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Quantum state processing through controllable synthetic temporal photonic lattices.
Nat Photonics
October 2024
Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications, Varennes, Quebec Canada.
Quantum walks on photonic platforms represent a physics-rich framework for quantum measurements, simulations and universal computing. Dynamic reconfigurability of photonic circuitry is key to controlling the walk and retrieving its full operation potential. Universal quantum processing schemes based on time-bin encoding in gated fibre loops have been proposed but not demonstrated yet, mainly due to gate inefficiencies.
View Article and Find Full Text PDFPhotocatalytic asymmetric C-C coupling for CO reduction on dynamically reconstructed Ru-O/Ru-O sites.
Nat Commun
January 2025
Department of Chemical and Petroleum Engineering, University of Calgary, 2500 University Drive, NW, Calgary, AB, Canada.
Solar-driven CO reduction to value-added C chemicals is thermodynamically challenging due to multiple complicated steps. The design of active sites and structures for photocatalysts is necessary to improve solar energy efficiency. In this work, atomically dispersed Ru-O sites in RuInO are constructed by interior lattice anchoring of Ru.
View Article and Find Full Text PDFLattice Oxygen Redox Dynamics in Zeolite-Encapsulated CsPbBr Perovskite OER Electrocatalysts.
Adv Sci (Weinh)
January 2025
Key Laboratory of Applied Surface and Colloid Chemistry, Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, P. R. China.
Understanding the oxygen evolution reaction (OER) mechanism is pivotal for improving the overall efficiency of water electrolysis. Despite methylammonium lead halide perovskites (MAPbX) have shown promising OER performance due to their soft-lattice nature that allows lattice-oxygen oxidation of active α-PbO layer surface, the role of A-site MA or X-site elements in the electrochemical reconstruction and OER mechanisms has yet to be explored. Here, it is demonstrated that the OER mechanism of perovskite@zeolite composites is intrinsically dominated by the A-site group of lead-halide perovskites, while the type of X-site halogen is crucial for the reconstruction kinetics of the composites.
View Article and Find Full Text PDFTwo-dimensional non-Hermitian skin effect in an ultracold Fermi gas.
Nature
January 2025
Department of Physics, The Hong Kong University of Science and Technology, Kowloon, Hong Kong, China.
The concept of non-Hermiticity has expanded the understanding of band topology, leading to the emergence of counter-intuitive phenomena. An example is the non-Hermitian skin effect (NHSE), which involves the concentration of eigenstates at the boundary. However, despite the potential insights that can be gained from high-dimensional non-Hermitian quantum systems in areas such as curved space, high-order topological phases and black holes, the realization of this effect in high dimensions remains unexplored.
View Article and Find Full Text PDFComputational prediction of novel two-dimensional tungsten nitride superconductors.
J Phys Condens Matter
January 2025
Escuela de Artes Plásticas y Audiovisuales, Benemerita Universidad Autonoma de Puebla, Av. San Claudio y Blvd. 18 Sur, Edificios 1IF1, 2IF1 y 3IF1, Ciudad Universitaria, Colonia San Manuel, Puebla, Puebla, 72570, MEXICO.
Transition metal nitrides are well-known 3D superconductor materials. However, there is a lack of knowledge related to their two-dimensional (2D) counterparts, which have several potential technological applications. In this work, we predict, using an evolutionary algorithm coupled with a first-principles approach, a set of novel 2D superconductive structures based on tungsten nitride.
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