Article
Physics, Multidisciplinary
Xiao-Ming Lu, Xiaoguang Wang
Summary: Quantum multiparameter estimation differs significantly from classical multiparameter estimation due to Heisenberg's uncertainty principle. By finding a correspondence between the inaccuracy of a measurement for estimating unknown parameters and measurement errors, the quantum limits on individual estimation errors can be revealed. This approach allows for deriving trade-offs between attainable errors of estimating different parameters without explicitly parametrizing quantum measurements.
PHYSICAL REVIEW LETTERS
(2021)
Article
Physics, Multidisciplinary
Yuki Inoue, Masanao Ozawa
Summary: Heisenberg's error-disturbance relation (EDR), believed to be another aspect of the uncertainty principle, has been found to be violated in Stern-Gerlach measurements, suggesting a more widespread violation of the EDR than previously thought.
Article
Physics, Multidisciplinary
Ya-Li Mao, Hu Chen, Chang Niu, Zheng-Da Li, Sixia Yu, Jingyun Fan
Summary: This paper reports the first experimental study of MURs of three quantum observables and proposes a novel implementation method. The exact value of the incompatibility measure and the optimal measurements are determined using a numerical method, and several experimental demonstrations are conducted using a single-photon qubit. Besides, it is theoretically shown that MURs for joint measurement can be attained by sequential measurements in certain cases.
PHYSICAL REVIEW LETTERS
(2023)
Article
Automation & Control Systems
Zewen Wang, Jinhua She, Feng Wang, Juan Zhao, Daiki Sato
Summary: This article presents an inside observation of a disturbance-compensation error in the equivalent-input-disturbance (EID) approach and identifies two types of causes: disturbance- and state-estimation errors. A modified EID (MEID) approach is introduced to address each type separately. High-gain observer is utilized to ensure rapid convergence of the disturbance-estimation error, considering its unmeasurable nature. The MEID approach incorporates a weighted output-estimation error, generated by a state observer, to compensate for the state-estimation error within a specified frequency range. A stability condition is established for an MEID-based control system. Parameters of a filter and an observer are jointly optimized based on a time-domain performance index with a frequency domain constraint. Experimental comparison with alternative EID approaches highlights the superiority of the MEID approach.
IEEE-ASME TRANSACTIONS ON MECHATRONICS
(2023)
Article
Physics, Multidisciplinary
Huixia Gao, Lei Xiao, Kunkun Wang, Dengke Qu, Quan Lin, Peng Xue
Summary: When a quantum system is sent through a noisy channel, it is disturbed and undergoes decoherence, losing some quantum features. The relation between disturbance and decoherence is explored in this paper, and a trade-off relation for coherence and disturbance is presented. Experimental results with a single-qubit system verify this relation and provide a quantitative understanding of the relationship between quantum channels and resources.
NEW JOURNAL OF PHYSICS
(2022)
Article
Optics
Yuan Sun, Nan Li, Shunlong Luo
Summary: This study explores the tradeoff relations between state disturbance and information gain in quantum channels from the perspective of information conservation. By dividing information into three categories and establishing a triality relation between them, insights into Mach-Zehnder interferometry and several prototypical channels are provided.
Article
Computer Science, Artificial Intelligence
Xiaobo Hu, Jianbo Su, Jun Zhang
Summary: This paper reviews the latest technologies in pattern recognition, highlighting their instabilities and failures in practical applications. From a control perspective, the significance of disturbance rejection in pattern recognition is discussed, and the existing problems are summarized. Finally, potential solutions related to the application of compensation on features are discussed to emphasize future research directions.
PATTERN RECOGNITION
(2024)
Article
Engineering, Electrical & Electronic
Zhengguo Huang, Mou Chen, Peng Shi
Summary: This paper investigates the disturbance utilization-based attitude control for fixed-wing unmanned aerial vehicles (UAVs). The method utilizes disturbance estimation error analysis auxiliary system and disturbance observer to ensure bounded attitude tracking errors. The proposed control method improves the robustness of the system.
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS
(2023)
Article
Astronomy & Astrophysics
A. Apponi, M. G. Betti, M. Borghesi, A. Boyarsky, N. Canci, G. Cavoto, C. Chang, V Cheianov, Y. Cheipesh, W. Chung, A. G. Cocco, A. P. Colijn, N. D'Ambrosio, N. de Groot, A. Esposito, M. Faverzani, A. Ferella, E. Ferri, L. Ficcadenti, T. Frederico, S. Gariazzo, F. Gatti, C. Gentile, A. Giachero, Y. Hochberg, Y. Kahn, M. Lisanti, G. Mangano, L. E. Marcucci, C. Mariani, M. Marques, G. Menichetti, M. Messina, O. Mikulenko, E. Monticone, A. Nucciotti, D. Orlandi, F. Pandolfi, S. Parlati, C. Pepe, C. Perez de los Heros, O. Pisanti, M. Polini, A. D. Polosa, A. Puiu, I Rago, Y. Raitses, M. Rajteri, N. Rossi, K. Rozwadowska, I Rucandio, A. Ruocco, C. F. Strid, A. Tan, L. K. Teles, V Tozzini, C. G. Tully, M. Viviani, U. Zeitler, F. Zhao
Summary: We discuss the consequences of quantum uncertainty on the spectrum of electrons emitted by the beta-processes of a tritium atom bound to a graphene sheet. We propose possible avenues to mitigate the effect of quantum uncertainty.
