Nature Physics最新文献_第3页

Short-range excitonic correlations and enhanced excitonic susceptibility in 1T-TiSe2 1T-TiSe2的短程激子相关和激子敏感性增强

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2026-10-08 DOI: 10.1038/s41567-026-03423-z

Alfred Zong,Sheng-Chih Lin,Shunsuke A. Sato,Emma Berger,Bailey R. Nebgen,Marcus Hui,B. Q. Lv,Yun Cheng,Wei Xia,Yanfeng Guo,Dao Xiang,Michael W. Zuerch

{"title":"Short-range excitonic correlations and enhanced excitonic susceptibility in 1T-TiSe2","authors":"Alfred Zong,Sheng-Chih Lin,Shunsuke A. Sato,Emma Berger,Bailey R. Nebgen,Marcus Hui,B. Q. Lv,Yun Cheng,Wei Xia,Yanfeng Guo,Dao Xiang,Michael W. Zuerch","doi":"10.1038/s41567-026-03423-z","DOIUrl":"https://doi.org/10.1038/s41567-026-03423-z","url":null,"abstract":"Abstract Excitons—bound states of electrons and holes—can spontaneously condense into a quantum coherent ground state. 1 T -TiSe 2 , a layered transition metal dichalcogenide, is a candidate for realizing this phase in a bulk material, but its putative excitonic condensation is accompanied by charge-density-wave formation that obscures signatures of excitonic instability and fluctuations in this structural transition. Here we clarify the mechanism of exciton condensation in quasi-low-dimensional systems by tracking exciton dissociation as a function of photoexcitation fluence and temperature using few-femtosecond broadband extreme-ultraviolet absorption spectroscopy. We find that short-range excitonic fluctuations emerge before long-range-order formation in the ground state. We also observe enhanced excitonic susceptibility, identified by faster exciton dissociation near the phase transition temperature, consistent with excitonic instability in this material. These results provide a framework for understanding other excitonic insulator candidates proposed in quasi-one- or quasi-two-dimensional crystals.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"26 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2026-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149150342","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Clarity on carbon under extreme compression 在极度压缩下碳的清晰度

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2026-10-07 DOI: 10.1038/s41567-026-03460-8

Felipe González-Cataldo

引用次数: 0

Non-reciprocity in quantum technologies 量子技术中的非互易性

IF 18 1区物理与天体物理

Nature Physics Pub Date : 2026-10-07 DOI: 10.1038/s41567-026-03464-4

Shabir Barzanjeh, André Xuereb, Andrea Alù, Sander A. Mann, Nikita Nefedkin, Vittorio Peano, Peter Rabl

{"title":"Non-reciprocity in quantum technologies","authors":"Shabir Barzanjeh, André Xuereb, Andrea Alù, Sander A. Mann, Nikita Nefedkin, Vittorio Peano, Peter Rabl","doi":"10.1038/s41567-026-03464-4","DOIUrl":"10.1038/s41567-026-03464-4","url":null,"abstract":"Non-reciprocity—the ability to transmit signals in one direction while blocking them in the reverse—has become an important resource for quantum technologies, enabling directional amplification, routing of quantum information and topologically protected quantum states. Recent experimental advances have demonstrated non-reciprocal behaviour in low-loss, fully integrated devices operating with weak or no magnetic bias fields. Many of the most mature demonstrations so far have been realized in microwave-frequency and superconducting circuits, but progress continues in parallel in optical and nanophotonic systems. These achievements overcome the limitations of more traditional approaches that use stronger magnetic bias fields. This makes non-reciprocity compatible with superconducting circuits and scalable quantum photonic architectures, as well as an integral part of the next generation of modular quantum computers, distributed quantum networks and precision metrology. Here we highlight the key concepts for engineering non-reciprocity in quantum systems and describe how this functionality can be used for high-fidelity qubit readout, robust quantum state transfer and boosting the sensitivity of quantum sensors. Non-reciprocity in the quantum regime promises unidirectional transport and enhanced sensing, but traditional approaches hinder device integration. This Review highlights magnet-free routes for engineering non-reciprocity in quantum systems.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"22 10","pages":"1545-1556"},"PeriodicalIF":18.0,"publicationDate":"2026-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149090060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Topological transitions in orbital-symmetry-controlled chemical reactions 轨道对称控制化学反应中的拓扑跃迁

