Article
Multidisciplinary Sciences
Qinghua Guo, Tianshu Jiang, Ruo-Yang Zhang, Lei Zhang, Zhao-Qing Zhang, Biao Yang, Shuang Zhang, C. T. Chan
Summary: Experimental observation of non-Abelian topological charges and edge states in a PT-symmetric transmission line network, along with the discovery of a non-Abelian quotient relation for the bulk-edge correspondence. This new topological property opens up possibilities for intriguing observable phenomena in the field of material science.
Article
Physics, Multidisciplinary
Lara Braverman, Colin Scheibner, Bryan VanSaders, Vincenzo Vitelli
Summary: Research shows that odd elastic moduli can modify the strain induced by topological defects and potentially reverse the stability of bound dislocation pairs. Moreover, isolated dislocations are found to self propel through microscopic work cycles, competing with conventional Peach-Koehler forces.
PHYSICAL REVIEW LETTERS
(2021)
Article
Multidisciplinary Sciences
G. Semeghini, H. Levine, A. Keesling, S. Ebadi, T. T. Wang, D. Bluvstein, R. Verresen, H. Pichler, M. Kalinowski, R. Samajdar, A. Omran, S. Sachdev, A. Vishwanath, M. Greiner, V. Vuletic, M. D. Lukin
Summary: Researchers utilized a programmable quantum simulator made up of 219 atoms to investigate quantum spin liquid states, creating frustrated quantum states without local order through array placement and evolution, and detecting the onset of a quantum spin liquid phase using topological string operators.
Article
Materials Science, Multidisciplinary
Yusuke Masaki, Takeshi Mizushima, Muneto Nitta
Summary: In this paper, the researchers demonstrate the existence and stability of non-Abelian half-quantum vortices (HQVs) in P-3(2) superfluids. They find that a singly quantized vortex is destabilized into a pair of two non-Abelian HQVs and each HQV carries a topologically protected Majorana fermion, characterizing twofold non-Abelian anyons.
Article
Physics, Multidisciplinary
Daniel Leykam, Daria A. Smirnova
Summary: Topological invariants characterizing filled bands in electronic materials cannot be directly applied to bosonic systems. Instead, the topological invariants in bosonic systems can be determined by transitions from bound to leaky modes in photonic lattices.
Article
Materials Science, Multidisciplinary
P. P. Abrantes, Tarik P. Cysne, D. Szilard, F. S. S. Rosa, F. A. Pinheiro, C. Farina
Summary: In this study, quantum reflection of different atoms by graphene family materials under external electric field and light was theoretically investigated. The results showed distinctive signatures of topological phase transitions in quantum reflection probability, which can be highly tunable by external agents, providing a new method for probing the topological phase transitions of graphene family materials.
Article
Physics, Multidisciplinary
Sungjong No, Seungsang Oh, Hyungkee Yoo
Summary: This paper explores the application of knots and embedded graphs in simulating polymer chains, focusing on the theta curve motif in a circular protein with internal bridges. Qualitative results of nontrivial theta-curves and Brunnian theta-curves are obtained using the lattice stick number, with lower bounds presented for both types of curves.
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL
(2021)
Article
Optics
Junhua Dong, Bingsuo Zou, Yongyou Zhang
Summary: This article proposes a reconfigurable valley topological quantum electrodynamics (QED) platform scheme based on the honeycomb lattice of Jaynes-Cummings emitters, which can be implemented by cavity-or circuit-QED cells. Based on this reconfigurable platform, a tunable topological quantum router is designed and the theory of achieving topological quantum storage and reading is demonstrated. Both of these signify the remarkable potential of the suggested reconfigurable topological QED platform for qubit operation.
Article
Physics, Multidisciplinary
M. F. Araujo de Resende, J. P. Ibieta Jimenez, J. Lorca Espiro
Summary: Proving the importance of non-Abelian fusion rules in SPT phase transitions.
Article
Computer Science, Theory & Methods
Juan Fernandez-Sanchez, Manuel Ubeda-Flores
Summary: In this paper, it is shown that the set of fuzzy numbers has the same cardinality as the set of real numbers. Additionally, the set of triangular fuzzy numbers is proved to be nowhere dense within the set of fuzzy numbers (using a suitable distance), and the set of real numbers is also nowhere dense within the set of triangular fuzzy numbers. Moreover, the concept of quasilineability is introduced, and the sets of bounded fuzzy number sequences without a lower limit and bounded, monotonic decreasing with respect to a partial ordering, and not convergent are studied.
