Nature Photonics最新文献

{"title":"Magneto-optics enhances in-memory computing","authors":"Sijie Ma, Bangsen Ouyang, Yang Chai","doi":"10.1038/s41566-024-01599-5","DOIUrl":"10.1038/s41566-024-01599-5","url":null,"abstract":"Non-reciprocal magneto-optics memory enables an integrated photonic platform that supports powerful matrix-vector multiplication computing and fast, efficient, fatigue-free programming capabilities.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 1","pages":"9-10"},"PeriodicalIF":32.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142935592","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}

{"title":"A digital solution towards deep optical imaging","authors":"Alexandre Aubry","doi":"10.1038/s41566-024-01594-w","DOIUrl":"10.1038/s41566-024-01594-w","url":null,"abstract":"Computational back-projection and averaging of as little as 25 scattered fields from an object enables imaging through turbid media without using a guide star or knowledge of the reflection matrix.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 1","pages":"3-4"},"PeriodicalIF":32.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142935684","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}

{"title":"Wilson Sibbett (1948–2024)","authors":"James Roy Taylor","doi":"10.1038/s41566-024-01600-1","DOIUrl":"10.1038/s41566-024-01600-1","url":null,"abstract":"Wilson Sibbett, a highly respected member of the international optics and laser community, left us on the 15th October 2024.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 1","pages":"1-2"},"PeriodicalIF":32.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142935482","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}

{"title":"Efficient second-harmonic generation in 3D colloidal crystals","authors":"Hui Zhao","doi":"10.1038/s41566-024-01598-6","DOIUrl":"10.1038/s41566-024-01598-6","url":null,"abstract":"Metasurfaces offer new possibilities for nonlinear optics, but efficiency is an issue. Researchers have now used DNA-mediated assembly to produce 3D nonlinear optical colloidal crystals whose effective nonlinear susceptibility rivals that of traditional dielectric nonlinear optical crystals.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 1","pages":"7-8"},"PeriodicalIF":32.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142935763","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}

{"title":"Processing quantum randomness with light","authors":"Stefano Paesani","doi":"10.1038/s41566-024-01606-9","DOIUrl":"10.1038/s41566-024-01606-9","url":null,"abstract":"A programmable integrated photonic circuit that works with single photons has enabled the construction of quantum-to-quantum Bernoulli factories, devices that process randomness in quantum states.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 1","pages":"5-6"},"PeriodicalIF":32.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142935593","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}

{"title":"Broadband hyperspectral imaging","authors":"Giampaolo Pitruzzello","doi":"10.1038/s41566-024-01597-7","DOIUrl":"10.1038/s41566-024-01597-7","url":null,"abstract":"","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 1","pages":"11-11"},"PeriodicalIF":32.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142935591","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}

{"title":"Nonlinear valley selection rules and all-optical probe of broken time-reversal symmetry in monolayer WSe2","authors":"Paul Herrmann, Sebastian Klimmer, Thomas Lettau, Till Weickhardt, Anastasios Papavasileiou, Kseniia Mosina, Zdeněk Sofer, Ioannis Paradisanos, Daniil Kartashov, Jan Wilhelm, Giancarlo Soavi","doi":"10.1038/s41566-024-01591-z","DOIUrl":"10.1038/s41566-024-01591-z","url":null,"abstract":"In monolayer transition metal dichalcogenides, time-reversal symmetry—combined with broken space-inversion symmetry—defines the spin–valley degree of freedom. As such, the engineering and control of time-reversal symmetry by optical or magnetic fields constitutes the foundation of valleytronics. Here we propose a new approach for the detection of broken time-reversal symmetry and valley imbalance in monolayer WSe2 based on second-harmonic generation. At room temperature, our method can selectively probe a net valley imbalance generated by ultrafast, coherent and valley-exclusive optical Stark and Bloch–Siegert effects. This work demonstrates the potential and unique capabilities of nonlinear optics as a probe of broken time-reversal symmetry as well as a tool for ultrafast and non-destructive valleytronic operations. The feasibility of using second-harmonic generation to measure the broken time-reversal symmetry and valley polarization in monolayer WSe2 is presented, simplifying the process of probing valleys on ultrafast timescales without perturbing the system.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 3","pages":"300-306"},"PeriodicalIF":32.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.nature.com/articles/s41566-024-01591-z.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142934836","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}