IF 18 1区物理与天体物理

Nature Physics Pub Date : 2026-10-06 DOI: 10.1038/s41567-026-03455-5

Ziren Xie, Amir Mirzanejad, Lukas Muechler

{"title":"Topological transitions in orbital-symmetry-controlled chemical reactions","authors":"Ziren Xie, Amir Mirzanejad, Lukas Muechler","doi":"10.1038/s41567-026-03455-5","DOIUrl":"10.1038/s41567-026-03455-5","url":null,"abstract":"Tools that classify energy-level connectivity through topological invariants have become a standard in condensed-matter physics. More recently, the extension of these concepts to molecular systems has attracted substantial interest. Reactions governed by orbital symmetry conservation are ideal model systems to develop this extension, as they classify reaction pathways as symmetry allowed or symmetry forbidden depending on whether molecular-orbital energies cross along the reaction coordinate. However, the presence of strong electronic correlations in these reactions invalidates the framework underlying topological band theory, preventing a straight generalization. Here we introduce a formalism in terms of Green’s functions to classify reactions controlled by orbital symmetry even in the presence of strong electronic correlations. We show that symmetry-forbidden pathways are characterized by crossings of zeros in Green’s function, in contrast to the crossing of poles as predicted by molecular-orbital theory. We introduce symmetry-resolved invariants that provide end-point diagnostics for symmetry-preserving paths and discuss the direct tracking of zeros when the symmetry is weakly broken. The result is a many-body generalization of orbital-crossing selection rules and a bridge to established concepts from topological and strong interaction physics in a molecular setting. The application of ideas from topological band theory to reaction pathways in molecular systems with strong electronic interactions is challenging. Now, a many-body framework based on Green’s functions is introduced to solve this problem.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"22 10","pages":"1579-1586"},"PeriodicalIF":18.0,"publicationDate":"2026-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149087848","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Reactions become topological 反应变得拓扑化

IF 18 1区物理与天体物理

Nature Physics Pub Date : 2026-10-06 DOI: 10.1038/s41567-026-03472-4

Norah M. Hoffmann

引用次数: 0

Fully developed active turbulence defined through a non-equilibrium phase transition 通过非平衡相变定义的充分发展的主动湍流

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2026-09-30 DOI: 10.1038/s41567-026-03408-y

Lasse Bonn, Tianxiang Ma, Olga Bantysh, Wei Feng, Martin Cramer Pedersen, Guangyin Jing, Jordi Ignés-Mullol, Francesc Sagués, Nuno A. M. Araujo, Amin Doostmohammadi

{"title":"Fully developed active turbulence defined through a non-equilibrium phase transition","authors":"Lasse Bonn, Tianxiang Ma, Olga Bantysh, Wei Feng, Martin Cramer Pedersen, Guangyin Jing, Jordi Ignés-Mullol, Francesc Sagués, Nuno A. M. Araujo, Amin Doostmohammadi","doi":"10.1038/s41567-026-03408-y","DOIUrl":"https://doi.org/10.1038/s41567-026-03408-y","url":null,"abstract":"Non-equilibrium systems challenge the standard definitions of phases and phase transitions from equilibrium statistical physics. For example, in active fluids, continuous energy injection at the microscale drives the system intrinsically out of equilibrium. This process gives rise to collective turbulent-like flows whose onset remains poorly defined. Here we show that the onset corresponds to an activity-driven phase transition, marked by the emergence of a system-spanning critical backbone of vorticity nodal lines. Combining two independent experiments, namely, microtubule–kinesin active nematics and dense suspensions of swimming bacteria, with large-scale simulations of active nematics and fluctuating nematohydrodynamics, we show that this transition occurs at a critical activity threshold. Below this threshold, vorticity structures are fragmented and vortex centres form only finite, mechanically floppy networks. Above this threshold, the nodal lines of the vorticity field percolate and the vortex centres form a rigid, system-spanning cluster. The geometric transition is characterized by the emergence of critical percolation statistics for the vorticity nodal lines, whereas the mechanical transition reflects the emergence of a vortex configuration that shows rigidity percolation statistics for vortex centres. We show that both transitions are absent in equilibrium systems that obey detailed balance, demonstrating that the transition is intrinsically non-equilibrium. These results establish an experimentally accessible definition of fully developed active turbulence, linking microscopic activity to macroscopic geometry, and mechanics of living systems.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"24 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149087837","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Deterministic and programmable fusion for the scalable generation of photonic graph states 光子图态可扩展生成的确定性和可编程融合

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2026-09-30 DOI: 10.1038/s41567-026-03471-5

Yan Li, Yunfan Yang, Zenghui Bao, Jize Yang, Luyan Sun, Yipu Song, Yukai Wu, Hongyi Zhang, Luming Duan