FUZZY SETS AND SYSTEMS
(2023)
Article
Quantum Science & Technology
Jad C. Halimeh, Ian P. McCulloch, Bing Yang, Philipp Hauke
Summary: The study of the topological 0-angle in gauge theories is of great significance for understanding phenomena such as violations of charge-parity symmetry, topological transitions, and confinement-deconfinement transitions. This research demonstrates the feasibility of adding a tunable topological 0-term to a theory with U(1) gauge symmetry and shows the observed effects of this term. The work opens up new possibilities for studying topological gauge-theory terms in large-scale cold-atom quantum simulators.
Article
Materials Science, Multidisciplinary
Bartholomew Andrews, Madhav Mohan, Titus Neupert
Summary: Determining the statistics of elementary excitations supported by fractional quantum Hall states is crucial for understanding their properties and potential applications. The use of topological entanglement entropy to investigate single-component nu = 2/5 and 3/7 states in the Hofstadter model reveals Abelian topological order. Many-body simulations using the infinite cylinder density matrix renormalization group were conducted, presenting an efficient algorithm to construct the area law of entanglement.
Article
Quantum Science & Technology
Chuan-Hsun Li, Yangqian Yan, Shih-Wen Feng, Sayan Choudhury, David B. Blasing, Qi Zhou, Yong P. Chen
Summary: The researchers observe a symmetry-protected topological band structure on a synthetic cylindrical surface where a Bose-Einstein condensate is present, and they find that breaking the symmetry induces a topological transition. The band structure and transport behavior can be controlled by manipulating the synthetic magnetic flux.
Article
Quantum Science & Technology
Lorenzo Cardarelli, Sergi Julia-Farre, Maciej Lewenstein, Alexandre Dauphin, Markus Mueller
Summary: This work investigates a realistic scenario for the quantum simulation of interaction-induced topological phases using cold Rydberg-dressed atoms in optical lattices. The phase diagram of spinless fermions on a checkerboard lattice is analyzed in the mean-field approximation, and the stability of the phases with respect to temperature and quantum fluctuations is studied. An implementation protocol is proposed to access the topological properties of the model in state-of-the-art cold atom quantum simulators.
QUANTUM SCIENCE AND TECHNOLOGY
(2023)
Article
Physics, Multidisciplinary
Yuan Tao, Dai Han-Ning, Chen Yu-Ao
Summary: Topological pumping enables the quantized transport of matter waves through an adiabatic evolution of the system. This paper proposes an experimental scheme for realizing nonlinear topological pumping in ultracold atom systems and presents numerical calculations to determine the quantized transport characteristics of solitons in the system.
ACTA PHYSICA SINICA
(2023)
Article
Education & Educational Research
Yan Ruan, Junlei Zhang, Qiyan Cai, Jiali Wang, Gaoke Liu, Yunlai Liu, Feng Mei, Jianqin Niu, Lan Xiao, Yanping Tian, Hongli Li
Summary: Due to insufficient basic medical knowledge and inappropriate learning strategies, students of an 8-year medical programme encountered obstacles in basic medicine learning. This study introduced a prerequisite course and found that it improved learning performance and adjusted learning strategies.
BMC MEDICAL EDUCATION
(2022)
Article
Optics
Weiming Li, Feng Mei, Zeng Hu, Xingyu Gao, Haoyong Yu, Alaa Aldeen Housein, Chuannen Wei
Summary: Robotic welding is a critical technology in manufacturing, and vision sensor plays a crucial role in increasing the flexibility and adaptability of robot welding. This research presents a fast, accurate, and robust multiple-type weld seam recognition algorithm for robot welding, which overcomes the challenges of heavy arc and spatter noise and recognizes various types of weld seams.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Physics, Applied
Xiao-Hong Liu, Kai-Yu Liao, Zuan-Xian Zhang, Hai-Tao Tu, Wu Bian, Zhong-Qi Li, Shun-Yuan Zheng, He-He Li, Wei Huang, Hui Yan, Shi-Liang Zhu
Summary: Atomic heterodyne dressed by a local oscillator resonant with Rydberg transitions allows high sensitivity and robust phase measurement of a microwave electric field, with a wide frequency range and dynamic range, and reliable reception of phase-modulated carriers in digital communication.
