New Journal of Physics最新文献_第8页

Active gel model for one-dimensional cell migration coupling actin flow and adhesion dynamics 连接肌动蛋白流动和粘附动力学的一维细胞迁移活性凝胶模型

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-24 DOI: 10.1088/1367-2630/ad63c5

Valentin Wössner, Oliver M Drozdowski, Falko Ziebert and Ulrich S Schwarz

引用次数: 0

Applicability of measurement-based quantum computation towards physically-driven variational quantum eigensolver 基于测量的量子计算在物理驱动的变分量子求解器中的适用性

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-24 DOI: 10.1088/1367-2630/ad634a

Zheng Qin, Xiufan Li, Yang Zhou, Shikun Zhang, Rui Li, Chunxiao Du and Zhisong Xiao

{"title":"Applicability of measurement-based quantum computation towards physically-driven variational quantum eigensolver","authors":"Zheng Qin, Xiufan Li, Yang Zhou, Shikun Zhang, Rui Li, Chunxiao Du and Zhisong Xiao","doi":"10.1088/1367-2630/ad634a","DOIUrl":"https://doi.org/10.1088/1367-2630/ad634a","url":null,"abstract":"Variational quantum algorithms are considered one of the most promising methods for obtaining near-term quantum advantages; however, most of these algorithms are only expressed in the conventional quantum circuit scheme. The roadblock to developing quantum algorithms with the measurement-based quantum computation (MBQC) scheme is resource cost. Recently, we discovered that the realization of multi-qubit rotation operations only requires a constant number of single-qubit measurements with the MBQC scheme, providing a potential advantage in terms of resource cost. The structure of the Hamiltonian variational ansatz aligns well with this characteristic. Thus, we propose an efficient measurement-based quantum algorithm for quantum many-body system simulation tasks, called measurement-based Hamiltonian variational ansatz (MBHVA). We then demonstrate its effectiveness, efficiency, and advantages with the two-dimensional Heisenberg model and the Fermi–Hubbard chain. Numerical experiments show that MBHVA can have similar performance as circuit-based ansatz, and is expected to reduce operation counts during execution compared to quantum circuits, bringing the advantage of running time. We conclude that the MBQC scheme is potentially feasible for achieving near-term quantum advantages in the noisy intermediate-scale quantum era, especially in the presence of large multi-qubit rotation operations.","PeriodicalId":19181,"journal":{"name":"New Journal of Physics","volume":"31 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Interconversion between block coherence and multipartite entanglement in many-body systems 多体系统中块相干与多方纠缠之间的相互转换

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-23 DOI: 10.1088/1367-2630/ad602b

Yu-Hui Wang, Li-Hang Ren, Ming-Liang Hu and Yan-Kui Bai

{"title":"Interconversion between block coherence and multipartite entanglement in many-body systems","authors":"Yu-Hui Wang, Li-Hang Ren, Ming-Liang Hu and Yan-Kui Bai","doi":"10.1088/1367-2630/ad602b","DOIUrl":"https://doi.org/10.1088/1367-2630/ad602b","url":null,"abstract":"Coherence is intrinsically related to projective measurement. When the fixed projective measurement involves higher-rank projectors, the coherence resource is referred to as block coherence, which comes from the superposition of orthogonal subspaces. Here, we establish a set of quantitative relations for the interconversion between block coherence and multipartite entanglement under the framework of the block-incoherent operations. It is found that the converted multipartite entanglement is upper bounded by the initial block coherence of single-party system. Moreover, the generated multipartite entanglement can be transferred to its subsystems and restored to block coherence of the initial single-party system by means of local block-incoherent operations and classical communication. In addition, when only the coarse-grained quantum operations are accessible for the ancillary subsystems, we further demonstrate that a lossless resource interconversion is still realizable, and give a concrete example in three four-level systems. Our results provide a versatile approach to utilize different quantum resources in a cyclic fashion.","PeriodicalId":19181,"journal":{"name":"New Journal of Physics","volume":"93 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141770876","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Doppler-enhanced quantum magnetometry with thermal Rydberg atoms 多普勒增强量子磁强计与热雷德堡原子

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-22 DOI: 10.1088/1367-2630/ad6179

Shovan Kanti Barik, Silpa B S, M Venkat Ramana, Shovan Dutta and Sanjukta Roy

引用次数: 0

Quasiparticles-mediated thermal diode effect in Weyl Josephson junctions 韦尔-约瑟夫森结中准粒子介导的热二极管效应

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-22 DOI: 10.1088/1367-2630/ad617a

Pritam Chatterjee and Paramita Dutta

引用次数: 0

Quantum optimization algorithm based on multistep quantum computation 基于多步量子计算的量子优化算法

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-21 DOI: 10.1088/1367-2630/ad60ed

