Article
Optics
K. Koksal, M. Babiker, V. E. Lembessis, J. Yuan
Summary: An orthonormal set of optical vortex modes, named the polarized truncated optical Bessel (TOB) set, is proposed and identified. This set of modes possesses both orbital and spin angular momentum and can be realized by placing a circular aperture in the path of an optical Bessel beam.
Article
Optics
Hibiki Kagami, Tomohiro Amemiya, Sho Okada, Yahui Wang, Nobuhiko Nishiyama, Xiao Hu
Summary: This paper proposes a method for selectively propagating optical vortex modes with specific charge numbers in a photonic integrated circuit (PIC) using a topological photonic system. By performing appropriate band tuning, a specific electromagnetic mode can be excited in the topological waveguide, allowing for the propagation of optical vortex modes over a wide range in the C band.
Article
Chemistry, Physical
Chenglong Jia, Min Chen, Alexander F. Schaeffer, Jamal Berakdar
Summary: Antiferromagnetic materials provide a platform for ultrafast information processing with low cross-talks and compatibility with existing technology. Predicted chiral magnonic eigenmodes in AFM waveguides can be used for multiplex magnonic computing.
NPJ COMPUTATIONAL MATERIALS
(2021)
Article
Physics, Applied
Shaohua Yuan, Chaowei Sui, Jiyong Kang, Chenglong Jia
Summary: In this study, we propose a magnonic type of Bloch sphere based on twisted spin-wave eigenmodes. The chiral degeneracy of magnons can be released by certain interactions, allowing for precise launching and electrical detection.
APPLIED PHYSICS LETTERS
(2022)
Article
Optics
Sheng Yu, Kai Zhang, Yanbo Lou, Shengshuai Liu, Jietai Jing
Summary: In this article, the experimental generation of entanglement with flexible reconfigurable topological charges in six continuous-variable orbital angular momentum modes is achieved. The scheme allows for the redistribution of entangled modes among quantum channels, providing a flexible platform for constructing reconfigurable continuous-variable quantum communication networks.
LASER & PHOTONICS REVIEWS
(2023)
Article
Physics, Applied
Qiao Jiang, Hong Xiang, Dezhuan Han
Summary: This study proposes a method to design a plasmonic metasurface that can control the generation and superposition of surface plasmon polariton (SPP) vortices, demonstrating that the superposition of SPP vortices can be accurately controlled by the polarization states of the incidence, providing a feasible way to design miniaturized photonic devices.
APPLIED PHYSICS LETTERS
(2021)
Article
Optics
Xiang-Yu Zeng, Yu-Qin Zhang, Rui-Rui Zhang, Xiao-Rong Ren, Zi-Jun Zhan, Man-Na Gu, Rui Sun, Chun-Xiang Liu, Chuan-Fu Cheng
Summary: Metasurfaces with orthogonal nano-slit pairs arranged on spirals are proposed to generate vector beams of Bell-like states and slanted polarizations. The design is based on the theoretically derived parameter condition for manipulation of the two vector vortex modes, satisfied by matching the rotation order m, the spiral order n, and incident polarization helicity sigma. Linear polarization states of the vector beams are controlled by the initial orientation angle of slit pairs.
Article
Optics
Yujia Wu, Haigang Liu, Xianfeng Chen
Summary: This study introduces a method for measuring optical near-infrared vortex modes with frequency upconversion, which can convert a near-infrared beam into a visible beam. The number and orientation of fringes of the second harmonic intensity patterns are used to measure the optical near-infrared vortex modes. This proposed method offers a convenient and flexible way to measure different OAM of vortex beams, with potential applications in various circumstances involving vortex modes.
