Results 11 to 20 of about 226,086 (279)

Benchmarking Current Capabilities for the Generation of Excitation and Photoionisation Atomic Data

open access: yesGalaxies, 2018
The spectra currently emerging from modern ground- and space-based astronomical instruments are of exceptionally high quality and resolution. To meaningfully analyse these spectra, researchers utilise complex modelling codes to replicate the observations.
Catherine Ramsbottom   +6 more
doaj   +1 more source

Macroscopic quantumness of optically conditioned mechanical systems

open access: yesNew Journal of Physics, 2020
We address the macroscopic quantumness of the state of mechanical systems subjected to conditional protocols devised for state engineering in cavity optomechanics. We use a measure of macroscopicity based on phase-space methods.
Hannah McAleese, Mauro Paternostro
doaj   +1 more source

Complex Attosecond Waveform Synthesis at FEL FERMI

open access: yesApplied Sciences, 2021
Free-electron lasers (FELs) can produce radiation in the short wavelength range extending from the extreme ultraviolet (XUV) to the X-rays with a few to a few tens of femtoseconds pulse duration. These facilities have enabled significant breakthroughs in
Praveen Kumar Maroju   +35 more
doaj   +1 more source

Estimating the Level of Uncertainty in Electron-Impact Excitation and Photoionisation Rates of Low-Ionised Stages of Ni Ions

open access: yesGalaxies, 2018
Ni iv lines can be used as diagnostics for temperature and density for various astrophysical objects. In addition, ionization of Ni2+ is one of the causes of the opacity in the interstellar medium.
Luis Fernández-Menchero   +2 more
doaj   +1 more source

Thermodynamics of trajectories and local fluctuation theorems for harmonic quantum networks

open access: yesNew Journal of Physics, 2015
We present a general method to undertake a thorough analysis of the thermodynamics of the quantum jump trajectories followed by an arbitrary quantum harmonic network undergoing linear and bilinear dynamics.
Simon Pigeon   +4 more
doaj   +1 more source

Towards the Provision of Accurate Atomic Data for Neutral Iron

open access: yesGalaxies, 2018
The rich emission and absorption line spectra of Fe I may be used to extract crucial information on astrophysical plasmas, such as stellar metallicities.
Andrew Conroy   +3 more
doaj   +1 more source

On multidimensional solitons and their legacy in contemporary Atomic, Molecular and Optical physics [PDF]

open access: yes, 2016
This viewpoint relates to an article by B A Malomed, D Mihalache, F Wise, and L Torner (2005 J. Opt. B: Quantum Semiclass. Opt. 7 R53–R72) and was published as part of a series of viewpoints celebrating 50 of the most influential papers published in the ...
Malomed, Boris   +3 more
core   +2 more sources

Out-of-equilibrium thermodynamics of quantum optomechanical systems

open access: yesNew Journal of Physics, 2015
We address the out-of-equilibrium thermodynamics of an isolated quantum system consisting of a cavity optomechanical device. We explore the dynamical response of the system when driven out of equilibrium by a sudden quench of the coupling parameter and ...
M Brunelli   +5 more
doaj   +1 more source

Testing the foundation of quantum physics in space via Interferometric and non-interferometric experiments with mesoscopic nanoparticles

open access: yesCommunications Physics, 2021
This perspective presents current and future possibilities offered by space technology for testing quantum mechanics, with a focus on mesoscopic superposition of nanoparticles and the potential of interferometric and non-interferometric experiments in ...
Giulio Gasbarri   +7 more
doaj   +1 more source

Entanglement classification via neural network quantum states

open access: yesNew Journal of Physics, 2020
The task of classifying the entanglement properties of a multipartite quantum state poses a remarkable challenge due to the exponentially increasing number of ways in which quantum systems can share quantum correlations.
Cillian Harney   +3 more
doaj   +1 more source

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