Article
Materials Science, Multidisciplinary
Seung-Jun Kim, Jin-Hong Seok, In Cheol Yu, Jeong Hyeon Lee, Won Tae Kim, Bong-Rim Shin, Ga-Eun Yoon, Yun-Sang Lee, Jin Chul Kim, Woojin Yoon, Hoseop Yun, Mojca Jazbinsek, Sang Kyu Kwak, Fabian Rotermund, O-Pil Kwon
Summary: This work reports a series of new organic electro-optic salt crystals with unusual orthogonal dipole-coupling assembly that act as dimple-free THz generators. These crystals exhibit a wide THz absorption-free range from 1.5 to 4.0 THz, which is very beneficial for characterizing molecular phonon motions in THz spectroscopy.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Telecommunications
Jiancheng An, Chau Yuen, Chongwen Huang, Merouane Debbah, H. Vincent Poor, Lajos Hanzo
Summary: This Letter discusses the performance analysis and holographic beamforming techniques for holographic multiple-input multiple-output (HMIMO) communications. The spatial degrees of freedom (DoF) and ergodic capacity of a point-to-point HMIMO system are analyzed, along with the sum-rate analysis of multi-user HMIMO systems. Recent progress in holographic beamforming techniques for HMIMO scenarios is reviewed, and the spatial DoF and channel capacity are evaluated through numerical simulations.
IEEE COMMUNICATIONS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Krzysztof Sobucki, Wojciech Smigaj, Piotr Graczyk, Maciej Krawczyk, Pawel Gruszecki
Summary: We numerically demonstrate the excitation of leaky spin waves guided along a ferromagnetic stripe by obliquely incident spin wave beam on the edge of a thin film below the stripe. During propagation, leaky waves emit energy back into the layer as plane waves and laterally shifted parallel spin wave beams. This resonance excitation, combined with interference effects, leads to the magnonic Wood's anomaly and an increased Goos-Ha''nchen shift magnitude, providing a platform for controlling spin wave reflection and transdimensional magnonic routers.
Article
Telecommunications
Jiancheng An, Chau Yuen, Chongwen Huang, Merouane Debbah, H. Vincent Poor, Lajos Hanzo
Summary: This tutorial, in its first part, provides an overview of the fundamental concept of holographic multiple-input multiple-output (HMIMO) communications and reviews the recent progress in HMIMO channel modeling. It also presents efficient channel estimation approaches and demonstrates the statistical consistency of the new HMIMO channel model with conventional ones. Numerical results are provided to evaluate the performance of the channel estimators.
IEEE COMMUNICATIONS LETTERS
(2023)
Article
Telecommunications
Jiancheng An, Chau Yuen, Chongwen Huang, Merouane Debbah, H. Vincent Poor, Lajos Hanzo
Summary: This article introduces the unique properties and open challenges of holographic multiple-input multiple-output (HMIMO) technology, emphasizing the interplay between HMIMO and other emerging technologies in next-generation networks.
IEEE COMMUNICATIONS LETTERS
(2023)
Article
Optics
Pritam Pai, Jeroen Bosch, Matthias Kuhmayer, Stefan Rotter, Allard P. Mosk
Summary: The researchers introduced a new set of optical states called "scattering invariant modes", which have the same transmitted field pattern whether they scatter through a disordered sample or propagate ballistically through a homogeneous medium. These modes are weakly attenuated in dense scattering media and can be used to improve imaging inside scattering materials by correlating with ballistic light in simulations.
Article
Mechanics
Sagar Patankar, Saswata Basak, Ratul Dasgupta
Summary: By subjecting a liquid cylinder to a radial oscillatory body force, we have demonstrated the dynamic stabilisation of axisymmetric Fourier modes that are susceptible to the classical Rayleigh-Plateau instability. Viscosity is found to play a crucial role in this stabilisation process.
JOURNAL OF FLUID MECHANICS
(2022)
Article
Optics
Barak Hadad, Sahar Froim, Erez Yosef, Raja Giryes, Alon Bahabad
Summary: This tutorial provides a fundamental introduction to the utilization of deep learning in optics, catering specifically to newcomers, covering essential concepts, surveying the field, and providing guidelines for creating and deploying artificial neural network architectures tailored to optical problems.
Article
Engineering, Electrical & Electronic
Gai Zhou, Lin Sun, Chao Lu, Alan Pak Tao Lau
Summary: A new theoretical framework for optical communications based on Nonlinear Fourier Transform (NFT) and digital coherent transceivers is proposed to mitigate nonlinear distortions and improve detection performance by jointly modulating discrete eigenvalue lambda and b-coefficents b(lambda). The proposed multi-symbol DSP algorithms successfully achieved a record single-polarization discrete eigenvalue transmission of 64 Gb/s (net 54 Gb/s) over 1200 km in experiments.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Alexey A. Sokolik, Oleg Kotov, Yurii E. Lozovik
Summary: Confined modes at the edge of nonmagnetic anisotropic 2D materials inclined with respect to optical axes are studied using exact and approximated methods, focusing on dispersions, field, and charge density distributions, with the dominating contribution provided by evanescent 2D waves.