Article
Materials Science, Multidisciplinary
Runzhe Zhang, Yinghui Guo, Xiaoyin Li, Qiong He, Qi Zhang, Fei Zhang, Mingfeng Xu, Maoyu Wang, Mingbo Pu, Xiangang Luo
Summary: Distinct from conventional optical lenses, the superoscillatory lens offers an alternative approach for sub-diffraction focusing in microscopy and telescopy. In this study, an angular superoscillatory metalens (ASOM) is demonstrated by combining superoscillatory and angular metalens phases. The ASOM can map orbital angular modes into focusing patterns at the focal plane with different azimuth angles, allowing for the determination of the OAM spectrum with a single-shot measurement. This study shows an improved OAM resolution compared to normal angular metalenses, potentially advancing the development of integrated and high-dimensional optical and quantum systems.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Optics
Yan Wu, Jianxiang Wen, Mengdi Zhang, Jing Wen, Wei Chen, Xiaobei Zhang, Fufei Pang, Fengzai Tang, Geoff West, Tingyun Wang
Summary: In this study, we explored an orbital angular momentum (OAM) amplifier that can amplify 10 vortex modes under different-order OAM pump modes. The experimental results showed that high mode gains and purities, as well as low noise figures, can be achieved when the signal-mode profiles are well matched to the pump-mode profiles. The research results indicate that this OAM amplifier exhibits low noise and high purity characteristics under configurable pump modes in the C-band, making it promising for long-distance mode division multiplexing (MDM) and mitigating the upcoming capacity crunch in optical fiber communication.
Article
Optics
Zhibing Liu, Jiahui Zou, Zhaoyu Lai, Jiajing Tu, Shecheng Gao, Weiping Liu, Zhaohui Li
Summary: This paper analyzed the distortion of Optical Coordinate Transformation (OCT) in the field of orbital angular momentum (OAM) (de)multiplexing or manipulation, proposed an optimization scheme to improve the distortion, and validated the effectiveness of the method through experiments using phase masks realized by metasurfaces.
Article
Physics, Applied
Kaixiang Cheng, Zexu Liu, Zheng-Da Hu, Guoyang Cao, Jingjing Wu, Jicheng Wang
Summary: This study demonstrates an all-dielectric metasurface based on a geometric phase for generating perfect vortex (PV) beams with different topological charges. The metasurface, which is ultra-thin and flexible, has the potential for a wide range of applications in manipulating circularly polarized light.
APPLIED PHYSICS LETTERS
(2022)
Article
Multidisciplinary Sciences
Lu Chen, Wenqi Zhu, Pengcheng Huo, Junyeob Song, Henri J. Lezec, Ting Xu, Amit Agrawal
Summary: Researchers have proposed a flexible approach to synthesize ultrafast optical transients with arbitrary control over its complete spatiotemporal evolution by leveraging the multifunctional control of light at the nanoscale. This method supports an ultrawide bandwidth with high spectral and spatial resolution, enabling the synthesis of complex states of structured space-time wave packets.
Article
Physics, Multidisciplinary
Markus Hiekkamaki, Robert Fickler
Summary: Two-photon interference in multiple transverse-spatial modes along a single beam-path was studied, with observations of coalescence and anticoalescence in different spatial-mode multiports. This operation within spatial modes along a single beam path eliminates the need for interferometric stability and presents new pathways for implementing complex quantum information tasks using linear optical networks.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Applied
Si-Qi Li, Chao-Hai Du, Feng-Yuan Han, Yi-Dong Wang, Zi-Chao Gao, Yun-Hua Tan, Pu-Kun Liu
Summary: This paper introduces the concept of transverse magnetic (TM) modes of localized spoof surface plasmons (LSSPs) and demonstrates their existence through experiments. Compared to transverse electric (TE) modes, TM modes show higher sensitivity to layer distances and quality factors (Q-factors).
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Peripheral Vascular Disease
Daniel Kretzschmar, Marcus Thieme, Rene Aschenbach, P. Christian Schulze, Sven Moebius-Winkler
Summary: A 45-year-old healthy woman presented with claudication of the right leg. Thrombotic occlusion of a persisting sciatic artery (PSA) was successfully treated using an interventional approach, resulting in a patent vessel and a positive outcome.
