Results 21 to 30 of about 417,898 (276)

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

Dynamical symmetries and crossovers in a three-spin system with collective dissipation

open access: yesNew Journal of Physics, 2015
We consider the non-equilibrium dynamics of a simple system consisting of interacting spin-1/2 particles subjected to a collective damping. The model is close to situations that can be engineered in hybrid electro/opto-mechanical settings.
S Pigeon   +5 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

Robust quantum state engineering through coherent localization in biased-coin quantum walks

open access: yesEPJ Quantum Technology, 2018
We address the performance of a coin-biased quantum walk as a generator for non-classical position states of the walker. We exploit a phenomenon of coherent localization in the position space - resulting from the choice of small values of the coin ...
Helena Majury   +4 more
doaj   +1 more source

Advances in Atomic, Molecular, and Optical Physics

open access: yes, 2013
F. Calegari   +7 more
  +9 more sources

Energetic cost of quantum control protocols

open access: yesNew Journal of Physics, 2019
We quantitatively assess the energetic cost of several well-known control protocols that achieve a finite time adiabatic dynamics, namely counterdiabatic and local counterdiabatic driving, optimal control, and inverse engineering.
Obinna Abah   +5 more
doaj   +1 more source

Optically controlled resonance energy transfer:Mechanism and configuration for all-optical switching [PDF]

open access: yes, 2008
In a molecular system of energy donors and acceptors, resonance energy transfer is the primary mechanism by means of which electronic energy is redistributed between molecules, following the excitation of a donor. Given a suitable geometric configuration
Andrews D. L.   +3 more
core   +1 more source

Non-Gaussian distribution of collective operators in quantum spin chains

open access: yesNew Journal of Physics, 2016
We numerically analyse the behavior of the full distribution of collective observables in quantum spin chains. While most of previous studies of quantum critical phenomena are limited to the first moments, here we demonstrate how quantum fluctuations at ...
M Moreno-Cardoner   +2 more
doaj   +1 more source

Excitons in Molecular Aggregates with L\'evy Disorder: Anomalous Localization and Exchange Broadening of Optical Spectra [PDF]

open access: yes, 2010
We predict the existence of exchange broadening of optical lineshapes in disordered molecular aggregates and a nonuniversal disorder scaling of the localization characteristics of the collective electronic excitations (excitons).
Eisfeld, A.   +3 more
core   +4 more sources

Observation of a shape resonance of the positronium negative ion

open access: yesNature Communications, 2016
The Positronium negative ion is formed by two electrons bound to a positron, and experimental investigations of its states and energy levels are difficult due to its short lifetime.
Koji Michishio   +8 more
doaj   +1 more source

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