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We investigate the capabilities of loss-tolerant quantum state characterization using a photon-number resolving, time-multiplexed detector (TMD). We employ the idea of probing the Wigner function point-by-point in phase space via photon…

量子物理 · 物理学 2009-11-13 K Laiho , M Avenhaus , K N Cassemiro , Ch Silberhorn

We report on the realization of scalable single-photon sources (SPSs) based on single site-controlled quantum dots (SCQDs) and deterministically fabricated microlenses. The fabrication process comprises the buried-stressor growth technique…

介观与纳米尺度物理 · 物理学 2018-01-17 Arsenty Kaganskiy , Sarah Fischbach , Andre Strittmatter , Tobias Heindel , Sven Rodt , Stephan Reitzenstein

Optical aerial images change detection is an important task in earth observation and has been extensively investigated in the past few decades. Generally, the supervised change detection methods with superior performance require a large…

计算机视觉与模式识别 · 计算机科学 2020-10-23 Yuan Zhou , Xiangrui Li

Reabsorption, the multiple scattering of spontaneously emitted photons in optically thick gases, is a major limitation to efficient optical pumping and laser cooling in ultracold gases. We report mitigation of reabsorption using spatial and…

Single-pixel imaging is suitable for low light level scenarios because a bucket detector is employed to maximally collect the light from an object. However, one of the challenges is its slow imaging speed, mainly due to the slow light…

仪器与探测器 · 物理学 2019-10-02 Weigang Zhao , Hui Chen , Yuan Yuan , Huaibin Zheng , Jianbin Liu , Yu Zhou , Jianbin Liu , Zhuo Xu

Superconducting nanowire single-photon detectors (SNSPDs) have emerged as essential devices that push the boundaries of photon detection with unprecedented sensitivity, ultrahigh timing precision, and broad spectral response. Recent…

量子物理 · 物理学 2025-06-02 Jun Gao , Jin Chang , Bruno Lopez Rodriguez , Iman Esmaeil Zadeh , Val Zwiller , Ali W. Elshaari

Developing a differentially private deep learning algorithm is challenging, due to the difficulty in analyzing the sensitivity of objective functions that are typically used to train deep neural networks. Many existing methods resort to the…

机器学习 · 计算机科学 2019-10-16 Frederik Harder , Jonas Köhler , Max Welling , Mijung Park

Photodetector based on two-dimensional (2D) materials is an ongoing quest in optoelectronics. These 2D photodetectors are generally efficient at low illuminating power but suffer severe recombination processes at high power, which results…

In optical quantum information processing with continuous variables, optical non-Gaussian quantum states are essential for universal and fault-tolerant quantum computation. Experimentally, their most typical generation method is photon…

A new semi-supervised ensemble algorithm called XGBOD (Extreme Gradient Boosting Outlier Detection) is proposed, described and demonstrated for the enhanced detection of outliers from normal observations in various practical datasets. The…

机器学习 · 计算机科学 2020-09-22 Yue Zhao , Maciej K. Hryniewicki

The Vera C. Rubin Observatory Wide-Fast Deep (WFD) sky survey will reach unprecedented surface brightness depths over tens of thousands of square degrees. Surface brightness photometry has traditionally been a challenge. Current algorithms…

天体物理仪器与方法 · 物理学 2023-01-25 Lee S. Kelvin , Imran Hasan , J. Anthony Tyson

The ill-posed problem of phase retrieval in optics, using one or more intensity measurements, has a multitude of applications using electromagnetic or matter waves. Many phase retrieval algorithms are computed on pixel arrays using discrete…

图像与视频处理 · 电气工程与系统科学 2022-09-21 J. A. Pollock , K. S. Morgan , L. C. P. Croton , M. K. Croughan , G. Ruben , N. Yagi , H. Sekiguchi , M. J. Kitchen

State-of-the-art training algorithms for deep learning models are based on stochastic gradient descent (SGD). Recently, many variations have been explored: perturbing parameters for better accuracy (such as in Extragradient), limiting SGD…

机器学习 · 计算机科学 2022-03-23 Amirkeivan Mohtashami , Martin Jaggi , Sebastian U. Stich

Deflation is an efficient numerical technique for identifying new branches of steady state solutions to nonlinear partial differential equations. Here, we demonstrate how to extend deflation to discover new periodic orbits in nonlinear…

斑图形成与孤子 · 物理学 2023-05-30 F. Martin-Vergara , J. Cuevas-Maraver , P. E. Farrell , F. R. Villatoro , P. G. Kevrekidis

Learning in data-scarce settings has recently gained significant attention in the research community. Semi-supervised object detection(SSOD) aims to improve detection performance by leveraging a large number of unlabeled images alongside a…

计算机视觉与模式识别 · 计算机科学 2026-01-30 Chaoxin Wang , Bharaneeshwar Balasubramaniyam , Anurag Sangem , Nicolais Guevara , Doina Caragea

Squeezed states of light have been improving the sensitivity of gravitational-wave observatories and are nonclassical resources of quantum cryptography and envisioned photonic quantum computers. The higher the squeeze factor is, the higher…

量子物理 · 物理学 2023-01-11 Stephan Grebien , Julian Goettsch , Boris Hage , Jaromir Fiurasek , Roman Schnabel

Single-photon sensitive detectors like Silicon Photomultipliers are widely used in many medical imaging applications. By using detectors with position resolutions, it is possible to build compact photodetector readouts with reduced number…

Surveillance based on Computer Vision has become a major necessity in current era. Most of the surveillance systems operate on visible light imaging, but performance based on visible light imaging is limited due to some factors like…

计算机视觉与模式识别 · 计算机科学 2017-09-28 Yash Khandhediya , Karishma Sav , Vandit Gajjar

We present a general scheme to derive lattice differential operators from the discrete velocities and associated Maxwell-Boltzmann distributions used in lattice hydrodynamics. Such discretizations offer built-in isotropy and recursive…

计算物理 · 物理学 2012-08-07 Rashmi Ramadugu , Sumesh P. Thampi , Ronojoy Adhikari , Sauro Succi , Santosh Ansumali

We have studied theoretical un-symmetric multi-photon subtracted twin beam state and demonstrated a method for generating states that resembles to high photon number states with the increase in the number of subtracted photons through…

量子物理 · 物理学 2021-10-05 N. Samantaray , J. C. F. Matthews , J. G. Rarity