INTERNATIONAL JOURNAL OF ANGIOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Safoura Mazrouei, Sebastian Friedrich Petry, Fatemeh Sharifpanah, Shaghayegh Haghjooy Javanmard, Roya Kelishadi, P. Christian Schulze, Marcus Franz, Christian Jung
Summary: The increased expression and activity of arginase-1 in ECs is correlated with the development of obesity-related type 2-DM and vascular disease.
BIOCHIMICA ET BIOPHYSICA ACTA-GENERAL SUBJECTS
(2023)
Article
Optics
Keshaan Singh, Angela Dudley, Andrew Forbes
Summary: Measuring and correcting wavefront aberrations is crucial in various fields, and our approach using a digital micro-mirror device allows for dynamic extraction of wavefronts with high resolution and tuneable sensitivity. We verified its capability by extracting common aberrations, phase screens, and lens phases under static and dynamic conditions. This setup also enables convenient real-time adaptive correction and is versatile, cheap, fast, accurate, broadband, and polarization invariant.
Article
Optics
Bereneice Sephton, Isaac Nape, Chane Moodley, Jason Francis, Andrew Forbes
Summary: Single-pixel quantum ghost imaging exploits non-local photon spatial correlations to image objects using light that has not interacted with them, reducing detection to a single pixel through intelligent spatial scanning with projective masks. Despite facing challenges in extending to complex amplitude objects, we discover that the necessary interference for phase retrieval is naturally embedded in correlation measurements formed from traditional projective masks in bi-photon quantum ghost imaging. With this, we develop a simple method to obtain the complete phase and amplitude information of complex objects and demonstrate unambiguous reconstruction of objects with spatially varying structures and complex amplitudes. This technique could be a significant step towards imaging the phase of light-sensitive structures in biological matter.
Letter
Cardiac & Cardiovascular Systems
P. Christian Schulze, Juergen Bogoviku, Julian Westphal, Pawel Aftanski, Franz Haertel, Sissy Grund, Stephan von Haehling, Ulrike Schumacher, Sven Moebius-Winkler, Martin Busch
Article
Cardiac & Cardiovascular Systems
T. Dung Nguyen, P. Christian Schulze
Summary: Chronic kidney disease is associated with an increased risk of cardiovascular disorders and may cause structural remodeling and impairments in cardiac function. The concept of uremic cardiomyopathy, a specific cardiomyopathic phenotype, has recently been recognized. The metabolism in the myocardium of uremic heart shows overlapping mechanisms with heart failure. Understanding the similarities and differences in cardiac metabolism between heart failure and uremic cardiomyopathy could lead to new targets for research and treatment.
CIRCULATION RESEARCH
(2023)
Editorial Material
Medicine, General & Internal
Robert Roemer, P. Christian Schulze, Oliver Weingaertner
DEUTSCHE MEDIZINISCHE WOCHENSCHRIFT
(2023)
Editorial Material
Cardiac & Cardiovascular Systems
Wilfried Mullens, Paul Christian Schulze, Julian Westphal, Juergen Bogoviku, Johann Bauersachs
EUROPEAN HEART JOURNAL
(2023)
Article
Cardiac & Cardiovascular Systems
Benedikt Schrage, Jonas Sundermeyer, Benedikt Norbert Beer, Letizia Bertoldi, Alexander Bernhardt, Stefan Blankenberg, Jeroen Dauw, Zouhir Dindane, Dennis Eckner, Ingo Eitel, Tobias Graf, Patrick Horn, Paulus Kirchhof, Stefan Kluge, Axel Linke, Ulf Landmesser, Peter Luedike, Enzo Luesebrink, Norman Mangner, Octavian Maniuc, Sven Moebius Winkler, Peter Nordbeck, Martin Orban, Federico Pappalardo, Matthias Pauschinger, Michal Pazdernik, Alastair Proudfoot, Matthew Kelham, Tienush Rassaf, Hermann Reichenspurner, Clemens Scherer, Paul Christian Schulze, Robert H. G. Schwinger, Carsten Skurk, Marek Sramko, Guido Tavazzi, Holger Thiele, Luca Villanova, Nuccia Morici, Antonia Wechsler, Ralf Westenfeld, Ephraim Winzer, Dirk Westermann
Summary: This study aimed to evaluate the use of mechanical circulatory support (MCS) for the treatment of non-ischaemic cardiogenic shock (CS). The results showed that the use of MCS was associated with a lower 30-day mortality rate in patients with non-ischaemic CS. However, MCS treatment was also associated with more complications.
