Communications Physics最新文献_第2页

Relative subsystems and quantum reference frame transformations. 相对子系统和量子参照系变换。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-04-30 DOI: 10.1038/s42005-025-02036-x

Esteban Castro-Ruiz, Ognyan Oreshkov

引用次数: 0

Controlling noise with self-organized resetting. 用自组织复位控制噪声。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-02-12 DOI: 10.1038/s42005-025-01985-7

Felix J Meigel, Steffen Rulands

{"title":"Controlling noise with self-organized resetting.","authors":"Felix J Meigel, Steffen Rulands","doi":"10.1038/s42005-025-01985-7","DOIUrl":"10.1038/s42005-025-01985-7","url":null,"abstract":"Biological systems often consist of a small number of constituents and are therefore inherently noisy. To function effectively, these systems must employ mechanisms to constrain the accumulation of noise. Such mechanisms have been extensively studied and comprise the constraint by external forces, nonlinear interactions, or the resetting of the system to a predefined state. Here, we propose a fourth paradigm for noise constraint: self-organized resetting, where the resetting rate and position emerge from self-organization through time-discrete interactions. We study general properties of self-organized resetting systems using the paradigmatic example of cooperative resetting, where random pairs of Brownian particles are reset to their respective average. We demonstrate that such systems undergo a delocalization phase transition, separating regimes of constrained and unconstrained noise accumulation. Additionally, we show that systems with self-organized resetting can adapt to external forces and optimize search behavior for reaching target values. Self-organized resetting has various applications in nature and technology, which we demonstrate in the context of sexual interactions in fungi and spatial dispersion in shared mobility services. This work opens routes into the application of self-organized resetting across various systems in biology and technology.","PeriodicalId":10540,"journal":{"name":"Communications Physics","volume":"8 1","pages":"63"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11813803/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143413634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

High-purity and stable single-photon emission in bilayer WSe₂ via phonon-assisted excitation. 双分子层WSe2声子辅助激发的高纯度稳定单光子发射。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-04-14 DOI: 10.1038/s42005-025-02080-7

Claudia Piccinini, Athanasios Paralikis, José Ferreira Neto, Abdulmalik A Madigawa, Paweł Wyborski, Vikas Remesh, Luca Vannucci, Niels Gregersen, Battulga Munkhbat

{"title":"High-purity and stable single-photon emission in bilayer WSe2 via phonon-assisted excitation.","authors":"Claudia Piccinini, Athanasios Paralikis, José Ferreira Neto, Abdulmalik A Madigawa, Paweł Wyborski, Vikas Remesh, Luca Vannucci, Niels Gregersen, Battulga Munkhbat","doi":"10.1038/s42005-025-02080-7","DOIUrl":"https://doi.org/10.1038/s42005-025-02080-7","url":null,"abstract":"The excitation scheme is essential for single-photon sources, as it governs exciton preparation, decay dynamics, and the spectral diffusion of emitted photons. While phonon-assisted excitation has shown promise in other quantum emitter platforms, its proper implementation and systematic comparison with alternative excitation schemes have not yet been demonstrated in transition metal dichalcogenide (TMD) quantum emitters. Here, we investigate the impact of various optical excitation strategies on the single-photon emission properties of bilayer WSe2 quantum emitters. Based on our theoretical predictions for the exciton preparation fidelity, we compare the excitation via the longitudinal acoustic and breathing phonon modes to conventional above-band and near-resonance excitations. Under acoustic phonon-assisted excitation, we achieve narrow single-photon emission with a reduced spectral diffusion of 0.0129 nm, a 1.8-fold improvement over above-band excitation. Additionally, excitation through breathing-phonon mode yields a high purity of 0.947 ± 0.079 and reduces the decay time by over an order of magnitude, reaching (1.33 ± 0.04) ns. Our comprehensive study demonstrates the crucial role of phonon-assisted excitation in optimizing the performance of WSe2-based quantum emitters, providing valuable insights for the development of single-photon sources for quantum photonics applications.","PeriodicalId":10540,"journal":{"name":"Communications Physics","volume":"8 1","pages":"158"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11996677/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143957674","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dissipation-induced non-equilibrium phases with temporal and spatial order. 耗散诱导非平衡相的时空顺序。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-05-22 DOI: 10.1038/s42005-025-02113-1

Zhao Zhang, Davide Dreon, Tilman Esslinger, Dieter Jaksch, Berislav Buca, Tobias Donner

