-
作者:[Anonymous]
-
作者:Diesing, S.; Zhang, L.; Zysman-Colman, E.; Samuel, I. D. W.
作者单位:University of St Andrews; University of St Andrews
摘要:Organic light-emitting diodes (OLEDs) are a revolutionary light-emitting display technology that has been successfully commercialized in mobile phones and televisions 1,2 . The injected charges form both singlet and triplet excitons, and for high efficiency it is important to enable triplets as well as singlets to emit light. At present, materials that harvest triplets by thermally activated delayed fluorescence (TADF) are a very active field of research as an alternative to phosphorescent emi...
-
作者:Bravyi, Sergey; Cross, Andrew W.; Gambetta, Jay M.; Maslov, Dmitri; Rall, Patrick; Yoder, Theodore J.
作者单位:International Business Machines (IBM); IBM USA
摘要:The accumulation of physical errors 1-3 prevents the execution of large-scale algorithms in current quantum computers. Quantum error correction 4 promises a solution by encoding k logical qubits onto a larger number n of physical qubits, such that the physical errors are suppressed enough to allow running a desired computation with tolerable fidelity. Quantum error correction becomes practically realizable once the physical error rate is below a threshold value that depends on the choice of qu...
-
作者:Slim, Jesse J.; Wanjura, Clara C.; Brunelli, Matteo; del Pino, Javier; Nunnenkamp, Andreas; Verhagen, Ewold
作者单位:AMOLF; University of Queensland; Max Planck Society; University of Basel; Swiss Federal Institutes of Technology Domain; ETH Zurich; University of Vienna
摘要:The fermionic Kitaev chain is a canonical model featuring topological Majorana zero modes1. We report the experimental realization of its bosonic analogue2 in a nano-optomechanical network, in which the parametric interactions induce beam-splitter coupling and two-mode squeezing among the nanomechanical modes, analogous to hopping and p-wave pairing in the fermionic case, respectively. This specific structure gives rise to a set of extraordinary phenomena in the bosonic dynamics and transport....
-
作者:de Wit, Xander M.; Fruchart, Michel; Khain, Tali; Toschi, Federico; Vitelli, Vincenzo
作者单位:Eindhoven University of Technology; Centre National de la Recherche Scientifique (CNRS); Universite PSL; Ecole Superieure de Physique et de Chimie Industrielles de la Ville de Paris (ESPCI); University of Chicago; Consiglio Nazionale delle Ricerche (CNR); Istituto per le Applicazioni del Calcolo Mauro Picone (IAC-CNR); University of Chicago
摘要:Fully developed turbulence is a universal and scale-invariant chaotic state characterized by an energy cascade from large to small scales at which the cascade is eventually arrested by dissipation 1-6 . Here we show how to harness these seemingly structureless turbulent cascades to generate patterns. Pattern formation entails a process of wavelength selection, which can usually be traced to the linear instability of a homogeneous state 7 . By contrast, the mechanism we propose here is fully no...
-
作者:Liu, Fan; Ting, Yuan-Sen; Yong, David; Bitsch, Bertram; Karakas, Amanda; Murphy, Michael T.; Joyce, Meridith; Dotter, Aaron; Dai, Fei
作者单位:Monash University; Swinburne University of Technology; Australian National University; Australian National University; University System of Ohio; Ohio State University; University System of Ohio; Ohio State University; Carnegie Institution for Science; Max Planck Society; University College Cork; HUN-REN; HUN-REN Research Centre for Astronomy & Earth Sciences; Konkoly Thege Miklos Astronomical Institute; Dartmouth College; California Institute of Technology; California Institute of Technology
摘要:Stellar chemical compositions can be altered by ingestion of planetary material1,2 and/or planet formation, which removes refractory material from the protostellar disk3,4. These 'planet signatures' appear as correlations between elemental abundance differences and the dust condensation temperature3,5,6. Detecting these planet signatures, however, is challenging owing to unknown occurrence rates, small amplitudes and heterogeneous star samples with large differences in stellar ages7,8. Therefo...
-
作者:Stoffers, Twan; Sayer, Catherine A.; Baratech, Adela; He, Fengzhi
作者单位:Leibniz Association; Leibniz Institut fur Gewasserokologie und Binnenfischerei (IGB); Chinese Academy of Sciences; Northeast Institute of Geography & Agroecology, CAS
摘要:Letter to the Editor
-
作者:O'Callaghan, Jonathan
摘要:OpenAI's debut of its impressive Sora text-to-video tool has raised important questions.
-
作者:[Anonymous]
摘要:Scientists controlled a hydrogen atom with electric fields to derive a highly precise estimate of the Rydberg constant.
-
作者:Ling, Emi; Nemesh, James; Goldman, Melissa; Kamitaki, Nolan; Reed, Nora; Handsaker, Robert E.; Genovese, Giulio; Vogelgsang, Jonathan S.; Gerges, Sherif; Kashin, Seva; Ghosh, Sulagna; Esposito, John M.; Morris, Kiely; Meyer, Daniel; Lutservitz, Alyssa; Mullally, Christopher D.; Wysoker, Alec; Spina, Liv; Neumann, Anna; Hogan, Marina; Ichihara, Kiku; Berretta, Sabina; Mccarroll, Steven A.
作者单位:Harvard University; Massachusetts Institute of Technology (MIT); Broad Institute; Harvard University; Harvard Medical School; Harvard University; Harvard Medical School; Harvard University; Harvard University Medical Affiliates; McLean Hospital; Harvard University; Harvard Medical School; Harvard University; Harvard Medical School
摘要:Human brains vary across people and over time; such variation is not yet understood in cellular terms. Here we describe a relationship between people's cortical neurons and cortical astrocytes. We used single-nucleus RNA sequencing to analyse the prefrontal cortex of 191 human donors aged 22-97 years, including healthy individuals and people with schizophrenia. Latent-factor analysis of these data revealed that, in people whose cortical neurons more strongly expressed genes encoding synaptic c...