Explanipedia

Millimetre-Wave Comb Generated by an Optical Microcomb Open

Luke Peters, Antonio Cutrona, Andrew Cooper, Luana Olivieri, F. Getman , et al. · 2025

Metrological-grade millimetre wave baseband comb sources covering the subterahertz window are a key building block for next-generation wireless communications, precision sensing, and positioning systems. While optical microcombs have set n…

Diode-pumped wavelength-switchable quasi-three-level Nd:LiLuF4 laser on the 4F3/2→4I9/2 transition Open

Sai T. Chu, Nguyen Xuan Anh, Yuzhao Li · 2025

We first demonstrate a continuous-wave (CW) wavelength-switchable quasi-three-level Nd:LiLuF 4 laser operating at 4 F 3/2 → 4 I 9/2 transition. By shifting the pump beam waist location in the Nd:LLF, switching between single-wavelength (SW…

TOPS‐Speed Reconfigurable Photonic Transposed Convolution Accelerator for Generative Tasks Open

Chan Xia, Shifan Chen, Yifu Xu, Yunping Bai, Xiaotian Zhu , et al. · 2025

Transposed convolution, crucial in large‐parameter generative models ranging from content creation to autonomous driving, imposes substantial demands on GPU memory and energy consumption in electronic processors. Electronic processors, fun…

Dual-pumping supercontinuum generation and temporal reflection in a nonlinear photonic integrated circuit Open

charbel khallouf, Lynn Sader, Alexis Bougaud, G. Fanjoux, Brent E. Little , et al. · 2025

Orthogonally polarized dual-wavelength Nd:LaMgAl11O19/Nd:SrAl12O19 laser at 1297 and 1306 nm with adjustable ratio of output powers Open

Sai T. Chu, Xinghua Yang, Yuzhao Li · 2025

Using tunable in-band laser diode (LD) pumping (791.1–798.2 nm), an orthogonally polarized dual-wavelength (OPDW) Nd:LaMgAl 11 O 19 /Nd:SrAl 12 O 19 (Nd:LMA/Nd:SA) operation at 1297 nm and 1306 nm for the 4 F 3/2 → 4 I 13/2 transition is d…

Use of MRI-double inversion recovery sequence for early diagnosis of multiple sclerosis: case series Open

Dan Zhu, Y. Shao, Nana Zhang, Zhourui Wu, Liming Cheng , et al. · 2025

Well-Posedness of the Fisher–KPP Equation with Neumann, Dirichlet, and Robin Boundary Conditions on the Real Half Line Open

Sai T. Chu, Woldegebriel Assefa Woldegerima · 2025

We consider the Fisher–KPP equation with Neumann boundary conditions on the real half line. We claim that the Fisher-KPP equation with Neumann boundary conditions is well-posed only for odd positive stationary solutions. We begin by provin…

Cross dual-microcomb dispersion interferometry ranging Open

Yang Wang, Jindong Wang, Jingsheng Huang, Weiqiang Wang, Long Huang , et al. · 2025

Soliton microcombs offer unprecedented laser sources for high-precision ranging due to their merits of high repetition rate, excellent coherence, and compact size. However, high repetition rate limits the nonambiguity range (NAR) of rangin…

Ultra-broadband photon pair generation on CMOS-compatible chip Open

Yushi Hamayama, Kenta Sugiura, H. Gotoh, D. Nakamura, Xiaotian Zhu , et al. · 2025

Frequency-entangled photon pairs play a vital role in various quantum technologies, including quantum computing, quantum communication, and quantum sensing. Broadening the bandwidth of frequency-entangled photon pairs enhances the performa…

Recent Advancements in Optical Fiber Sensors for Non-Invasive Arterial Pulse Waveform Monitoring Applications: A Review Open

Jing Wen Chew, Soon Xin Gan, Jingxian Cui, Wen Di Chan, Sai T. Chu , et al. · 2025

The awareness of the importance of monitoring human vital signs has increased recently due to the outbreak of the COVID-19 pandemic. Non-invasive heart rate monitoring devices, in particular, have become some of the most popular tools for …

Leveraging Machine Learning and a Photonic Integrated Chip for the Spectro-Temporal Tailoring of Supercontinuum Generation Open

Bruno P. Chaves, Jérémy Saucourt, Van Thuy Hoang, Alexis Bougaud, Brent E. Little , et al. · 2025

International audience

Harnessing Electro-Optic Modulation and On-Chip Temporal Interleaving Towards Versatile Frequency Comb Generation Open

Manal Arbati, Ambrine Bougaud, Bruno P. Chaves, Thomas Bunel, Sébastien Février , et al. · 2025

International audience

Precision LIDAR Using Dual‐Comb Breathing Spectra Open

Jingsheng Huang, Jindong Wang, Yang Wang, Wei Du, Weiqiang Wang , et al. · 2025

Light detection and ranging (Lidar) is indispensable in a variety of fields, encompassing basic science, manufacturing, production, and daily life. Here, from a different perspective, A phenomenon is observed occurring between the optical …

Exploiting Nonlocal Correlations for Dispersion-Resilient Quantum Communications Open

Hao Yu, Benjamin Crockett, Nicola Montaut, Stefania Sciara, Mario Chemnitz , et al. · 2025

Encoding quantum information via time-bin entangled states has had a profound impact on the development of quantum communications. However, dispersive propagation limits their achievable transmission distances. Here we describe a regime fo…

Topological Quenching of Noise in a Free-Running Moebius Microcomb Open

Debayan Das, Antonio Cutrona, Andrew Cooper, Luana Olivieri, A. G. Balanov , et al. · 2025

