Article
Physics, Multidisciplinary
Wenguo Zhu, Huadan Zheng, Yongchun Zhong, Jianhui Yu, Zhe Chen
Summary: This research demonstrates a novel wave-vector-varying PB phase that naturally arises in transmission and reflection processes for paraxial beams with small incident angles. This new photonic spin Hall effect can address the contradiction between spin separation and energy efficiency in the conventional PSHE.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Aditya Tripathi, Anastasiia Zalogina, Jiayan Liao, Matthias Wurdack, Eliezer Estrecho, Jiajia Zhou, Dayong Jin, Sergey S. Kruk, Yuri Kivshar
Summary: We demonstrate the effect of spin-momentum locking on upconversion photoluminescence emitted from rare-earth doped nanocrystals coupled to a phase-gradient dielectric metasurface. Different directionalities for left and right circular polarized light are observed, which can be attributed to the photonic Rashba effect that leads to a spin-dependent splitting of emitted light in momentum space.
Article
Engineering, Electrical & Electronic
Junhui Cao, Alexey Kavokin, Anton Nalitov
Summary: We introduce the concept of gap Zak or Chern topological invariants for photonic crystals of different dimensionalities, specifically focusing on interface states formed at the interface of two semi-infinite Bragg mirrors. We derive the formulism for the gap Zak phases of the constituent Bragg mirrors and demonstrate the instrumental role of gap topological numbers in the study of interface states in both conventional and photonic crystals.
PROGRESS IN ELECTROMAGNETICS RESEARCH-PIER
(2022)
Article
Nanoscience & Nanotechnology
Erik Petrovish Navarro-Baron, Herbert Vinck-Posada, Alejandro Gonzalez-Tudela
Summary: Dirac energy dispersions in realistic structures can lead to effective photon-mediated interactions in quantum emitters, with a trade-off between interaction strength and range. The polarization degree of freedom can also affect the nature of collective interactions near photonic Dirac points. These results improve our understanding of Dirac light-matter interfaces and can guide future experimental designs.
Article
Physics, Multidisciplinary
Ze-Guo Chen, Ruo-Yang Zhang, C. T. Chan, Guancong Ma
Summary: This study demonstrates the realization of non-Abelian braiding of multiple degenerate acoustic waveguide modes, exploring the dynamics and geometric phase variations. By switching the order of different braiding processes, the non-Abelian characteristics are revealed.
Article
Multidisciplinary Sciences
Xiaoyang Duan, Bo Wang, Kexiu Rong, Chieh-Li Liu, Vladi Gorovoy, Subhrajit Mukherjee, Vladimir Kleiner, Elad Koren, Erez Hasman
Summary: The researchers have demonstrated a room-temperature valley-addressable tungsten disulfide monolayer laser where the spin of lasing can be controlled by the spin of the pump without the need for magnetic fields. By manipulating the spin-valley coupling, this nanophotonic platform provides versatile coherent spin-light sources that can operate at room temperature.
Article
Materials Science, Multidisciplinary
Priyadarshini Kapri, Bashab Dey, Tarun Kanti Ghosh
Summary: The study focuses on spin currents in 2D Rashba spin-orbit coupled systems and 3D noncentrosymmetric metals. The behavior of spin currents varies in 2D systems, while in 3D systems, the spin currents change differently with Fermi energy.
Article
Materials Science, Multidisciplinary
Alessio Calzona, Niccolo Traverso Ziani, Matteo Carrega, Maura Sassetti
Summary: In the context of one-dimensional fermionic systems, helical Luttinger liquids can be manipulated by means of electrostatic gates, and a heterostructure composed of them can be used as a tunable thermal valve. The modulation of the thermal conductance achieved by this device can reach around 7% for experimentally relevant parameters. A modification in the geometry of the gate can lead to particular temperature dependencies related to interference effects.
Article
Engineering, Electrical & Electronic
Rongfeng Zhang, Hongwei Yang, Huifeng Chen, Wenguo Zhu, Huadan Zheng, Jianhui Yu, Yongchun Zhong, Zhe Chen
Summary: Research shows that a tiny incident angle can lead to wave-vector-varying Pancharatnam-Berry phases, resulting in high-performance photonic spin Hall effect in optical elements with rotation symmetry. Investigating photonic crystal slabs of square lattices, it has been demonstrated that the C-4 nu symmetry of the slabs enables giant PSHE even with a small incident angle. The guided-mode resonances of the subwavelength-thickness slab enhance the PSHE, allowing for a wide range of spin separation adjustments.
IEEE PHOTONICS JOURNAL
(2022)
Review
Optics
Shunfa Liu, Kartik Srinivasan, Jin Liu
Summary: This article reviews the working principles of several nanoscale positioning methods and the latest progress in this field, as well as discusses the challenges in applying these methods to different material systems and the opportunities for realizing large-scale quantum photonic devices.
LASER & PHOTONICS REVIEWS
(2021)
Article
Physics, Applied
Maryam Sharifi, Behrooz Rezaei, Hamid Pashaei Adl, Mohammad Sadegh Zakerhamidi
Summary: In this paper, the transmission properties of a structure composed of a topological one-dimensional photonic crystal (1D PhC) heterostructure and a conventional 1D PhC with an indium-antimonide (InSb) defect layer are investigated theoretically. Fano resonance can be achieved by coupling the defect mode with the topological edge state mode supported by the topological PhC. Numerical results show a narrow Fano resonance in the transmission spectrum when an external magnetic field is applied to the InSb defect layer. The optical properties of the InSb defect layer and the Fano resonance can be dynamically controlled by changing the applied external magnetic field. These findings have implications for optical devices such as filters, sensors, and switches.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Optics
R. A. Ribeiro, A. A. Matoso, L. E. Oxman, A. Z. Khoury, S. Padua
Summary: Fractional topological phase (FTP) in twoqudit photonic systems shows robustness to dephasing noise, which is experimentally observed. This robustness is achieved through hyperentangled photon pairs and theoretical description via Kraus maps, implemented experimentally with a spatial light modulator. FTP is a promising candidate for quantum processing and communication applications.