Article
Multidisciplinary Sciences
Liping Ye, Chunyin Qiu, Meng Xiao, Tianzi Li, Juan Du, Manzhu Ke, Zhengyou Liu
Summary: Dislocations in solid-state materials have a significant impact on wave propagation due to their topological properties. However, the experimental evidence supporting this observation has been lacking. In this study, the researchers used a 3D acoustic weak topological insulator with controllable dislocations to provide direct experimental evidence for the existence of one-dimensional topological dislocation modes.
NATURE COMMUNICATIONS
(2022)
Article
Optics
Ju Cheng, Na Liu, Luyang Guan, Dongdong Wang, Danshi Wang
Summary: Coherent digital combining technology using multiple small apertures has advantages over a single large aperture, including mitigation of fading under turbulence, scalability, and higher optical power collection. In this study, a complex-valued MIMO 4Nx2 widely linear equalizer is proposed to combine multi-aperture signals, and its feasibility is demonstrated through experiments.
Article
Physics, Multidisciplinary
Alberto Carrasco-Casado, Koichi Shiratama, Dimitar Kolev, Phuc V. Trinh, Tetsuharu Fuse, Shingo Fuse, Koji Kawaguchi, Yusuke Hashimoto, Masamitsu Hyodo, Takashi Sakamoto, Terufusa Kunisada, Morio Toyoshima
Summary: Being able to dynamically control the beam divergence of transmitted light is advantageous in free-space optical communications. NICT is developing versatile lasercom terminals that can adapt to different conditions, and has created a prototype beam-divergence control system to evaluate this technique.
FRONTIERS IN PHYSICS
(2022)
Article
Physics, Multidisciplinary
Y. Shimamoto, Y. Matsushima, T. Hasegawa, Y. Kousaka, I Proskurin, J. Kishine, A. S. Ovchinnikov, F. J. T. Goncalves, Y. Togawa
Summary: Chiral spin soliton lattices (CSL), which exhibit reconfigurability and controllability, can generate phononlike elementary excitations. In this study, higher-order magnetic resonance modes were observed in the CSL phase of a chiral helimagnet through experiments. The resonance frequency of the CSL phonon can be adjusted, making chiral helimagnets potentially useful for broadband signal processing in the millimeter-wave band.
PHYSICAL REVIEW LETTERS
(2022)
Article
Physics, Multidisciplinary
Hang Wu, Liao Chen, Xue-Wen Shu, Xin-Liang Zhang
Summary: This article introduces a new method to efficiently generate high-order orbital angular momentum (OAM) modes in fibers. A third-order OAM mode converter based on femtosecond microfabrication is proposed and fabricated, which provides a more stable and reliable way to generate high-order OAM modes. The effectiveness of this method is verified through experimental verification and simulation results.
ACTA PHYSICA SINICA
(2023)
News Item
Optics
David A. B. Miller
Article
Optics
Maziyar Milanizadeh, Fabio Toso, Giorgio Ferrari, Tigers Jonuzi, David A. B. Miller, Andrea Melloni, Francesco Morichetti
Summary: This paper discusses a method using a programmable mesh of Mach-Zehnder interferometers to automatically control the complex field radiated and captured by optical antennas. The method demonstrates functionalities including the generation of perfectly shaped beams, imaging through obstacles, and obstacle identification.
PHOTONICS RESEARCH
(2021)
Article
Neurosciences
David R. Miller, Ramsey Ashour, Colin T. Sullender, Andrew K. Dunn
Summary: This study demonstrates the ability of LSCI to continuously visualize blood flow during neurovascular procedures and provides different yet complementary information compared to ICGA.
Article
Optics
Maziyar Milanizadeh, SeyedMohammad SeyedinNavadeh, Francesco Zanetto, Vittorio Grimaldi, Christian De Vita, Charalambos Klitis, Marc Sorel, Giorgio Ferrari, David A. B. Miller, Andrea Melloni, Francesco Morichetti
Summary: This paper introduces a novel adaptive multibeam receiver that can separate and simultaneously detect multiple beams sharing the same wavelength and polarization in the optical domain. By using a programmable integrated photonic processor and a two-dimensional array of optical antennas, the separation of beam pairs with different directions and overlapping spatial modes is achieved.
LIGHT-SCIENCE & APPLICATIONS
(2022)
Article
Optics
Johannes Buetow, Joerg S. Eismann, Maziyar Milanizadeh, Francesco Morichetti, Andrea Melloni, David A. B. Miller, Peter Banzer
Summary: Photonic integrated circuits, especially those based on reconfigurable Mach-Zehnder interferometer meshes, are crucial in various applications. They enable active processing of light and meet the demands of communication, signal processing, information processing, and sensor applications. This study utilizes a reconfigurable photonic integrated circuit to create a spatially resolving detector for amplitudes and phases of an electromagnetic field distribution, achieved by optically sampling free-space beams and processing the light within the photonic mesh of interferometers. The developed versatile method for calibration and operation works in a wide parameter range, even beyond the design wavelength.