{"title":"Dissipation-induced non-equilibrium phases with temporal and spatial order.","authors":"Zhao Zhang, Davide Dreon, Tilman Esslinger, Dieter Jaksch, Berislav Buca, Tobias Donner","doi":"10.1038/s42005-025-02113-1","DOIUrl":"10.1038/s42005-025-02113-1","url":null,"abstract":"Understanding spatial and temporal order in many-body systems is a key challenge, particularly in out-of-equilibrium settings. A major hurdle is developing controlled model systems to study these phases. We propose an experiment with a driven quantum gas coupled to a dissipative optical cavity, realizing a non-equilibrium phase diagram featuring both spatial and temporal order. The system's control parameter is the detuning between the drive frequency and cavity resonance. Negative detunings yield a spatially ordered phase, while positive detunings produce phases with both spatial order and persistent oscillations, forming dissipative spatio-temporal lattices. We also identify a phase where the dynamics dephase, leading to chaotic behavior. Numerical and analytical evidence supports these superradiant phases, showing that the spatio-temporal lattice originates from cavity dissipation. The atoms experience accelerated transport, either via uniform acceleration or abrupt momentum transitions. Our work provides insights into temporal phases of matter not possible at equilibrium.","PeriodicalId":10540,"journal":{"name":"Communications Physics","volume":"8 1","pages":"211"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12098123/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144141602","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Many-body phases from effective geometrical frustration and long-range interactions in a subwavelength lattice. 亚波长晶格中有效几何挫折和远距离相互作用的多体相。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-04-08 DOI: 10.1038/s42005-025-02043-y

D Burba, G Juzeliūnas, I B Spielman, L Barbiero

引用次数: 0

Carrier-envelope-phase characterization of ultrafast mid-infrared laser pulses through harmonic generation and interference in argon. 超快中红外激光脉冲在氩气中谐波产生和干涉的载波包络相位表征。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-01-21 DOI: 10.1038/s42005-025-01949-x

Claudia Gollner, Valentina Shumakova, Jacob Barker, Audrius Pugžlys, Andrius Baltuška, Pavel Polynkin

引用次数: 0

Elf autoencoder for unsupervised exploration of flat-band materials using electronic band structure fingerprints. Elf自动编码器用于无监督探索平面带材料使用电子带结构指纹。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-01-17 DOI: 10.1038/s42005-025-01936-2

Henry Kelbrick Pentz, Thomas Warford, Ivan Timokhin, Hongpeng Zhou, Qian Yang, Anupam Bhattacharya, Artem Mishchenko

{"title":"Elf autoencoder for unsupervised exploration of flat-band materials using electronic band structure fingerprints.","authors":"Henry Kelbrick Pentz, Thomas Warford, Ivan Timokhin, Hongpeng Zhou, Qian Yang, Anupam Bhattacharya, Artem Mishchenko","doi":"10.1038/s42005-025-01936-2","DOIUrl":"10.1038/s42005-025-01936-2","url":null,"abstract":"Two-dimensional materials with flat electronic bands are promising for realising exotic quantum phenomena such as unconventional superconductivity and nontrivial topology. However, exploring their vast chemical space is a significant challenge. Here we introduce elf, an unsupervised convolutional autoencoder that encodes electronic band structure images into fingerprint vectors, enabling the autonomous clustering of materials by electronic properties beyond traditional chemical paradigms. Unsupervised visualisation of the fingerprint space then uncovers hidden chemical trends and identifies promising candidates based on similarities to well-studied exemplars. This approach complements high-throughput ab initio methods by rapidly screening candidates and guiding further investigations into the mechanisms underlying flat-band physics. The elf autoencoder is a powerful tool for autonomous discovery of unexplored flat-band materials, enabling unbiased identification of compounds with desirable electronic properties across the 2D chemical space.","PeriodicalId":10540,"journal":{"name":"Communications Physics","volume":"8 1","pages":"25"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11756449/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143028150","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Divertor shaping with neutral baffling as a solution to the tokamak power exhaust challenge. 采用中性挡板的导流器成型解决托卡马克动力排气难题。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-05-23 DOI: 10.1038/s42005-025-02121-1

Kevin Verhaegh, James Harrison, David Moulton, Bruce Lipschultz, Nicola Lonigro, Nick Osborne, Peter Ryan, Christian Theiler, Tijs Wijkamp, Dominik Brida, Cyd Cowley, Gijs Derks, Rhys Doyle, Fabio Federici, Bob Kool, Olivier Février, Antti Hakola, Stuart Henderson, Holger Reimerdes, Andrew Thornton, Nicola Vianello, Marco Wischmeier, Lingyan Xiang

