Nature Physics最新文献_第7页

Intertwined orders in a quantum material 量子材料中相互交织的顺序

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-11 DOI: 10.1038/s41567-025-02942-5

Giacomo Mazza

引用次数: 0

First-principles diagrammatic Monte Carlo for electron–phonon interactions and polaron 电子-声子相互作用和极化子的第一原理图解蒙特卡罗

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-10 DOI: 10.1038/s41567-025-02954-1

Yao Luo, Jinsoo Park, Marco Bernardi

{"title":"First-principles diagrammatic Monte Carlo for electron–phonon interactions and polaron","authors":"Yao Luo, Jinsoo Park, Marco Bernardi","doi":"10.1038/s41567-025-02954-1","DOIUrl":"10.1038/s41567-025-02954-1","url":null,"abstract":"In condensed matter, phonons—quanta of the lattice vibration field—couple with electrons, leading to the formation of entangled electron–phonon states called polarons. In the intermediate- and strong-coupling regimes common to many conventional and quantum materials, a many-body treatment of polarons requires adding up a large number of electron–phonon Feynman diagrams. In this regard, diagrammatic Monte Carlo is an efficient method for diagram summation and has been used to study polarons within simplified electron–phonon models. Here we develop diagrammatic Monte Carlo calculations based on accurate first-principles electron–phonon interactions, enabling numerically exact results for the ground-state and dynamical properties of polarons in real materials. We implement these calculations in LiF, SrTiO3, and rutile and anatase TiO2, and describe both localized and delocalized polarons. Our work enables the precise modeling of electron–phonon interactions and polarons in coupling regimes ranging from weak to strong. The results will provide deeper insights into transport phenomena, linear response and superconductivity within the strong electron–phonon coupling regime. Diagrammatic Monte Carlo calculations accurately describe polarons in different theoretical models. Now, integrating this with accurate first-principles calculations can describe the ground-state and dynamic properties of polarons in real materials.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 8","pages":"1275-1282"},"PeriodicalIF":18.4,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144593846","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

Ytterbium dopants for quantum simulation 量子模拟用镱掺杂剂

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-09 DOI: 10.1038/s41567-025-02948-z

Diana Serrano

引用次数: 0

Quantum thermalization and Floquet engineering in a spin ensemble with a clock transition 具有时钟跃迁的自旋系综中的量子热化和Floquet工程

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-09 DOI: 10.1038/s41567-025-02943-4

Mi Lei, Rikuto Fukumori, Chun-Ju Wu, Edwin Barnes, Sophia E. Economou, Joonhee Choi, Andrei Faraon

{"title":"Quantum thermalization and Floquet engineering in a spin ensemble with a clock transition","authors":"Mi Lei, Rikuto Fukumori, Chun-Ju Wu, Edwin Barnes, Sophia E. Economou, Joonhee Choi, Andrei Faraon","doi":"10.1038/s41567-025-02943-4","DOIUrl":"10.1038/s41567-025-02943-4","url":null,"abstract":"Platforms that enable the study and control of quantum many-body interactions are fundamentally important in quantum science and related emerging technologies. Optically addressable solid-state spins offer scalability to a large Hilbert space but suffer from large on-site disorder and undesired couplings to the environment. Here we investigated a strongly interacting ensemble of millions of optically addressable ytterbium-171 ions in a crystal. This platform features a clock transition that is first-order insensitive to magnetic fluctuations, thus exhibiting superior coherence and small disorder. Notably, the clock transition also gives rise to pure spin-exchange interactions, realizing the dipolar XY model, which is difficult to access in other solid-state spin systems. We exploited this feature to investigate quantum thermalization by varying the relative ratio of interaction strength to disorder, dynamically engineering the XY model into other many-body Hamiltonian models and realizing a time-crystalline phase of matter through periodic driving. Our results demonstrated that an ensemble of rare earth ions serves as a versatile test bed for many-body physics and developing quantum technologies. Using Floquet engineering, an ensemble of ytterbium-171 ions in an yttrium orthovanadate host crystal provides a platform for studying the dynamics of different quantum many-body models, including the realization of a time-crystalline phase.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 8","pages":"1196-1202"},"PeriodicalIF":18.4,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144586399","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

