnetically induced transparency (EIT) in coherently prepared multilevel alkali‐metal atomic systems, where the strong coupling beams producing EIT possess spatially periodic intensity profiles. The inherited instantaneous tunability of susceptibility from EIT‐modulated atomic coherence allows for the easy reconfigurability of EIPLs, which gives rise to exotic beam dynamics under such a readily controllable framework. This paper summarizes the historical overview and recent advances of the in situ and all‐optically reconfigurable EIPLs. The Introduction section provides the scheme and formation of the EIPL via atomic coherence. The following sections review the recently demonstrated dynamical properties of light in various 1D and 2D EIPLs and in compound EIPLs built by two coupling fields. The final section gives brief concluding remarks.

Advanced Physics Research•Oct 19, 2024•8 citations

Phase difference induced curved photonic lattice in atomic vapors

Yutong Shen, Yongping Huang, Jiaqi Yuan +5 more

As an optical structure characterized by modulations in both transverse and longitudinal directions, the curved photonic lattice has been widely utilized to mimic the behaviors of electrons that are challenging to observe directly. Within the framework of quantum-optical analogies, such a mimicking approach offers additional degrees of freedom for manipulating the dynamics of light. Here, we report the realization of curved photonic lattices in atomic vapors by employing the phase difference in a two-beam interference configuration. The phase difference is introduced via an electro-optic modulator. A weak Gaussian probe field is sent into the curved photonic lattice to image the constructed structure in the context of electromagnetically induced transparency both experimentally and theoretically. In the case of sinusoidal modulation of the phase difference, the transverse oscillation of the output probe pattern is observed clearly, indicating the instantaneous and accurate control of the curved photonic lattice. It is also found that the modulation frequency can play an important role in synthesizing flat bands. This work not only presents a convenient way for producing curved photonic lattices with reconfigurability, but also puts forward a promising platform to investigate quantum-optical analogies in atomic vapors.