{"title":"Divertor shaping with neutral baffling as a solution to the tokamak power exhaust challenge.","authors":"Kevin Verhaegh, James Harrison, David Moulton, Bruce Lipschultz, Nicola Lonigro, Nick Osborne, Peter Ryan, Christian Theiler, Tijs Wijkamp, Dominik Brida, Cyd Cowley, Gijs Derks, Rhys Doyle, Fabio Federici, Bob Kool, Olivier Février, Antti Hakola, Stuart Henderson, Holger Reimerdes, Andrew Thornton, Nicola Vianello, Marco Wischmeier, Lingyan Xiang","doi":"10.1038/s42005-025-02121-1","DOIUrl":"https://doi.org/10.1038/s42005-025-02121-1","url":null,"abstract":"Exhausting power from the hot fusion core to the plasma-facing components is one fusion energy's biggest challenges. The MAST Upgrade tokamak uniquely integrates strong containment of neutrals within the exhaust area (divertor) with extreme divertor shaping capability. By systematically altering the divertor shape, this study shows the strongest evidence to date to our knowledge that long-legged divertors with a high magnetic field gradient (total flux expansion) deliver key power exhaust benefits without adversely impacting the hot fusion core. These benefits are already achieved with relatively modest geometry adjustments that are more feasible to integrate in reactor designs. Benefits include reduced target heat loads and improved access to, and stability of, a neutral gas buffer that 'shields' the target and enhances power exhaust (detachment). Analysis and model comparisons shows these benefits are obtained by combining multiple shaping aspects: long-legged divertors have expanded plasma-neutral interaction volume that drive reductions in particle and power loads, while total flux expansion enhances detachment access and stability. Containing the neutrals in the exhaust area with physical structures further augments these shaping benefits. These results demonstrate strategic variation in the divertor geometry and magnetic topology is a potential solution to one of fusion's power exhaust challenge.","PeriodicalId":10540,"journal":{"name":"Communications Physics","volume":"8 1","pages":"215"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12098118/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144207869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hilbert space fragmentation at the origin of disorder-free localization in the lattice Schwinger model. 晶格Schwinger模型中无无序局部化起源处的Hilbert空间碎片。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-04-18 DOI: 10.1038/s42005-025-02039-8

Jared Jeyaretnam, Tanmay Bhore, Jesse J Osborne, Jad C Halimeh, Zlatko Papić

{"title":"Hilbert space fragmentation at the origin of disorder-free localization in the lattice Schwinger model.","authors":"Jared Jeyaretnam, Tanmay Bhore, Jesse J Osborne, Jad C Halimeh, Zlatko Papić","doi":"10.1038/s42005-025-02039-8","DOIUrl":"https://doi.org/10.1038/s42005-025-02039-8","url":null,"abstract":"Lattice gauge theories, the discrete counterparts of continuum gauge theories, provide a rich framework for studying non-equilibrium quantum dynamics. Recent studies suggest disorder-free localization in the lattice Schwinger model, but its origin remains unclear. Using a combination of analytical and numerical methods, we show that Hilbert space fragmentation emerges in the strong coupling limit, constraining particle dynamics and causing sharp jumps in entanglement entropy growth within charge sectors. By analyzing jump statistics, we find that entanglement growth follows a single-logarithmic or weak power-law dependence on time, rather than a double-logarithmic form. This suggests a single ergodicity-breaking regime that mimics many-body localization in finite systems due to fragmentation effects. Our findings clarify the nature of disorder-free localization and its distinction from conventional many-body localization, highlighting how gauge constraints influence thermalization in lattice gauge theories.","PeriodicalId":10540,"journal":{"name":"Communications Physics","volume":"8 1","pages":"172"},"PeriodicalIF":5.4,"publicationDate":"2025-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12008026/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143964786","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectroscopy of two-dimensional interacting lattice electrons using symmetry-aware neural backflow transformations. 利用对称感知神经回流变换的二维相互作用晶格电子光谱学。

IF 5.4 1区物理与天体物理

Communications Physics Pub Date : 2025-01-01 Epub Date: 2025-01-30 DOI: 10.1038/s42005-025-01955-z

Imelda Romero, Jannes Nys, Giuseppe Carleo

引用次数: 0