Microcombs require ultralow-noise repetition rates to enable next-generation applications in metrology, high-speed communications, microwave photonics, and sensing. Regardless of the stabilisation method, spectral purity ultimately depends…

Dual-pumping supercontinuum generation and temporal reflection in a nonlinear photonic integrated circuit Open

charbel khallouf, Lynn Sader, Alexis Bougaud, G. Fanjoux, Brent E. Little , et al. · 2025

We report on the first demonstration of on-chip supercontinuum generation through dual-wavelength pumping of a nonlinear photonic integrated circuit, fabricated from high-index doped silica glass. In addition to the bandwidth enhancement t…

Dual-pumping supercontinuum generation and temporal reflection in a nonlinear photonic integrated circuit Open

charbel khallouf, Lynn Sader, Alexis Bougaud, G. Fanjoux, Brent E. Little , et al. · 2025

We report on the first demonstration of on-chip supercontinuum generation through dual-wavelength pumping of a nonlinear photonic integrated circuit, fabricated from high-index doped silica glass. In addition to the bandwidth enhancement t…

Turnkey Deterministic Soliton Crystal Generation Open

Xinyu Yang, Xiaotian Zhu, Caitlin E. Murray, Chawaphon Prayoonyong, Xingyuan Xu , et al. · 2025

The deterministic generation of robust soliton combs is of great importance for the applications of optical frequency combs. As a novel form of microcomb, soliton crystals (SCs) have been shown to have advantages of easy generation, high c…

Response of Spring Phenology to Pre-Seasonal Diurnal Warming in Deciduous Broad-Leaved Forests of Northern China Open

Shaodong Huang, Sai T. Chu, Qianwen Kang, Yujie Li, Yuying Liang , et al. · 2025

Preseason temperature has always been considered the most critical factor influencing vegetation phenology in the northern hemisphere. While numerous studies have examined the impact of daytime and nighttime warming on vegetation phenology…

Orthogonally polarized dual-wavelength operation at 898 and 904 nm with tunable power ratio in Nd:SA/Nd:LMA crystals Open

Sai T. Chu, Xinghua Yang, Shuang Wang, Changli Li, Yongliang Li · 2025

A diode-pumped continuous-wave (CW) orthogonally polarized dual-wavelength (OPDW) Nd:SrAl₁₂O₁₉/Nd:LaMgAl₁₁O₁₉ (Nd:SA/Nd:LMA) laser at 898 and 904 nm with tunable power ratio on ⁴F_…

Visible Phase‐Locked Microcombs Generation in High‐Index Doped Silica Glass Micro‐Ring Resonators Open

Yuhua Li, Yuan Yao, Guangkuo Li, Xiaotian Zhu, Xiang Wang , et al. · 2025

The development of integrated microcomb in the visible light region attracts considerable interest due to their potential applications ranging from bioimaging to quantum systems. However, apart from the handful of reports of phase‐locked m…

Multi-channel Hong–Ou–Mandle interference between independent comb-based weak coherent pulses Open

Long Huang, Liang Tang, Yang Wang, Minhui Cheng, Brent E. Little , et al. · 2025

With the widespread application of quantum communication technology, there is an urgent need to enhance unconditionally secure key rates and capacity. Measurement-device-independent quantum key distribution (MDI-QKD), proven to be immune t…

Quantum key distribution implemented with d-level time-bin entangled photons Open

Hao Yu, Stefania Sciara, Mario Chemnitz, Nicola Montaut, Benjamin Crockett , et al. · 2025

High-dimensional photon states (qudits) are pivotal to enhance the information capacity, noise robustness, and data rates of quantum communications. Time-bin entangled qudits are promising candidates for implementing high-dimensional quant…

TOPS-speed complex-valued convolutional accelerator for feature extraction and inference Open

Yunping Bai, Yifu Xu, Shifan Chen, Xiaotian Zhu, Shuai Wang , et al. · 2025

Salivary cortisol detection by novel hollow AgAu nanoislands plasmonic-based sensor Open

Wen Di Chan, Jing Wen Chew, Chi-Yen Lai, Kelvin Chow, Sai T. Chu · 2025

Method of Multi-View 3d Reconstruction of Coarse Aggregates Using Advanced Spatial Splicing Technique of Machine Vision Open

Sai T. Chu, Ya Wei · 2025

High Harmonic Generation in Integrated Nonlinear Platforms Open

Yuhua Li, Shao Hao Wang, Brent E. Little, Sai T. Chu · 2025

Supercontinuum generation in high-index doped silica photonic integrated circuits under diverse pumping settings Open

charbel khallouf, Van Thuy Hoang, Gil Fanjoux, Brent E. Little, Sai T. Chu , et al. · 2024

Recent advances in supercontinuum light generation have been remarkable, particularly in the context of highly nonlinear photonic integrated waveguides. In this study, we thoroughly investigate supercontinuum (SC) generation in high-index …

Review of Optical Fiber Optofluidic Chemical Sensors and Biosensors Open

Shuai Gao, Xinyu Yang, Shengjia Wang, Sai T. Chu, Pingping Teng , et al. · 2024

Optical fiber sensors have gained significant attention in recent years owing to their remarkable advantages of remote operation and rapid response. The integration of optical fiber sensing with the microfluidics technology has paved the w…

Advances in Soliton Crystal Microcombs Open

Zhihui Liu, Haoran Zhang, Yuhang Song, Xiaotian Zhu, Caitlin E. Murray , et al. · 2024

Soliton crystal microcombs, as a new type of Kerr frequency comb, offer advantages such as higher energy conversion efficiency and a simpler generation mechanism compared to those of traditional soliton microcombs. They have a wide range o…

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