{"title":"Spontaneous phase locking in a broad-area semiconductor laser","authors":"Stefan Bittner, Marc Sciamanna","doi":"10.1038/s41566-024-01604-x","DOIUrl":"10.1038/s41566-024-01604-x","url":null,"abstract":"Broad-area semiconductor lasers are used in many high-power applications; however, their spatio-temporal dynamics are complex and intrinsically unstable due to the interaction between transverse lasing modes. Here a dynamical and ultrahigh-resolution spatio-spectral analysis of commercial broad-area lasers reveals multiplets of phase-locked first- and second-order transverse modes that are spontaneously created by the nonlinear dynamics of the laser. Phase locking between modes of different transverse order is confirmed by comparing the linewidths of the lasing modes with that of their beat note and by a direct measurement of their phase fluctuation correlations. The spontaneous phase locking is unexpected since the overall dynamics are unstable and the system lacks any intentional feature to induce locking. This partially synchronized dynamical state with groups of coexisting synchronized and unsynchronized laser modes is similar to chimera states found in networks of coupled oscillators, indicating that such states may exist in a wider range of systems than previously assumed. Nonlinearity-induced spontaneous phase locking of transverse modes is observed in a broad-area semiconductor laser.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 3","pages":"315-321"},"PeriodicalIF":32.3,"publicationDate":"2025-01-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142934837","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}

{"title":"Optical atomic clock interrogation using an integrated spiral cavity laser","authors":"William Loh, David Reens, Dave Kharas, Alkesh Sumant, Connor Belanger, Ryan T. Maxson, Alexander Medeiros, William Setzer, Dodd Gray, Kyle DeBry, Colin D. Bruzewicz, Jason Plant, John Liddell, Gavin N. West, Sagar Doshi, Matthew Roychowdhury, May E. Kim, Danielle Braje, Paul W. Juodawlkis, John Chiaverini, Robert McConnell","doi":"10.1038/s41566-024-01588-8","DOIUrl":"10.1038/s41566-024-01588-8","url":null,"abstract":"Optical atomic clocks have demonstrated revolutionary advances in precision timekeeping, but their applicability to the real world is critically dependent on whether such clocks can operate outside the laboratory. Photonic integration offers one compelling solution to address the miniaturization and ruggedization needed to enable clock portability, but brings with it a new set of challenges in recreating the functionality of an optical clock using chip-scale building blocks. The clock laser used for atom interrogation is one particular point of uncertainty, as the performance of the meticulously engineered bulk-cavity-stabilized lasers would be exceptionally difficult to transfer to chip. Here we demonstrate that an integrated ultrahigh-quality-factor spiral cavity, when interfaced with a 1,348 nm seed laser, is able to reach a fractional frequency instability of 7.5 × 10−14 on chip. On frequency doubling the light to 674 nm, we use this laser to interrogate the narrow-linewidth transition of 88Sr+ and showcase the operation of a Sr-ion clock with short-term instability averaging down as $$3.9times 1{0}^{-14}/sqrt{tau }$$ (τ, averaging time). Our demonstration of a high-performance optical atomic clock interrogated by an integrated spiral cavity laser opens the door for future advanced clock systems to be entirely constructed using lightweight, portable and mass-manufacturable integrated optics and electronics. A chip-integrated laser with 7.5 × 10−14 fractional frequency instability is demonstrated by active stabilization to an on-chip 6.1-m-long spiral resonator. By using this laser to interrogate the narrow-linewidth transition of 88Sr+, a clock instability averaging down as $$3.9times 1{0}^{-14}/sqrt{tau }$$ is achieved.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 3","pages":"277-283"},"PeriodicalIF":32.3,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929538","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}

{"title":"Ultrafast nano-imaging of dark excitons","authors":"David Schmitt, Jan Philipp Bange, Wiebke Bennecke, Giuseppe Meneghini, AbdulAziz AlMutairi, Marco Merboldt, Jonas Pöhls, Kenji Watanabe, Takashi Taniguchi, Sabine Steil, Daniel Steil, R. Thomas Weitz, Stephan Hofmann, Samuel Brem, G. S. Matthijs Jansen, Ermin Malic, Stefan Mathias, Marcel Reutzel","doi":"10.1038/s41566-024-01568-y","DOIUrl":"10.1038/s41566-024-01568-y","url":null,"abstract":"Understanding the impact of spatial heterogeneity on the behaviour of two-dimensional materials represents one of the grand challenges in applying these materials in optoelectronics and quantum information science. For transition metal dichalcogenide heterostructures in particular, direct access to heterogeneities in the dark-exciton landscape with nanometre spatial and ultrafast time resolution is highly desired but remains largely elusive. Here we report how ultrafast dark-field momentum microscopy can spatio-temporally resolve dark-exciton formation dynamics in a twisted WSe2/MoS2 heterostructure with a time resolution of 55 fs and a spatial resolution of 480 nm. This enables us to directly map spatial heterogeneity in the electronic and excitonic structure, and to correlate this with the dark-exciton formation and relaxation dynamics. The advantage of the simultaneous ultrafast nanoscale dark-field momentum microscopy and spectroscopy reported here is that it enables spatio-temporal imaging of the photoemission spectral function that carries energy- and momentum-resolved information on the single-particle band structure, many-body interactions and correlation phenomena. Dark-field momentum microscopy makes it possible to spatio-temporally and spatio-spectrally resolve the dark-exciton dynamics in a twisted transition metal dichalcogenide heterostructure.","PeriodicalId":18926,"journal":{"name":"Nature Photonics","volume":"19 2","pages":"187-194"},"PeriodicalIF":32.3,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142917086","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}