English
Related papers

Related papers: A High-Contrast Bragg Atom Interferometer for Test…

200 papers

Long-tailed semi-supervised learning poses a significant challenge in training models with limited labeled data exhibiting a long-tailed label distribution. Current state-of-the-art LTSSL approaches heavily rely on high-quality…

Machine Learning · Computer Science 2024-10-10 Zi-Hao Zhou , Siyuan Fang , Zi-Jing Zhou , Tong Wei , Yuanyu Wan , Min-Ling Zhang

A quantum wavemetry scheme based on the coherence de Broglie wavelength (CBW) is proposed using an M coupled Mach Zehnder interferometer (MZI) architecture to achieve superresolution sensing and metrology. Although CBW does not attain the…

Quantum Physics · Physics 2026-03-09 B. S. Ham

Measurement modalities in Bragg coherent diffraction imaging (BCDI) rely on finding signal from a single nanoscale crystal object, which satisfies the Bragg condition among a large number of arbitrarily oriented nanocrystals. However, even…

Atom interferometers are reaching sensitivities fundamentally constrained by quantum fluctuations. A main challenge is to integrate entanglement into quantum sensing protocols to enhance precision while ensuring robustness against noise and…

The mid-term fractional frequency stability of miniaturized atomic clocks can be limited by light-shift effects. In this Letter, we demonstrate the implementation of a symmetric Auto-Balanced Ramsey (SABR) interrogation sequence in a…

Atomic Physics · Physics 2022-02-23 M. Abdel Hafiz , C. Carlé , N. Passilly , J. M. Danet , C. E. Calosso , R. Boudot

Anatomical landmark detection in medical images is essential for various clinical and research applications, including disease diagnosis and surgical planning. However, manual landmark annotation is time-consuming and requires significant…

Image and Video Processing · Electrical Eng. & Systems 2025-07-22 Soorena Salari , Arash Harirpoush , Hassan Rivaz , Yiming Xiao

Bragg diffraction has been used in atom interferometers because it allows signal enhancement through multiphoton momentum transfer and suppression of systematics by not changing the internal state of atoms. Its multi-port nature, however,…

Atomic Physics · Physics 2016-11-21 Richard H Parker , Chenghui Yu , Brian Estey , Weicheng Zhong , Eric Huang , Holger Müller

This work presents new experimental results on low-temperature (LT) characterization of local rf properties of passive superconducting (SC) microwave devices using a novel Laser Scanning Microscope (LSM). In this technique, a modulated…

Superconductivity · Physics 2016-11-18 A. P. Zhuravel , A. V. Ustinov , D. Abraimov , Steven M. Anlage

Contact line friction (CLF) of bubbles is ubiquitous, from bubbles on a beer glass to H2 bubbles sliding over electrodes in electrolysis. However, a fundamental understanding of CLF of bubbles is still missing, mainly due to the challenge…

In the new perspective of spatial quantization, this article systematically studies the advantages of reconfigurable reflectarray (RRA) designed with closely spaced elements in terms of sidelobe level (SLL), scanning accuracy and scan loss,…

Applied Physics · Physics 2025-02-03 Xiaocun Zong , Fan Yang , Shenheng Xu , Maokun Li

This paper studies learning fair encoders in a self-supervised learning (SSL) setting, in which all data are unlabeled and only a small portion of them are annotated with sensitive attribute. Adversarial fair representation learning is well…

Machine Learning · Computer Science 2024-06-11 Qi Qi , Quanqi Hu , Qihang Lin , Tianbao Yang

Contrastive learning (CL) approaches have gained great recognition as a very successful subset of self-supervised learning (SSL) methods. SSL enables learning from unlabeled data, a crucial step in the advancement of deep learning,…

Computer Vision and Pattern Recognition · Computer Science 2025-04-29 Mohamed Hassan , Mohammad Wasil , Sebastian Houben

Semi-supervised Learning (SSL) reduces the need for extensive annotations in deep learning, but the more realistic challenge of imbalanced data distribution in SSL remains largely unexplored. In Class Imbalanced Semi-supervised Learning…

Computer Vision and Pattern Recognition · Computer Science 2024-07-15 Qianhan Feng , Lujing Xie , Shijie Fang , Tong Lin

Interferometers play a crucial role in high-precision displacement measurement such as gravitational-wave detection. Conventional interferometer designs require accurate laser alignment, including the laser pointing and the waist position,…

Instrumentation and Detectors · Physics 2024-01-05 Xiang Lin , Peng Qiu , Yurong Liang , Xiaofang Ren , Hao Yan , Zebing Zhou

We propose a novel contrastive learning framework to effectively address the challenges of data heterogeneity in federated learning. We first analyze the inconsistency of gradient updates across clients during local training and establish…

Machine Learning · Computer Science 2024-06-03 Seonguk Seo , Jinkyu Kim , Geeho Kim , Bohyung Han

We report on a traceable calibration system for a 3500mm-long console that carries a measurement system for inspecting the diameter of a circular reactor chassis. The system uses two single-pass laser interferometers with homodyne fringe…

Instrumentation and Detectors · Physics 2019-05-03 Simon Rerucha , Bretislav Mikel , Zdenek Matej , Ondrej Herman , Miroslava Hola , Michal Jelinek , Petr Jedlicka , Ondrej Cip , Josef Lazar

Image processing algorithms are finding various applications in manufacturing and materials industries such as identification of cracks in the fabricated samples, calculating the geometrical properties of the given microstructure, presence…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Akshansh Mishra

Damped Lyman-$\alpha$ Absorber(DLA) of HI 21cm system is an ideal probe to directly measure cosmic acceleration in real-time cosmology via Sandage-Loeb(SL) test. During short observations toward two DLAs in the commissioning progress of…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-31 Chang-Zhi Lu , Kang Jiao , Tingting Zhang , Tong-Jie Zhang , Ming Zhu

We investigate the question whether Michelson type interferometry is possible if the role of the beam splitter is played by a spontaneous process. This question arises from an inspection of trajectories of atoms bouncing inelastically from…

Quantum Physics · Physics 2007-05-23 R. A. Cornelussen , R. J. C. Spreeuw , H. B. van Linden van den Heuvell

Collapse models constitute an alternative to quantum mechanics that solve the well-know quantum measurement problem. In this framework, a novel approach to include dissipation in collapse models has been recently proposed, and awaits…

Quantum Physics · Physics 2024-04-15 Giovanni Di Bartolomeo , Matteo Carlesso