Article
Multidisciplinary Sciences
David A. B. Miller
Summary: This study demonstrates the importance of thickness in optical systems in addition to width or area. By understanding the specific function of the optical system, the minimum required thickness can be calculated based on diffraction and overlapping nonlocality C. This finding has broad applications in optics, including cameras and metasurfaces.
Article
Multidisciplinary Sciences
Anqi Ji, Jung-Hwan Song, Qitong Li, Fenghao Xu, Ching-Ting Tsai, Richard C. Tiberio, Bianxiao Cui, Philippe Lalanne, Pieter G. Kik, David A. B. Miller, Mark L. Brongersma
Summary: Phase contrast microscopy is a crucial tool in modern biology, geology, and nanotechnology. In this article, a new approach using a guided-mode-resonator metasurface is proposed for phase contrast imaging. The addition of this non-local metasurface to a conventional microscope enables high-precision quantitative phase contrast imaging.
NATURE COMMUNICATIONS
(2022)
Meeting Abstract
Ophthalmology
Hao Zhang, Ian Rubinoff, David Andrew Miller, Roman Kuranov
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Meeting Abstract
Ophthalmology
Brian Soetikno, David Andrew Miller, Hao Zhang, Jeffrey L. Goldberg, Theodore Leng, Alfredo Dubra
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Meeting Abstract
Ophthalmology
Liang Li, Fang Fang, Xue Feng, Shaobo Zhang, David Andrew Miller, Pei Zhuang, Haoliang Huang, Pingting Liu, Junting Liu, Nripun Sredar, Liang Liu, Yang Sun, Xin Duan, Jeffrey L. Goldberg, Hao Zhang, Yang Hu
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Meeting Abstract
Ophthalmology
David Andrew Miller, Marta Grannonico, Mingna Liu, Kara McHaney, Elise Savier, Alev Erisir, Xiaorong Liu, Hao Zhang
INVESTIGATIVE OPHTHALMOLOGY & VISUAL SCIENCE
(2022)
Proceedings Paper
Engineering, Electrical & Electronic
David A. B. Miller
Summary: Silicon photonics enable complex optical circuits for communication, sensing, classical and quantum information processing. Specific interferometric mesh architectures allow self-configuring and self-stabilizing circuits to operate in real time with little or no calculation, opening up new possibilities for sophisticated and highly functional optics.
2021 IEEE 17TH INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS (GFP 2021)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
SeyedMohammad SeyedinNavadeh, Maziyar Milanizadeh, Giorgia Benci, Christian De Vita, Charalambos Klitis, Marc Sorel, Francesco Zanetto, Vittorio Grimaldi, Giorgio Ferrari, David A. B. Miller, Andrea Melloni, Francesco Morichetti
Summary: A self-configuring mesh of silicon Mach-Zehnder Interferometers is used to receive two spatially overlapped orthogonal beams modulated at 10 Gbit/s. These beams, sharing the same wavelength and state of polarization, are separated with more than 30 dB isolation and sorted out without signal degradation.
2021 IEEE 17TH INTERNATIONAL CONFERENCE ON GROUP IV PHOTONICS (GFP 2021)
(2021)
Proceedings Paper
Engineering, Electrical & Electronic
David A. B. Miller
Summary: Integrating optical physics and well-chosen devices can enable dense, low-energy communications by eliminating receiver, time-multiplexing, and timing circuits through optical parallelism and timing precision.
2021 OPTICAL FIBER COMMUNICATIONS CONFERENCE AND EXPOSITION (OFC)
(2021)
Article
Quantum Science & Technology
David Awschalom, Karl K. Berggren, Hannes Bernien, Sunil Bhave, Lincoln D. Carr, Paul Davids, Sophia E. Economou, Dirk Englund, Andrei Faraon, Martin Fejer, Saikat Guha, Martin Gustafsson, Evelyn Hu, Liang Jiang, Jungsang Kim, Boris Korzh, Prem Kumar, Paul G. Kwiat, Marko Loncar, Mikhail D. Lukin, David A. B. Miller, Christopher Monroe, Sae Woo Nam, Prineha Narang, Jason S. Orcutt, Michael G. Raymer, Amir H. Safavi-Naeini, Maria Spiropulu, Kartik Srinivasan, Shuo Sun, Jelena Vuckovic, Edo Waks, Ronald Walsworth, Andrew M. Weiner, Zheshen Zhang
Summary: Quantum interconnects (QuICs) face special challenges in transferring fragile quantum states, and the diversity of QIT platforms in different fields presents additional challenges for building the quantum internet. As quantum systems scale up, the quantum interconnect bottleneck emerges as a major challenge for QIT.