Article
Mathematical & Computational Biology
Mushan Li, Yanyuan Ma
Summary: Accurate assessment of the mean-variance relation is crucial in biomedical research. To address the unavailability of true mean and true variance in most biomedical data, we propose a semiparametric estimator that accounts for measurement error and model error, and uses a mixture model to handle different mean-variance relations. Simulation studies and data application demonstrate the effectiveness of the proposed method.
STATISTICS IN MEDICINE
(2023)
Article
Multidisciplinary Sciences
Benjamin D. Strycker
Summary: Despite years of research on Raman phenomena, the issue of unifying spontaneous and stimulated Raman scattering into a set of partial differential equations persists. This problem is solved by formulating quantum dynamics in the Heisenberg picture, with a focus on time and normal-ordering of operators. The technique is demonstrated through application to various systems, with validation through analytical and numerical comparison.
SCIENTIFIC REPORTS
(2021)
Article
Quantum Science & Technology
Xiaobo Hu, Jianbo Su, Jun Zhang
Summary: Pattern recognition is widely used in artificial intelligence, but its interpretability is still understudied. This research improves the performance of pattern recognition through error compensation under a quantum computation framework, resulting in a more robust recognition system.
QUANTUM INFORMATION PROCESSING
(2023)
Article
Computer Science, Information Systems
Hyoungsung Kim, Jehyuk Jang, Sangjun Park, Heung-No Lee
Summary: The ECCPoW algorithm, based on LDPC code, can impede ASICs in mining. Researchers have designed ECCPoW for both Bitcoin and Ethereum, validating its performance and stability through experimentation. Simulation tests were conducted to ensure the ETH-ECC algorithm has a finite mean and stable transaction confirmation.
Article
Multidisciplinary Sciences
Milica Andelic, Carlos M. da Fonseca
Summary: In this note, a brief proof is provided for the explicit formulas of coefficients of a specific 3-term recurrence relation derived from k-periodic recurrence. Any recurrence can be interpreted naturally in terms of determinants of Hessenberg matrices families.
Article
Environmental Sciences
Michael Doering, Remo Freimann, Nadine Antenen, Alexia Roschi, Christopher T. Robinson, Fabio Rezzonico, Theo H. M. Smits, Diego Tonolla
Summary: The study investigated the seasonal and spatial dynamics of microbial communities in floodplain systems, revealing that microbial communities differed more among floodplain habitats than between riverine floodplains. An experimental flood caused a temporary shift in microbial communities, but pelagic bacteria did not persist within floodplain habitats over time after the flood.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Mathematics, Applied
C. Cedzich, F. A. Gruenbaum, L. Velazquez, A. H. Werner, R. F. Werner
COMMUNICATIONS ON PURE AND APPLIED MATHEMATICS
(2016)
Article
Optics
Adrian Auer, Rene Schwonnek, Christian Schoder, Lars Dammeier, Reinhard F. Werner, Guido Burkard
APPLIED PHYSICS B-LASERS AND OPTICS
(2016)
Article
Physics, Multidisciplinary
C. Cedzich, F. A. Grunbaum, C. Stahl, L. Velazquez, A. H. Werner, F. Werner
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2016)
Article
Physics, Multidisciplinary
F. Trimborn, R. F. Werner, D. Witthaut
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2016)
Review
Physics, Mathematical
M. Keyl, J. Kiukas, R. F. Werner
REVIEWS IN MATHEMATICAL PHYSICS
(2016)
Article
Physics, Multidisciplinary
Reinhard F. Werner
FRONTIERS OF PHYSICS
(2016)
Article
Mathematics, Applied
I. Siemon, A. S. Holevo, R. F. Werner
OPEN SYSTEMS & INFORMATION DYNAMICS
(2017)
Article
Physics, Multidisciplinary
Rene Schwonnek, Lars Dammeier, Reinhard F. Werner
PHYSICAL REVIEW LETTERS
(2017)
Article
Physics, Mathematical
Paul Busch, Jukka Kiukas, R. F. Werner
JOURNAL OF MATHEMATICAL PHYSICS
(2018)
Article
Physics, Mathematical
C. Cedzich, T. Geib, A. H. Werner, R. F. Werner
JOURNAL OF MATHEMATICAL PHYSICS
(2019)
Article
Physics, Multidisciplinary
Reinhard F. Werner, Terry Farrelly
FOUNDATIONS OF PHYSICS
(2019)
Article
Physics, Mathematical
Rene Schwonnek, Reinhard F. Werner
JOURNAL OF MATHEMATICAL PHYSICS
(2020)
Article
Optics
Pablo Arrighi, Vincent Nesme, Reinhard F. Werner
Article
Mathematics
Rene Schwonnek, David Reeb, Reinhard F. Werner
Article
Optics
C. Cedzich, R. F. Werner