Article
Quantum Science & Technology
Long Chen, Jian Wei You, Ze Gu, Qian Ma, Tie Jun Cui
Summary: This study develops an analog quantum bit based on Pancharatnam-Berry phase metasurfaces. It not only provides a theoretical foundation to go beyond the information limit of classical bits but also develops a feasible physics platform to investigate quantum information science.
ADVANCED QUANTUM TECHNOLOGIES
(2023)
Article
Optics
Lin Zhu, Chun-Ting Xu, Peng Chen, Yi-Heng Zhang, Si-Jia Liu, Quan-Ming Chen, Shi-Jun Ge, Wei Hu, Yan-Qing Lu
Summary: This work proposes an innovative scheme based on opposite-chirality-coexisted superstructures to simultaneously modulate orthogonal circular polarization and achieve PB phase reversal. By refilling cholesteric liquid crystal into a washed-out polymer network with opposite chirality and delicate photo-patterned structures, specific optical phenomena can be efficiently generated.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Physics, Multidisciplinary
Daniel Varjas, Ahmed Abouelkomsan, Kang Yang, Emil J. Bergholtz
Summary: Band geometry plays a significant role in topological lattice models, and the Berry curvature usually fluctuates in reciprocal space. However, lattice models with three or more degrees of freedom per unit cell can support exactly constant Berry curvature. Nevertheless, maintaining constant Berry curvature does not always enhance the properties of fractional Chern insulator states.
Article
Multidisciplinary Sciences
Tomer Stav, Arkady Faerman, Elhanan Maguid, Dikla Oren, Vladimir Kleiner, Erez Hasman, Mordechai Segev
Article
Optics
Michael Yannai, Elhanan Maguid, Arkady Faerman, Qitong Li, Jung-Hwan Song, Vladimir Kleiner, Mark L. Brongersma, Erez Hasman
Article
Nanoscience & Nanotechnology
Fengliang Dong, Hans Feng, Lihua Xu, Bo Wang, Zhiwei Song, Xianfen Zhang, Lanqin Yan, Xiaojun Li, Yi Tian, Wentao Wang, Lianfeng Sun, Yan Li, Weiguo Chu
Article
Physics, Multidisciplinary
Bo Wang, Elhanan Maguid, Kexiu Rong, Michael Yannai, Vladimir Kleiner, Erez Hasman
PHYSICAL REVIEW LETTERS
(2019)
Article
Nanoscience & Nanotechnology
Bo Wang, Kexiu Rong, Elhanan Maguid, Vladimir Kleiner, Erez Hasman
NATURE NANOTECHNOLOGY
(2020)
Article
Physics, Multidisciplinary
Yan-Jun Qian, Hui Liu, Qi-Tao Cao, Julius Kullig, Kexiu Rong, Cheng-Wei Qiu, Jan Wiersig, Qihuang Gong, Jianjun Chen, Yun-Feng Xiao
Summary: A phase-space tailoring scheme is reported for deterministic and in situ regulation of photon transport in a chaotic microcavity, improving quality factors and controlling emission direction. This work opens up possibilities for studying chaotic physics in real time and enables advanced applications like arbitrary light routing and on-chip lasers.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
Kexiu Rong, Xiaoyang Duan, Bo Wang, Dror Reichenberg, Assael Cohen, Chieh-li Liu, Pranab K. Mohapatra, Avinash Patsha, Vladi Gorovoy, Subhrajit Mukherjee, Vladimir Kleiner, Ariel Ismach, Elad Koren, Erez Hasman
Summary: The authors introduce a spin-optical laser based on a monolayer transition metal dichalcogenide coupled to a heterostructure microcavity supporting high-Q spin-valley resonances originating from photonic Rashba-type spin splitting of a bound state in the continuum. The Rashba monolayer laser exhibits intrinsic spin polarizations, high spatial and temporal coherence, and inherent symmetry-enabled robustness features, allowing for valley coherence in the WS2 monolayer under arbitrary pump polarizations at room temperature. Our monolayer-integrated spin-valley microcavities pave the way for further exploration of classical and non-classical coherent spin-optical light sources involving both electron and photon spins.
Article
Multidisciplinary Sciences
Xiaoyang Duan, Bo Wang, Kexiu Rong, Chieh-Li Liu, Vladi Gorovoy, Subhrajit Mukherjee, Vladimir Kleiner, Elad Koren, Erez Hasman
Summary: The researchers have demonstrated a room-temperature valley-addressable tungsten disulfide monolayer laser where the spin of lasing can be controlled by the spin of the pump without the need for magnetic fields. By manipulating the spin-valley coupling, this nanophotonic platform provides versatile coherent spin-light sources that can operate at room temperature.
Review
Chemistry, Multidisciplinary
Jianjun Chen, Kexiu Rong
Summary: Colloidal quantum dots (CQDs) have emerged as a powerful platform for solution-processed photonic and optoelectronic devices, offering cost-effective synthesis and impressive photostability. Through novel material and structure engineering, CQD-based devices present appealing alternatives to costly semiconductor products and enable the construction of nanophotonic circuits for various applications. Further developments and challenges in CQD-based nanophotonic devices and circuits are also outlined.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Chemistry, Multidisciplinary
Kexiu Rong, Hui Liu, Kebin Shi, Jianjun Chen