Hefeng Wang and Hua Xiang

{"title":"Quantum optimization algorithm based on multistep quantum computation","authors":"Hefeng Wang and Hua Xiang","doi":"10.1088/1367-2630/ad60ed","DOIUrl":"https://doi.org/10.1088/1367-2630/ad60ed","url":null,"abstract":"We present a quantum algorithm for finding the minimum of a function based on multistep quantum computation, and apply the algorithm for solving optimization problems with continuous variables. We construct the state space of the problem by discretizing the variables of the problem, and divide the state space according to the function values of the vectors of the state space. By comparing the function values of the vectors with a series of threshold values in decreasing order, we construct a sequence of Hamiltonians where the search space of a Hamiltonian is nested in that of the previous one. By applying a multistep quantum computation process for finding the ground state of the last Hamiltonian, the optimal vector of the state space of the problem is located in a small search space and can be determined efficiently. One of the most difficult problems in optimization algorithms is that a trial vector is trapped in a deep local minimum while the global minimum is missed, this problem can be alleviated in our algorithm and the run time is proportional to the number of the steps of the algorithm, provided that the reduction rate of the search spaces is polynomial large. We discuss the implementation of the algorithm and test the algorithm for some test functions.","PeriodicalId":19181,"journal":{"name":"New Journal of Physics","volume":"61 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739808","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Atomic and electronic structures of Ni64Zr36 metallic glass under high pressure 高压下 Ni64Zr36 金属玻璃的原子和电子结构

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-21 DOI: 10.1088/1367-2630/ad602c

Zuzanna Kostera, Jerzy Antonowicz and Przemysław Dzięgielewski

{"title":"Atomic and electronic structures of Ni64Zr36 metallic glass under high pressure","authors":"Zuzanna Kostera, Jerzy Antonowicz and Przemysław Dzięgielewski","doi":"10.1088/1367-2630/ad602c","DOIUrl":"https://doi.org/10.1088/1367-2630/ad602c","url":null,"abstract":"Amorphous metallic alloys, also known as metallic glasses (MGs), are materials with unique physical properties resulting from their disordered yet densely packed atomic structure. The packing density of MGs can be further enhanced by external pressure, forcing the decrease of interatomic distances and modifying both the atomic and electronic structure of an alloy. This work reports on classical molecular dynamics (MD) and density functional theory (DFT) studies of Ni64Zr36 MG in a hydrostatic pressure range of 0–120 GPa. The MD simulations revealed that compression leads to enhanced short-range ordering by increasing the contribution of efficiently packed icosahedral-like clusters. According to the DFT calculations, for pressure above 50 GPa, Zr atoms show a significant change in electronic configuration, with a dominant charge transfer from their s and p to d-states and charge redistribution between Ni and Zr atoms. This variation is correlated with the appearance of pairs with significantly shortened interatomic distances, as detected by the MD. We conclude that the enhanced icosahedral ordering in Ni64Zr36 MG is induced not only by the pressure-driven densification of an alloy but also by a variation of its electronic structure.","PeriodicalId":19181,"journal":{"name":"New Journal of Physics","volume":"663 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An efficient quantum algorithm for independent component analysis 独立成分分析的高效量子算法

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-18 DOI: 10.1088/1367-2630/ad5e16

Xiao-Fan Xu, Xi-Ning Zhuang, Cheng Xue, Zhao-Yun Chen, Yu-Chun Wu and Guo-Ping Guo

引用次数: 0

Optimal multiple-phase estimation with multi-mode NOON states against photon loss 针对光子损耗的多模式 NOON 状态优化多相估计

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-17 DOI: 10.1088/1367-2630/ad5eaf

Min Namkung, Dong-Hyun Kim, Seongjin Hong, Yong-Su Kim, Changhyoup Lee and Hyang-Tag Lim

引用次数: 0

Longitudinal-twist wave converter based on chiral metamaterials 基于手性超材料的纵扭波转换器

IF 3.3 2区物理与天体物理

New Journal of Physics Pub Date : 2024-07-17 DOI: 10.1088/1367-2630/ad617b

Brahim Lemkalli, Muamer Kadic, Youssef El Badri, Sébastien Guenneau, Abdellah Mir and Younes Achaoui

{"title":"Longitudinal-twist wave converter based on chiral metamaterials","authors":"Brahim Lemkalli, Muamer Kadic, Youssef El Badri, Sébastien Guenneau, Abdellah Mir and Younes Achaoui","doi":"10.1088/1367-2630/ad617b","DOIUrl":"https://doi.org/10.1088/1367-2630/ad617b","url":null,"abstract":"Advances in material architectures have enabled endowing materials with exotic attributes not commonly available in the conventional realm of mechanical engineering. Twisting, a mechanism whereby metamaterials are used to transform static axial load into twist motion, is of particular interest to this study. Herein, computations based on the finite element method, corroborated by a theoretical approach derived from applying Lagrange’s equations to a monoatomic spring-mass system, are employed to explore the longitudinal-twist (L-T) conversion exhibited by a chiral tetragonal-beam metamaterial. Firstly, we perform an eigenvalue analysis taking into account the polarization states to highlight the contribution of the longitudinal mode in the L-T conversion. We contrast the twisting behavior of the chiral cell with that of other homogeneous medium, octagonal-tube, and non-chiral cells. Moreover, we demonstrate the influence of the cell’s chirality on the L-T conversion using both time-domain and frequency-domain studies. The findings indicate that at least a portion of the longitudinally propagating wave is transformed into twist throughout a broad frequency range and even quasi-totally converted at distinct frequencies.","PeriodicalId":19181,"journal":{"name":"New Journal of Physics","volume":"14 1","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0