Frontiers of Physics•Jan 1, 2025•4 citations
A 2D Kagome photonic lattice possesses special band structures involving a flat band that allows the localization state and Dirac cones that show linear dispersion. Here, we report the construction of an instantaneously reconfigurable electromagnetically induced Kagome lattice in a Λ-type 85 Rb atomic configuration theoretically and experimentally under the condition of electromagnetically induced transparency, which is excited by a weak Gaussian probe field and a strong coupling field with a Kagome intensity profile. The incident Gaussian probe field is discretely diffracted into a Kagome profile inside the atomic vapor cell with a spatially modulated susceptibility, which is induced by the structured coupling field generated by a liquid crystal spatial light modulator. We also explored the dynamical evolution of the probe field inside the Kagome photonic lattice by manipulating systematic parameters. This current work provides an alternative way to design instantaneously reconfigurable Kagome photonic lattices with a simplified experimental configuration. The instantaneous tunability may help to promote the discovery of underlying beam dynamics and the design of tunable devices relying on the properties of Kagome photonic structures.
We demonstrate the transition of band structure from flatband to type-III Dirac cones in an electromagnetically induced Kagome photonic lattice generated in a three-level Λ-type 85Rb atomic configuration both experimentally and theoretically. Such instantaneously reconfigurable Kagome photonic lattice with flatband is “written” by a strong coupling field possessing a Kagome intensity distribution, which can modulate the refractive index of atomic vapors in a spatially periodical manner under electromagnetically induced transparency. By introducing an additional one-dimensional periodic coupling field to cover any one set of the three inequivalent sublattices of the induced Kagome photonic lattice, the dispersion-less energy band can evolve into type-III Dirac cones with linear dispersion by easily manipulating the intensity of the one-dimensional field. Our results may pave a new route to engineer in situ reconfigurable photonic structures with type-III Dirac cones, which can act as promising platforms to explore the underlying physics and beam dynamics.
We have experimentally demonstrated the realization of an instantaneously reconfigurable Lieb photonic lattice with a flatband in a three-level Λ-type rubidium atomic configuration. Such a coherently controllable Lieb photonic lattice is optically induced by a coupling field possessing a spatially periodic intensity distribution (generated via a spatial light modulator) under the condition of electromagnetically induced transparency. The incident weak Gaussian probe field can experience discrete diffraction and the observed probe beam at the output surface of the medium exhibits the same Lieb pattern, verifying the formation of the refractive index with a Lieb profile inside the atomic vapor cell. The potential wells and the band structure of the Lieb photonic lattice can be effectively manipulated by easily tuning the frequency of the involved laser beams. The current work can promisingly pave the way for exploring the exotic dynamics as well as tunable photonic devices in Lieb photonic lattices.
We experimentally and theoretically demonstrate an electromagnetically induced binary photonic lattice with an instantaneously tunable flat band in a three-level85Rb atomic configuration. The transmitted binary patterns result from the diffraction of an injected Gaussian probe beam through the atomic vapor cell, in which the refractive index is modulated by a binary coupling field with alternating high- and low-intensity peaks under electromagnetically induced transparency. The binary coupling field is established by spatially superimposing two standing-wave fields whose periods differ by a factor of two. The transmitted patterns and the flat band can be readily modulated via controllable atomic coherence. Crucially, by tuning the Rabi frequencies to engineer the refractive index contrast, instantaneous switching of the flat band is achieved. This investigation provides a new method for producing tunable binary photonic lattices, which can serve as a promising platform for investigating the dynamical evolutions of wave packets.
We experimentally demonstrated the formation of a one-dimensional electromagnetically induced optical lattice in coherently prepared three-level 85Rb Rydberg atomic vapors with electromagnetically induced transparency (EIT). The one-dimensional photonic lattice was optically induced by a coupling field with a spatially periodical intensity distribution deriving from the interference of two strong Gaussian beams from the same laser source (~480 nm). Under the Rydberg-EIT condition, the incident weak probe beam can feel a tunable spatially modulated susceptibility, which is verified by the controllable discrete diffraction pattern observed at the output plane of the vapor cell. This investigation not only opens the door for experimentally introducing the strong interaction between Rydberg atoms to govern the beam dynamics in photonic lattices based on atomic coherence but also provides an easily accessible periodic environment for exploring Rydberg-atom physics and related applications.
Abstract The array of coupled optical waveguides, which is also viewed as a photonic lattice, can exhibit abundant photonic band structures depending on the desired spatial arrangements of involved waveguides. Studies of photonic lattices are usually performed in solid‐state materials, where the required periodic susceptibilities can be achieved by employing the femtosecond laser direct‐writing or optical induction method, and have spawned flourishing achievements in manipulating the behaviors of light. Recently, the concept of electromagnetically induced photonic lattice (EIPL) is proposed under the well‐known electromagnetically induced transparency (EIT) in coherently prepared multilevel alkali‐metal atomic systems, where the strong coupling beams producing EIT possess spatially periodic intensity profiles. The inherited instantaneous tunability of susceptibility from EIT‐modulated atomic coherence allows for the easy reconfigurability of EIPLs, which gives rise to exotic beam dynamics under such a readily controllable framework. This paper summarizes the historical overview and recent advances of the in situ and all‐optically reconfigurable EIPLs. The Introduction section provides the scheme and formation of the EIPL via atomic coherence. The following sections review the recently demonstrated dynamical properties of light in various 1D and 2D EIPLs and in compound EIPLs built by two coupling fields. The final section gives brief concluding remarks.
As an optical structure characterized by modulations in both transverse and longitudinal directions, the curved photonic lattice has been widely utilized to mimic the behaviors of electrons that are challenging to observe directly. Within the framework of quantum-optical analogies, such a mimicking approach offers additional degrees of freedom for manipulating the dynamics of light. Here, we report the realization of curved photonic lattices in atomic vapors by employing the phase difference in a two-beam interference configuration. The phase difference is introduced via an electro-optic modulator. A weak Gaussian probe field is sent into the curved photonic lattice to image the constructed structure in the context of electromagnetically induced transparency both experimentally and theoretically. In the case of sinusoidal modulation of the phase difference, the transverse oscillation of the output probe pattern is observed clearly, indicating the instantaneous and accurate control of the curved photonic lattice. It is also found that the modulation frequency can play an important role in synthesizing flat bands. This work not only presents a convenient way for producing curved photonic lattices with reconfigurability, but also puts forward a promising platform to investigate quantum-optical analogies in atomic vapors.