Nanophotonic quantum skyrmions enabled by semiconductor cavity quantum electrodynamics 半导体腔量子电动力学实现的纳米光子量子粒子

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-09 DOI: 10.1038/s41567-025-02973-y

Jiantao Ma, Jiawei Yang, Shunfa Liu, Bo Chen, Xueshi Li, Changkun Song, Guixin Qiu, Kai Zou, Xiaolong Hu, Feng Li, Ying Yu, Jin Liu

{"title":"Nanophotonic quantum skyrmions enabled by semiconductor cavity quantum electrodynamics","authors":"Jiantao Ma, Jiawei Yang, Shunfa Liu, Bo Chen, Xueshi Li, Changkun Song, Guixin Qiu, Kai Zou, Xiaolong Hu, Feng Li, Ying Yu, Jin Liu","doi":"10.1038/s41567-025-02973-y","DOIUrl":"10.1038/s41567-025-02973-y","url":null,"abstract":"Skyrmions are topologically stable quasiparticles that have been investigated in contexts including particle physics, quantum field theory, acoustics and condensed-matter physics. Quantum optical skyrmions with local topological textures are expected to reshape the landscape of quantum photonic technology, although their experimental implementation has not yet been demonstrated. Here we present experimental realizations of nanophotonic quantum skyrmions using a semiconductor cavity quantum electrodynamics system. By manipulating the photonic spin–orbit coupling in a Gaussian microcavity, we obtained a confined optical mode whose polarizations feature skyrmionic topologies. With pronounced cavity quantum electrodynamics effects, we generated and detected single-photon skyrmions from a solid-state quantum emitter deterministically coupled to the Gaussian microcavity. The polarity associated with single-photon skyrmions can be swapped by flipping the polarization of the quantum emitter through the Zeeman effect. We also investigated the topological protection of quantum optical skyrmions under different perturbations. Our work opens an unexplored aspect of quantum light–matter interactions in the nanoscale and might advance resilient photonic quantum technology with high-dimensional qubits and high-capacity quantum memories. Quantum optical skyrmions are promising for quantum photonic applications but have not been experimentally realized. Now nanophotonic quantum skyrmions are generated using a semiconductor quantum dot–Gaussian microcavity quantum electrodynamics system.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 9","pages":"1462-1468"},"PeriodicalIF":18.4,"publicationDate":"2025-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144586398","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

Publisher Correction: Absence of heat flow in ν = 0 quantum Hall ferromagnet in bilayer graphene 出版者更正：双层石墨烯中ν = 0量子霍尔铁磁体缺少热流

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-07 DOI: 10.1038/s41567-025-02977-8

Ravi Kumar, Saurabh Kumar Srivastav, Ujjal Roy, Ujjawal Singhal, K. Watanabe, T. Taniguchi, Vibhor Singh, P. Roulleau, Anindya Das

引用次数: 0

Anyonic braiding in a chiral Mach–Zehnder interferometer 手性马赫-曾德尔干涉仪中的任意子编织

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-07-02 DOI: 10.1038/s41567-025-02960-3

Bikash Ghosh, Maria Labendik, Liliia Musina, Vladimir Umansky, Moty Heiblum, David F. Mross

