Results 41 to 50 of about 93,872 (266)
Quantum reflection as a new signature of quantum vacuum nonlinearity
New Journal of Physics, 2013 We show that photons subject to a spatially inhomogeneous electromagnetic field can experience quantum reflection. Based on this observation, we propose quantum reflection as a novel means to probe the nonlinearity of the quantum vacuum in the presence ...
Holger Gies +2 more
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Counterpropagating topological and quantum Hall edge channels
Nature Communications, 2022 The quantum spin Hall effect disappears at high magnetic fields when the band inversion is lifted. The authors demonstrate that in contrast, in disordered samples, counter-propagating topological and quantum Hall edge channels prevent the detection of ...
Saquib Shamim +9 more
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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 +4 more
wiley +1 more source
Physical Review ResearchIn both classical and quantum thermodynamics, physical quantities are typically assigned objective values defined independently of our observations. We then refer to the “work performed by a gas,” or the “entropy of the gas,” regardless of how they are ...
Giulia Rubino +2 more
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FEBS Open Bio, EarlyView.The dFoCC pipeline starts with observed DED and resting‐state coordinates, which are then used to generate a library of triggered states. Correlation analysis of the calculated DED features of each candidate vs observed DED permits quantitative evaluation of candidate structural quality.
Meng Iao Fong +3 more
wiley +1 more source
Quantized surface transport in topological Dirac semimetal films
Nature Communications, 2019 The recent observation of quantum Hall states in bulk Dirac semimetal Cd3As2 is possibly evolved from topological states. Here, Nishihaya et al. report surface quantum oscillation and its evolution into quantum Hall states in Cd3As2 thin films, where ...
Shinichi Nishihaya +9 more
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Loop Quantum Gravity and Observations [PDF]
, 2017 Quantum gravity has long been thought to be completely decoupled from experiments or observations. Although it is true that smoking guns are still missing, there are now serious hopes that quantum gravity phenomena might be tested. We review here some possible ways to observe loop quantum gravity effects either in the framework of cosmology or in ...
Barrau, A., Grain, J.
openaire +2 more sources
Adaptive estimation of quantum observables
Quantum, 2023 The accurate estimation of quantum observables is a critical task in science. With progress on the hardware, measuring a quantum system will become increasingly demanding, particularly for variational protocols that require extensive sampling. Here, we introduce a measurement scheme that adaptively modifies the estimator based on previously obtained ...
Ariel Shlosberg +5 more
openaire +3 more sources
Molecular characterization of covRS mutations in M1UK Streptococcus pyogenes
FEBS Open Bio, EarlyView.Group A Streptococcus (GAS) acquires covRS mutations driving a hypervirulent bacterial state, frequently associated with invasive disease‐like necrotizing fasciitis. We demonstrate that the newly emerged M1UK GAS lineage can also acquire these mutations.
Jarrad Pritchard +12 more
wiley +1 more source
Observation of quantum strong Mpemba effect
Nature CommunicationsAn ancient and counterintuitive phenomenon known as the Mpemba effect (water can cool faster when initially heated up) showcases the critical role of initial conditions in relaxation processes.
Jie Zhang +12 more
doaj +1 more source