PHYSICAL REVIEW APPLIED
(2022)
Article
Physics, Multidisciplinary
Jia-Zhen Li, Cong-Jun Zou, Yan-Xiong Du, Qing-Xian Lv, Wei Huang, Zhen-Tao Liang, Dan-Wei Zhang, Hui Yan, Shanchao Zhang, Shi-Liang Zhu
Summary: This study presents the first theoretical proposal and experimental realization of synthetic topological vacua using atomic Bose-Einstein condensates. The research provides a promising platform to demonstrate that vacuum has rich spatial structures and explores topological vacua and related instantons.
PHYSICAL REVIEW LETTERS
(2022)
Article
Environmental Sciences
Feng Mei, Chaoshuo Zhang, Bin Luo, Dongxu Zhang, Shaoqiu Hu, Jianghui Bao, Yuxi Lian, Daxian Zhao, Ming Duan
Summary: Hydroacoustics is a non-invasive fish stock assessment technique that plays a crucial role in fishery science and management. This study investigated the diel and seasonal differences in fish density, Target Strength (TS), and vertical distribution using hydroacoustic surveys. The results showed higher fish density at nighttime compared to daytime in both summer and winter, significant differences in TS between day and night in summer, and significant seasonal correlations in fish vertical distribution, indicating the importance of conducting hydroacoustic surveys at nighttime for accurate assessments.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Optics
Yong-Li Wen, Yunfei Wang, Li-Man Tian, Shanchao Zhang, Jianfeng Li, Jing-Song Du, Hui Yan, Shi-Liang Zhu
Summary: Experimental observation of single photon propagators based on direct measurement of quantum wave functions. Classical trajectories satisfying the principle of least action are successfully extracted in free space and harmonic potential cases. The principle of least action is considered the most fundamental in physics and can be used to derive equations of motion in different branches of physics. However, its experimental demonstration at the quantum level has been lacking due to the unobserved propagators of Feynman's path integrals.
Article
Environmental Sciences
Bin Luo, Xianjun Zhou, Chaoshuo Zhang, Jianghui Bao, Feng Mei, Yuxi Lian, Dongxu Zhang, Shaoqiu Hu, Longgen Guo, Ming Duan
Summary: Understanding the fish community structure and spatial distribution characteristics is crucial for effective reservoir fishery management. This study investigated the fish community and distribution at a newly constructed reservoir in southwest China using hydroacoustic survey and fish sampling. The results showed a single fish community structure with Pseudorasbora parva as the dominant species. Fish density varied in different areas of the reservoir, with higher densities in the middle and tail areas. The main factors affecting fish distribution were water depth, temperature, dissolved oxygen, total nitrogen, and plankton density. Adjustments to the fish community structure, such as releasing native carnivorous fish and filter-feeding fish, were suggested for maintaining ecosystem health and increasing economic benefits.
FRONTIERS IN MARINE SCIENCE
(2023)
Article
Physics, Multidisciplinary
Tianyin Li, Xingyu Guo, Wai Kin Lai, Xiaohui Liu, Enke Wang, Hongxi Xing, Dan-Bo Zhang, Shi-Liang Zhu, QuNu Collaboration
Summary: Light-cone distribution amplitudes (LCDAs) are crucial for predicting exclusive high-energy processes in quantum chromodynamics (QCD). We demonstrate the potential of calculating LCDAs on a quantum computer using a recently proposed quantum algorithm and simulating it on classical hardware with staggered fermions in the (1+1)-dimensional Nambu-Jona-Lasinio (NJL) model. The agreement between the classical simulation and exact diagonalization validates the proposed quantum algorithm. The resulting LCDAs in the NJL model exhibit similar features to those obtained from QCD.
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
(2023)
Article
Physics, Applied
Jian-Feng Li, Yun-Fei Wang, Pei-Sheng Huang, Ke-Yu Su, Yu-Qing Peng, Shanchao Zhang, Hui Yan, Shi-Liang Zhu
Summary: We report an experiment demonstrating the realization of a low-loss nonreciprocal phase shift larger than π in a cavity-free and magnetic-free cold atomic ensemble based on electromagnetically induced transparency. Furthermore, a four-port all-optical circulator is demonstrated with an average isolation ratio of 22.25 dB and transmission of 0.94 for each channel. At its optimal working point, the circulator achieves a total isolation ratio of 63.47 dB, transmission of 0.86, and fidelity of about 0.99. Our work can advance further investigation of nonreciprocity with cold atoms in quantum information processing applications.