{"title":"Anyonic braiding in a chiral Mach–Zehnder interferometer","authors":"Bikash Ghosh, Maria Labendik, Liliia Musina, Vladimir Umansky, Moty Heiblum, David F. Mross","doi":"10.1038/s41567-025-02960-3","DOIUrl":"10.1038/s41567-025-02960-3","url":null,"abstract":"Fractional quantum statistics are the defining characteristic of anyons. Measuring the phase generated by an exchange of anyons is challenging, as standard interferometry set-ups—such as the Fabry–Pérot interferometer—suffer from charging effects that obscure the interference signal. Here we present the observation of anyonic interference and exchange phases in an optical-like Mach–Zehnder interferometer based on co-propagating interface modes. By avoiding backscattering and deleterious charging effects, this set-up enables pristine and robust Aharonov–Bohm interference without any phase slips. At various fractional filling factors, the observed flux periodicities agree with the fundamental fractionally charged excitations that correspond to Jain states and depend only on the bulk topological order. To probe the anyonic statistics, we used a small, charged top gate in the interferometer bulk to induce localized quasiparticles without modifying the Aharonov–Bohm phase. The added quasiparticles introduce periodic phase slips. The sign and magnitude of the observed phase slips align with the expected value at filling 1/3, but their direction shows systematic deviations at fillings 2/5 and 3/7. Control over added individual quasiparticles in this design is essential for measuring the coveted non-abelian statistics in the future. An interferometer design allows systematic investigation of the anyonic statistics of bulk fractional quantum Hall states.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 9","pages":"1392-1397"},"PeriodicalIF":18.4,"publicationDate":"2025-07-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144533765","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

Atoms revolt against tweezer-imposed order 原子反抗镊子强加的秩序

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-27 DOI: 10.1038/s41567-025-02946-1

A. Vukics, P. Domokos

引用次数: 0

Dynamic phase transition in 1T-TaS2 via a thermal quench 热淬火后1T-TaS2的动态相变

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-27 DOI: 10.1038/s41567-025-02938-1

Alberto de la Torre, Qiaochu Wang, Yasamin Masoumi, Benjamin Campbell, Jake V. Riffle, Dushyanthini Balasundaram, Patrick M. Vora, Jacob P. C. Ruff, Gregory A. Fiete, Shawna M. Hollen, Kemp W. Plumb

{"title":"Dynamic phase transition in 1T-TaS2 via a thermal quench","authors":"Alberto de la Torre, Qiaochu Wang, Yasamin Masoumi, Benjamin Campbell, Jake V. Riffle, Dushyanthini Balasundaram, Patrick M. Vora, Jacob P. C. Ruff, Gregory A. Fiete, Shawna M. Hollen, Kemp W. Plumb","doi":"10.1038/s41567-025-02938-1","DOIUrl":"10.1038/s41567-025-02938-1","url":null,"abstract":"Ultrafast light–matter interaction has emerged as a mechanism to control the macroscopic properties of quantum materials. However, technological applications of photoinduced phases are limited by their ultrashort lifetimes and the low temperatures required for their stabilization. One such phase is the hidden metallic charge density wave state in 1T-TaS2, whose origin and stability above cryogenic temperatures remain the subject of debate. Here, we demonstrate that this phase can be stabilized at thermal equilibrium by accessing a mixed charge density wave order regime through thermal quenching. Using X-ray high-dynamic-range reciprocal space mapping and scanning tunnelling spectroscopy, we reveal the coexistence of commensurate charge density wave and hidden metallic charge density wave domains up to 210 K. Our findings show that each order parameter breaks basal plane mirror symmetry with different chiral orientations and induces out-of-plane unit cell tripling in the hidden phase. Despite metallic domain walls and a finite density of states, the bulk resistance remains insulating due to charge density wave stacking disorder. Our results establish the hidden state as a thermally stable phase and introduce an alternative mechanism for switchable metallic behaviour in thin flakes of 1T-TaS2 and similar materials with competing phases. The photoinduced hidden metallic state in 1T-TaS2 has so far been stabilized only at cryogenic temperatures. Now it is shown that accessing an additional mixed-phase long-lived metastable state can stabilize the hidden phase at higher temperatures.","PeriodicalId":19100,"journal":{"name":"Nature Physics","volume":"21 8","pages":"1267-1274"},"PeriodicalIF":18.4,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144500765","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

Quantum neural networks can be normal 量子神经网络可以是正常的

IF 18.4 1区物理与天体物理

Nature Physics Pub Date : 2025-06-24 DOI: 10.1038/s41567-025-02941-6

Jayne Thompson

引用次数: 0