EUROPEAN JOURNAL OF HEART FAILURE
(2023)
Article
Engineering, Electrical & Electronic
Andrew Forbes
Summary: This article reflects on the progress made in both fundamental science and applications in connecting light's orbital angular momentum (OAM) with its spatial structure over the past 30 years. A recent trend has been the direct creation of OAM from lasers, offering potential for tunable, compact, and high-power sources of OAM light. This tutorial-style review provides a summary of the basics of OAM, its creation at the source, significant advancements, the current state-of-the-art, and the remaining challenges.
JOURNAL OF LIGHTWAVE TECHNOLOGY
(2023)
Article
Optics
Keshaan Singh, Isaac Nape, Wagner Tavares Buono, Angela Dudley, Andrew Forbes
Summary: Increasing the information capacity of communication channels is a pressing need to meet growing data demands. Mode division multiplexing (MDM), which uses spatial modes of light as the encoding basis, has potential but is hindered by channel noise. This study overcomes this challenge by exploiting the vectorness of vectorial light as the information carrier, which is completely impervious to channel noise. The results demonstrate near-perfect data fidelity in multi-bit information transfer through atmospheric turbulence, allowing for a state-of-the-art communication channel with 50 vectorial modes and little cross-talk.
LASER & PHOTONICS REVIEWS
(2023)
Article
Optics
Keshaan Singh, Pedro Ornelas, Angela Dudley, Andrew Forbes
Summary: Researchers demonstrate the dynamics of optical skyrmions within a magnetic field by engineering them using superpositions of Bessel-Gaussian beams. The skyrmionic form changes during propagation, exhibiting controllable periodic precession. Through a full Stokes analysis of the optical field, the local precession manifests as global beating between different skyrmion types while maintaining the invariance of the Skyrme number. Numerical simulation shows the potential for extending this approach to create time varying magnetic fields, providing a powerful analogue to solid state systems.
Review
Biology
Christina Schenkl, Estelle Heyne, Torsten Doenst, Paul Christian Schulze, Tien Dung Nguyen
Summary: Despite advances in treating cardiac disorders, heart failure (HF) continues to increase globally and poses a medical and economic burden. HF is characterized by metabolic remodeling in the mitochondria, affecting energy homeostasis, calcium handling, oxidative stress, and inflammation. This study focuses on highlighting mitochondrial metabolic alterations and their impact on the pathophysiology of HF, as well as discussing potential metabolic approaches to improve cardiac function.
Article
Physics, Applied
Cade Peters, Mitchell Cox, Alice Drozdov, Andrew Forbes
Summary: In this study, we investigated the invariance and distortion of vectorial light through atmospheric turbulence. Although the amplitude and polarization structure were severely distorted, the non-separability between these two degrees of freedom remained invariant. This result provides conclusive evidence that invariance and distortion are not mutually exclusive and has implications for classical and quantum communication in free space.
APPLIED PHYSICS LETTERS
(2023)
Article
Optics
Cade Peters, Pedro Ornelas, Isaac Nape, Andrew Forbes
Summary: Nonseparability in classical and quantum states of light can be measured using concurrence and spatially resolved. The study explores local and nonlocal entanglement using vectorial structured light and its quantum analog. This research has significant implications for understanding coherence and polarization in vectorial light and quantum entangled states for imaging.