Results 31 to 40 of about 32,096 (262)

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

Polarization‐resolved femtosecond Vis/IR spectroscopy tailored for resolving weak signals in biological samples using minimal sample volume

FEBS Open Bio, EarlyView.
Unique biological samples, such as site‐specific mutant proteins, are available only in limited quantities. Here, we present a polarization‐resolved transient infrared spectroscopy setup with referencing to improve signal‐to‐noise tailored towards tracing small signals. We provide an overview of characterizing the excitation conditions for polarization‐
Clark Zahn, Karsten Heyne
wiley   +1 more source

A Multi-Pass Optically Pumped Rubidium Atomic Magnetometer with Free Induction Decay

Sensors, 2022
A free-induction-decay (FID) type optically-pumped rubidium atomic magnetometer driven by a radio-frequency (RF) magnetic field is presented in this paper.
Lulu Zhang, Yongbiao Yang, Ni Zhao, Jun He, Junmin Wang   +4 more
doaj   +1 more source

A light‐triggered Time‐Resolved X‐ray Solution Scattering (TR‐XSS) workflow with application to protein conformational dynamics

FEBS Open Bio, EarlyView.
Time‐resolved X‐ray solution scattering captures how proteins change shape in real time under near‐native conditions. This article presents a practical workflow for light‐triggered TR‐XSS experiments, from data collection to structural refinement. Using a calcium‐transporting membrane protein as an example, the approach can be broadly applied to study ...
Fatemeh Sabzian‐Molaei, Fredrik Orädd, Konstantinos Magkakis, Magnus Andersson   +3 more
wiley   +1 more source

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

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

Analysing the significance of small conformational changes and low occupancy states in serial crystallographic data

FEBS Open Bio, EarlyView.
This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill, Yelyzaveta Pulnova, Elke De Zitter, Helen M. Ginn, Briony A. Yorke   +4 more
wiley   +1 more source

Strategies for achieving high key rates in satellite-based QKD

npj Quantum Information, 2021
Quantum key distribution (QKD) is a pioneering quantum technology on the brink of widespread deployment. Nevertheless, the distribution of secret keys beyond a few 100 km at practical rates remains a major challenge.
Sebastian Ecker, Bo Liu, Johannes Handsteiner, Matthias Fink, Dominik Rauch, Fabian Steinlechner, Thomas Scheidl, Anton Zeilinger, Rupert Ursin   +8 more
doaj   +1 more source

Introduction to Quantum Optics

, 2022
Lecture notes and exercise sheets for my quantum optics course, available at https://www.youtube.com ...
openaire   +3 more sources