PHYSICAL REVIEW APPLIED
(2023)
Article
Optics
Ze-Hao Huang, Peng He, Li-Jun Lang, Shi-Liang Zhu
Summary: We propose a general quantum circuit based on the SWAP test for measuring the quantity ⠂*1|A|*2 ⠃ of an arbitrary operator A with respect to two quantum states |*1,2 ⠃. This circuit can efficiently prepare the left and right eigenstates as the input and has been applied to study non-Hermitian physics, demonstrating the validity of the circuit in measuring generalized expectations and capturing distinct topological phase transitions. The circuit provides a different perspective for studying novel properties in non-Hermitian and other physics realized in qubit systems.
Article
Optics
Peng He, Yan-Qing Zhu, Jian-Te Wang, Shi-Liang Zhu
Summary: We uncover the topology of a pseudo-Hermitian Chern insulator by studying quantum quench dynamics. The Bloch Hamiltonian of the insulator is defined using q-deformed Pauli matrices, which are associated with deformed algebras. We demonstrate the bulk-surface duality of the pseudo-Hermitian phases and establish a concrete relation between static band topology and quench dynamics through time-averaged spin textures. Our results are extended to a fully nonequilibrium case governed by a Floquet pseudo-Hermitian Hamiltonian. Additionally, we propose a potential scheme to experimentally realize this challenging model in a bilayer lattice and observe its dynamics using a double-quench protocol.
Article
Optics
Qing-Xian Lv, Hong-Zhi Liu, Yan-Xiong Du, Lin-Qing Chen, Meng Wang, Jia-Hao Liang, Zhao-Xin Fu, Zi-Yuan Chen, Hui Yan, Shi-Liang Zhu
Summary: Non-Abelian gauge field is crucial in understanding geometrical and topological phenomena in physics. In this study, a non-Abelian gauge field is experimentally induced in the degenerate eigensubspace of a double-Lambda four-level atomic system. The non-Abelian nature of the gauge field is detected through measurement of noncommutativity in successive evolution loops. A scheme is proposed and demonstrated to measure the non-Abelian gauge field through multiloop evolution and robust holonomic quantum gates, offering the advantage of amplification in detecting the gauge field. This research paves the way for experimentally feasible high-resolution and high-precision measurements of gauge fields.
Article
Physics, Multidisciplinary
Qing-Xian Lv, Li Sai, Hai-Tao Tu, Kai-Yu Liao, Zhen-Tao Liang, Yan Hui, Shi-Liang Zhu
Summary: This paper comprehensively reviews the recent research advancements in the optical interconnection of two superconducting quantum computers based on the superconductor and cold atoms hybrid quantum system, including coherent coupling, microwave-to-optics conversion, and long-range microwave interconnection. The system provides a physical and technical foundation for optical-fiber interconnection of two superconducting quantum computers and has broad applications in distributed superconducting quantum computation and hybrid quantum networks.
ACTA PHYSICA SINICA
(2023)
Article
Physics, Multidisciplinary
Li-Man Tian, Yong-Li Wen, Yun-Fei Wang, Shan-Chao Zhang, Jian-Feng Li, Jing-Song Du, Hui Yan, Shi-Liang Zhu
Summary: This article reviews the research progress of propagator measurement based on path integral representations and introduces a propagator measurement scheme based on the direct measurement of the wave function. The research results successfully address the technical challenges of path integral experimental studies and experimentally demonstrate the quantum principle of least action.
ACTA PHYSICA SINICA
(2023)
Article
Physics, Multidisciplinary
Yun-Fei Wang, Ying Zhou, Ying Wang, Hui Yan, Shi-Liang Zhu
Summary: This study summarizes the research progress and applications of quantum memory technology, focusing on the development of metrics such as efficiency, lifetime, fidelity, and mode capacity. It introduces the recent typical applications of quantum memory in areas such as quantum entanglement, multi-photon processes, and quantum interference. Finally, it provides a prospect and summary of the future development of quantum storage.
ACTA PHYSICA SINICA
(2023)