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Massively parallel Hong-Ou-Mandel interference based on independent soliton microcombs.
Sci Adv
January 2025
State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, Xi'an 710119, China.
Hong-Ou-Mandel (HOM) interference is the foundation of quantum optics to test the degree of indistinguishability of two incoming photons, playing a key role in quantum communication, sensing, and photonic quantum computing. Realizing high-visibility HOM interference with massively parallel optical channels is challenging due to the lack of available natural optical references for aligning independent arrayed laser pairs. Here, we demonstrate 50 parallel comb-teeth pairs of continuous-wave weak coherent photons HOM interference using two independently frequency post-aligned soliton microcombs (SMCs), achieving an average fringe visibility over 46%.
View Article and Find Full Text PDFEpsilon-near-zero (ENZ) materials, i.e., materials with a vanishing real part of the permittivity, have become an increasingly desirable platform for exploring linear and nonlinear optical phenomena in nanophotonic and on-chip environments.
View Article and Find Full Text PDFBilayer electrified-membrane with pair-atom tin catalysts for near-complete conversion of low concentration nitrate to dinitrogen.
Nat Commun
January 2025
Department of Chemical and Environmental Engineering, Yale University, New Haven, CT, USA.
Discharge of wastewater containing nitrate (NO) disrupts aquatic ecosystems even at low concentrations. However, selective and rapid reduction of NO at low concentration to dinitrogen (N) is technically challenging. Here, we present an electrified membrane (EM) loaded with Sn pair-atom catalysts for highly efficient NO reduction to N in a single-pass electrofiltration.
View Article and Find Full Text PDF[The intestinal microbiota in inflammatory bowel diseases].
Inn Med (Heidelb)
January 2025
Lehrstuhl für Ernährung und Immunologie, School of Life Sciences, Technische Universität München, Gregor-Mendel-Straße 2, 85354, Freising, Deutschland.
Background: The intestinal microbiota comprises all living microorganisms in the gastrointestinal tract and is crucial for its function. Clinical observations and laboratory findings confirm a central role of the microbiota in chronic inflammatory bowel diseases (IBD). However, many mechanistic details remain unclear.
View Article and Find Full Text PDFRinging suppression design for pulse parameter controllable transcranial magnetic stimulation.
J Neural Eng
January 2025
Huazhong University of Science and Technology Wuhan National High Magnetic Field Center, No.1037, Luoyu Road, Wuhan, Hubei, 430074, CHINA.
Objective: Pulse parameter controllable transcranial magnetic stimulation (cTMS) devices with fully-controlled semiconductor switches are increasingly being developed, but the primary waveform they generate is often accompanied by ringing, which is due to the resonance between the stimulation coil inductance and the snubber capacitors paired with the switches at the end of the pulse. This study provides a ringing suppression design method to effectively suppress it and reduce its impact on stimulation efficacy.
Methods: A three-pronged design method is developed to suppress the ringing at its source.
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