Results 41 to 50 of about 45,670 (293)

Multiple pathway quantum beat spectroscopy

Frontiers in Physics, 2022
We investigate quantum beats by monitoring cooperative emission from rubidium vapor and demonstrate correlated beats via coupled emission channels. We develop a theoretical model, and our simulations are in good agreement with experimental results.
Zhenhuan Yi, Tuguldur Kh. Begzjav, Tuguldur Kh. Begzjav, Gombojav O. Ariunbold, Gombojav O. Ariunbold, Aleksei M. Zheltikov, Alexei V. Sokolov, Alexei V. Sokolov, Marlan O. Scully, Marlan O. Scully, Marlan O. Scully   +10 more
doaj   +1 more source

Cooperative spontaneous emission as a many-body eigenvalue problem [PDF]

Physical Review A, 2008
5 pages, 3 figures, to appear in Physical Review ...
Svidzinsky, Anatoly, Chang, Jun-Tao
openaire   +2 more sources

Cooperative Decay of an Ensemble of Atoms in a One-Dimensional Chain with a Single Excitation

Atoms
We propose a new expression of the cooperative decay rate of a one-dimensional chain of N two-level atoms in the single-excitation configuration. From it, the interference nature of superradiance and subradiance arises naturally, without the need to ...
Nicola Piovella
doaj   +1 more source

Cooperative torus mode emission of O-ring lasers

AIP Advances, 2020
Deformable ring lasers were fabricated by dispersing fluorescent dye (rhodamine 6G) in silicone rubber rings, i.e., the so-called O-rings. When excited with a pulsed green laser, an O-ring of 750 µm diameter exhibited a stimulated emission with a ...
Mitsunori Saito, Atsushi Kubota, Ryohei Yagi   +2 more
doaj   +1 more source

Enhanced robustness and dimensional crossover of superradiance in cuboidal nanocrystal superlattices

Physical Review Research, 2023
Cooperative emission of coherent radiation from multiple emitters (known as superradiance) has been predicted and observed in various physical systems, most recently in CsPbBr_{3} nanocrystal superlattices. Superradiant emission is coherent and occurs on
Sushrut Ghonge, David Engel, Francesco Mattiotti, G. Luca Celardo, Masaru Kuno, Boldizsár Jankó   +5 more
doaj   +1 more source

Hydrogen peroxide serves as pivotal fountainhead for aerosol aqueous sulfate formation from a global perspective

Nature Communications
Traditional atmospheric chemistry posits that sulfur dioxide (SO2) can be oxidized to sulfate (SO4 2–) through aqueous-phase reactions in clouds and gas-phase oxidation.
Jie Gao, Haoqi Wang, Wenqi Liu, Han Xu, Yuting Wei, Xiao Tian, Yinchang Feng, Shaojie Song, Guoliang Shi   +8 more
doaj   +1 more source

Subradiant Decay in 2D and 3D Atomic Arrays

Photonics
Subradiance is a phenomenon where coupled emitters radiate light at a slower rate than independent ones. While its observation was first reported in disordered cold atom clouds, ordered subwavelength arrays of emitters have emerged as promising platforms
Nicola Piovella, Romain Bachelard
doaj   +1 more source

Structural instability impairs function of the UDP‐xylose synthase 1 Ile181Asn variant associated with short‐stature genetic syndrome in humans

FEBS Letters, EarlyView.
The Ile181Asn variant of human UDP‐xylose synthase (hUXS1), associated with a short‐stature genetic syndrome, has previously been reported as inactive. Our findings demonstrate that Ile181Asn‐hUXS1 retains catalytic activity similar to the wild‐type but exhibits reduced stability, a looser oligomeric state, and an increased tendency to precipitate ...
Tuo Li, Pedro A. Sánchez‐Murcia, Bernd Nidetzky   +2 more
wiley   +1 more source

An unexpected alternative viologen electron mediator site in tungsten‐containing formate dehydrogenase

FEBS Letters, EarlyView.
An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
wiley   +1 more source

Characterizing the emission trends and pollution evolution patterns during the transition period following COVID-19 at an industrial megacity of central China

Ecotoxicology and Environmental Safety
After the resumption of work and production following the COVID-19 pandemic, many cities entered a “transition phase”, characterized by the gradual recovery of emission levels from various sources.
Yafei Li, Lu Yao, Jingyi Yang, Jianhui Wu, Xiao Tang, Shengwen Liang, Yufen Zhang, Yinchang Feng   +7 more
doaj   +1 more source