Article
Chemistry, Multidisciplinary
Zheng Hu, Qianhao Zhao, Hui Ma
Summary: This study investigates how to configure measurement systems to achieve optimal instrument matrices by combining geometric optimization on the Poincare sphere, and proposes a series of measurement configurations for different applications.
APPLIED SCIENCES-BASEL
(2022)
Article
Physics, Multidisciplinary
Wei Guo, Jiawei Song, Nan Zeng, Hui Ma
Summary: In this study, a flat-field Mueller matrix imaging system is proposed to reduce reconstruction errors caused by critical illumination. By adding a beam shaping module to a traditional Mueller system, the signal-to-noise ratio of the reconstructed images is improved significantly. Experimental results demonstrate the effectiveness of the system in minimizing reconstruction errors and highlight the potential of flat-field polarization imaging in pathological diagnosis and tissue characteristic extraction.
FRONTIERS IN PHYSICS
(2022)
Article
Multidisciplinary Sciences
Christian D. Marciniak, Thomas Feldker, Ivan Pogorelov, Raphael Kaubruegger, Denis V. Vasilyev, Rick van Bijnen, Philipp Schindler, Peter Zoller, Rainer Blatt, Thomas Monz
Summary: This article demonstrates a programmable quantum sensor that utilizes quantum entanglement to achieve sensing close to the fundamental limits of quantum mechanics. By optimizing input states and measurement operators, the researchers improved the sensing performance while reducing the number of averages required. This study provides new insights for the development of quantum sensors.
Article
Automation & Control Systems
Lixun Huang, Lijun Sun, Tao Wang, Qiuwen Zhang, Weihua Liu, Zhe Zhang
Summary: This paper proposes a method to improve the convergence performance of wireless networked iterative learning control systems by designing an input filter at the actuator side to handle multiplicative and additive noises. By considering a P-type learning controller, developing mathematical models, and designing an optimal input filter based on orthogonality projection theory, the proposed method is theoretically analyzed and numerically validated.
INTERNATIONAL JOURNAL OF SYSTEMS SCIENCE
(2022)
Article
Quantum Science & Technology
Nicholas Bornman, Wagner Tavares Buono, Michael Lovemore, Andrew Forbes
Summary: This paper presents a basis-independent approach to solve the pump shaping problem, allowing for the determination of the required pump profile for any desired downconversion joint probability spectrum, often analytically. It can reproduce prior results exactly and achieve new results, such as shaping quantum states in new bases and controlling the signal-to-noise ratio. The approach is believed to be optimal for quantum state engineering by focusing on any desired state (sub)space and can be optimized with respect to a chosen norm.
ADVANCED QUANTUM TECHNOLOGIES
(2021)
Article
Optics
Qing-Shou Tan, Mao Zhang, Yu Chen, Jie-Qiao Liao, Jing Liu
Summary: By introducing combined controls performed at different time intervals in a collective spin system, the generation and storage performance of spin squeezing can be improved. This approach provides not only a comparable minimum value of the squeezing parameter over time compared to full-time varying controls, but also offers better lifetime and larger amount of squeezing.
Article
Optics
Changsuk Noh, Changhyoup Lee, Su-Yong Lee
Summary: This passage introduces the principles of quantum illumination and the method for evaluating its performance. It compares the performance of coherent states and entangled states in detecting weak signals.
JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS
(2022)
Article
Optics
Jiawei Li, Jianhua Zeng, Feng Li, Yanpeng Zhang, Yin Cai
Summary: In this paper, an all-optically controlled scheme for generating three-mode bright quantum correlated beams is proposed using energy-level cascaded four-wave mixing. Various permutations of two- and three-mode quadrature squeezing can be generated and optimized by modulating the ratio of the multiple seeds, providing a reconfigurable and integrated strategy for complex quantum information processing and quantum metrology.
Article
Optics
Karunesh K. Mishra, Stefan Ataman
Summary: This paper addresses the problem of optimizing an unbalanced Mach-Zehnder interferometer for a given pure input state and specific detection scheme. The optimum transmission coefficient of the first beam splitter can be uniquely determined using the quantum Fisher information, while the second beam splitter's transmission coefficient is also dependent on the detection scheme. The paper systematically provides analytic solutions for the optimum transmission coefficient of the second beam splitter for three widely used detection schemes. Detailed examples are provided, including both Gaussian and non-Gaussian input states, to demonstrate the advantage of an unbalanced Mach-Zehnder interferometer over its balanced counterpart in terms of phase sensitivity.
Article
Computer Science, Information Systems
Moritz Wiese, Wafa Labidi, Christian Deppe, Holger Boche
Summary: This article analyzes the deterministic message identification in channels with non-discrete additive white noise and with a noiseless feedback link. The research proposes a coding scheme that utilizes infinite common randomness and feedback to construct arbitrarily large deterministic identification codes.
IEEE TRANSACTIONS ON INFORMATION THEORY
(2023)
Article
Materials Science, Multidisciplinary
Baba Seidu, Eric N. Wiah, Joshua Kiddy K. Asamoah
Summary: This study presents a nonlinear deterministic model to investigate the dynamics of cholera in different populations based on their personal hygiene levels. The model identifies two stable points, representing cholera-free and cholera-persistent states, indicating the presence of forward bifurcation. The study also reveals that parameters such as the immigration rate, rate of disinfection, bacteria ingestion rate, and bacterial shedding rate have a significant impact on cholera spread. Optimal control analysis is used to determine the most cost-effective combination of infection control measures for controlling the spread of cholera.
RESULTS IN PHYSICS
(2023)
Article
Physics, Condensed Matter
Rakesh Kumar Malakar, Asim Kumar Ghosh
Summary: A simple route to engineer topological phases with any desired winding and Chern numbers is achieved by adding a further neighbor hopping term in the Su-Schrieffer-Heeger (SSH) model. It is shown that topological phases with various winding numbers can be generated by introducing a single further neighbor term that maintains inversion, particle-hole, and chiral symmetries. The modulation of nearest neighbor and next-nearest-neighbor hopping parameters in another version of the SSH model also leads to multiple crossings within the edge states energy lines in both trivial and topological phases. Topological phase diagrams are plotted for different parametrizations.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2023)
Article
Automation & Control Systems
Xiaowei Jiang, Jianhao Li, Bo Li, Xiangyong Chen, Huaicheng Yan
Summary: This study focuses on the optimal tracking performance (OTP) of networked control systems (NCSs) considering packet dropouts and noise constraints in communication networks, and provides explicit expressions for the OTP limitation under these constraints. The results indicate that the intrinsic features of the plant and the communication parameters of the network channel will affect the OTP of the NCSs.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Telecommunications
Lina Mohjazi, Lina Bariah, Sami Muhaidat, Muhammad Ali Imran
Summary: This letter investigates the performance of reconfigurable intelligent surface (RIS)-assisted communications under generalized Gaussian noise (GGN) assumption over Rayleigh fading channels. The authors derive a novel closed-form expression for the symbol error rate (SER) of arbitrary modulation schemes, and study the SER performance and achievable diversity order under special additive noise distributions.
IEEE COMMUNICATIONS LETTERS
(2022)
Article
Mathematics
Felipe A. Ramirez
Summary: The note presents a construction of sequences that do not have metric Poissonian pair correlations (MPPC) and have additive energies that grow close to a threshold; similar result appears in the work of Lachmann and Technau but is proved using a different strategy. The main novelty lies in the simplicity of the proof, achieved by modifying a construction of Bourgain.
ARCHIV DER MATHEMATIK
(2021)