{"title":"Deterministic and programmable fusion for the scalable generation of photonic graph states","authors":"Yan Li, Yunfan Yang, Zenghui Bao, Jize Yang, Luyan Sun, Yipu Song, Yukai Wu, Hongyi Zhang, Luming Duan","doi":"10.1038/s41567-026-03471-5","DOIUrl":"https://doi.org/10.1038/s41567-026-03471-5","url":null,"abstract":"Entanglement in multiphoton graph states is an important resource for applications such as measurement-based quantum computing and memoryless quantum repeaters. However, most experimental demonstrations have only successfully prepared small-scale instances. A method known as fusion provides a divide-and-conquer approach that can link smaller resource states into larger, more complex graphs. Its practical scalability in linear optical systems has been limited by the probabilistic nature of conventional fusion protocols, which necessitates extensive hardware overhead and feed-forward resources to achieve deterministic outcomes. Here we introduce and experimentally demonstrate a deterministic fusion operation on a superconducting circuit device with built-in error mitigation. Our scheme can connect small time-bin-encoded cluster states that are generated on demand into larger, reconfigurable photonic graph states of increased size. We implement fusion by non-destructively projecting pairs of flying microwave photons into Bell states. The protocol involves the active reset and reuse of superconducting qubits to circumvent the effects of decoherence. We demonstrate genuine multipartite entanglement across 13 photonic qubits, establishing a scalable framework for photonic graph-state synthesis.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"298 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2026-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149087856","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Multiscale transitional flow in anisotropic nanoparticle suspensions revealed by time-resolved X-ray scatter microscopy 时间分辨x射线散射显微镜研究各向异性纳米颗粒悬浮液的多尺度过渡流动

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2026-09-29 DOI: 10.1038/s41567-026-03467-1

Kesavan Sekar, Viney Ghai, Reza Ghanbari, Marko Bek, Marianne Liebi, Aleksandar Matic, Ann E. Terry, Kim Nygård, Roland Kádár

{"title":"Multiscale transitional flow in anisotropic nanoparticle suspensions revealed by time-resolved X-ray scatter microscopy","authors":"Kesavan Sekar, Viney Ghai, Reza Ghanbari, Marko Bek, Marianne Liebi, Aleksandar Matic, Ann E. Terry, Kim Nygård, Roland Kádár","doi":"10.1038/s41567-026-03467-1","DOIUrl":"https://doi.org/10.1038/s41567-026-03467-1","url":null,"abstract":"Complex fluids transition from laminar to transitional flow above a critical control parameter, in a similar manner to their Newtonian counterparts. In a continuum mechanics sense, fluid elements follow the ensuing complex trajectories, which gives rise to secondary flows in terms of macroscopic vortices. However, it is not known whether their trajectories exhibit the same spatiotemporal behaviour as the macroscopic flow field if idealized fluid elements are replaced with actual anisotropic nanoparticles. Here, to address this fundamental question, we develop a multiscale method that combines small-angle X-ray scatter microscopy with polarized light imaging, thereby bridging seven orders of magnitude in length scales. We demonstrate proof of principle for Taylor–Couette flow—a classical transitional flow problem—of platelet-like graphene oxide nanoparticle and rod-like cellulose nanocrystal suspensions. The analysis shows markedly different multiscale dynamics underlying flow stability: whereas the platelet-like particles follow the macroscopic dynamics of the secondary flows, as expected for high rotational Péclet numbers, the rod-like particles exhibit characteristic high-frequency orientational motion at moderate rotational Péclet numbers that correlates with the turnover frequency of the vortex instabilities.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"476 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2026-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149087857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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

Topology from disorder 无序拓扑

IF 18 1区物理与天体物理

Nature Physics Pub Date : 2026-09-28 DOI: 10.1038/s41567-026-03459-1

Jens Hertkorn, Botond Oreg

引用次数: 0

Hyperbolic wave attractors 双曲波吸引子

IF 19.6 1区物理与天体物理

Nature Physics Pub Date : 2026-09-28 DOI: 10.1038/s41567-026-03453-7

Simon Yves, Enrico M. Renzi, Sander A. Mann, Andrea Alù

{"title":"Hyperbolic wave attractors","authors":"Simon Yves, Enrico M. Renzi, Sander A. Mann, Andrea Alù","doi":"10.1038/s41567-026-03453-7","DOIUrl":"https://doi.org/10.1038/s41567-026-03453-7","url":null,"abstract":"Wave behaviour in irregular cavities is typically dominated by chaos, whose diverging trajectories are highly sensitive to initial conditions due to complex internal reflections, and this limits control and stability. Here we show that odd-shaped cavities formed in hyperbolic media suppress chaotic wave dynamics and instead give rise to hyperbolic wave attractors: robust, chiral, broadband and scale-invariant states that organize wave motion analogously to limit cycles in nonlinear dynamical systems. Their defining properties differ from both conventional resonant cavities and chaotic modes. We experimentally demonstrate this phenomenon using elastodynamic waves in a hyperbolic metamaterial and reveal attractor phase transitions, symmetry-driven features and robustness against defects. These results show that wave-attractor physics extends across natural and artificial hyperbolic media and reveal how simultaneous symmetry breaking in the material and cavity geometry produces robust, chiral wave organization in a fully linear system. This work opens possibilities for compact, multifunctional devices in wave-based signal processing and sensing systems by merging functionalities traditionally associated with large, wavelength-scale structures with those of deeply subwavelength cavities.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"37 1","pages":""},"PeriodicalIF":19.6,"publicationDate":"2026-09-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149087821","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"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