Results 31 to 40 of about 275,136 (297)

Measurement of Stokes-operator squeezing for continuous-variable orbital angular momentum

Scientific Reports, 2017
We demonstrate experimentally a measurement scheme for the Stokes operators for the continuous-variable squeezed states of orbital angular momentum (OAM).
Jun Guo, Chunxiao Cai, Long Ma, Kui Liu, Hengxin Sun, Jiangrui Gao   +5 more
doaj   +1 more source

Laser Spatial Coherence Suppression With Refractive Optical Elements Toward the Improvement of Speckle Reduction by Light Pipes

IEEE Access, 2019
We study laser speckle reduction by light pipes, and we propose a new method to improve its efficiency. Proof-of-concept refractive optical elements (ROEs) with a staircase-like structure are introduced before a holographic diffuser to split a laser beam
Zhaomin Tong, Changyuan Sun, Yifei Ma, Mei Wang, Suotang Jia, Xuyuan Chen   +5 more
doaj   +1 more source

Lifetime Measurement of Cesium Atoms Using a Cold Rydberg Gas

Applied Sciences, 2022
The lifetimes of nS1/2 and nD5/2 (n = 60–83) cesium Rydberg states are measured accurately in a magneto-optical trap using the field ionization technique and analyzed with the existing theoretical model. The room temperature blackbody radiation (BBR) and
Rong Song, Jingxu Bai, Yuechun Jiao, Jianming Zhao, Suotang Jia   +4 more
doaj   +1 more source

Positive P simulations of spin squeezing in a two-component Bose condensate [PDF]

, 2001
The collisional interaction in a Bose condensate represents a non-linearity which in analogy with non-linear optics gives rise to unique quantum features. In this paper we apply a Monte Carlo method based on the positive P pseudo-probability distribution
A. Kuzmich, A. Kuzmich, A. Kuzmich, A. Sørensen, A. Sørensen, A.E. Kozhekin, C. Fabre, C. W. Gardiner, C.J. Myatt, D.J. Wineland, D.S. Hall, E.V. Goldstein, H. Pu, J. Hald, K. Mølmer, K. Mølmer, Klaus Mølmer, M. Kitagawa, U.V. Poulsen, Uffe V. Poulsen, Y. Castin   +20 more
core   +2 more sources

Trace Nickel Activated Biphasic Core‐CuOii/Shell‐CuOi Secondary Microspheres Enable Room Temperature Parts‐Per‐Trillion‐Level NO2 Detection

Advanced Engineering Materials, EarlyView.
An idea of designing novel sensors is proposed by creating appropriate Schottky barriers and vacancies between isomorphous Core‐CuOii/ Shell‐CuOi secondary microspheres and enhancing catalytic and spill‐over effects, and electronegativity via spontaneous biphasic separation, self‐assembly, and trace‐Ni‐doping.
Bala Ismail Adamu, Peipei Chen, Shafia Mukhtar Ibrahim, Mukhtar Lawan Adam, Attia Falak, Mokhotjwa Simon Dhlamini, Hanfu Wang, Lingxiang Jiang, Weiguo Chu   +8 more
wiley   +1 more source

Experimental demonstration of multiparty quantum secret sharing and conference key agreement

npj Quantum Information, 2023
Quantum secret sharing (QSS) and conference key agreement (CKA) provide efficient encryption approaches for realizing multi-party secure communication, which are essential components of quantum networks. In this work, a practical, scalable, verifiable (k,
Shuaishuai Liu, Zhenguo Lu, Pu Wang, Yan Tian, Xuyang Wang, Yongmin Li   +5 more
doaj   +1 more source

Microfiber optomechanical torsion sensor

Frontiers in Physics, 2023
In this paper, we propose and demonstrate experimentally an optomechanical torsion sensor using a microfiber mechanical resonator. The torsion angle could be obtained by monitoring the resonant frequency shifts of the microfiber resonator.
Qiang Zhang, Qiang Zhang, Jie Zhang, Shiwei Yang, Ruili Zhai, Yuyang Xie, Yongmin Li, Yongmin Li   +7 more
doaj   +1 more source

Continuous phase-space representations for finite-dimensional quantum states and their tomography

, 2019
Continuous phase spaces have become a powerful tool for describing, analyzing, and tomographically reconstructing quantum states in quantum optics and beyond. A plethora of these phase-space techniques are known, however a thorough understanding of their
Glaser, Steffen J., Koczor, Bálint, Zeier, Robert   +2 more
core   +1 more source

Recent Advancements in Bulk Processing of Rare‐Earth‐Free Hard Magnetic Materials and Related Multiscale Simulations

Advanced Engineering Materials, EarlyView.
This article provides an overview of recent advancements in bulk processing of rare‐earth‐free hard magnetic materials. It also addresses related simulation approaches at different scales. The research on rare‐earth‐free magnetic materials has increased significantly in recent years, driven by supply chain issues, environmental and social concerns, and
Daniel Scheiber, Andrea Bachmaier
wiley   +1 more source

Performance Improvement of Single-Frequency CW Laser Using a Temperature Controller Based on Machine Learning

Micromachines, 2022
The performance improvement of an all-solid-state single-frequency continuous-wave (CW) laser with high output power is presented in this paper, which is implemented by employing a temperature control system based on machine learning to control the ...
Haoming Qiao, Weina Peng, Pixian Jin, Jing Su, Huadong Lu   +4 more
doaj   +1 more source