Results 31 to 40 of about 528,108 (265)

Optimization and Analysis of Tangential Component Orientations in OPM-MEG Sensor Array

open access: yesBioengineering
Optically pumped magnetometers (OPMs) have brought a transformative advancement to magnetoencephalography (MEG), enabling flexible, noncryogenic, and wearable neuroimaging systems.
Wenli Wang   +7 more
doaj   +1 more source

Are the Weak Measurements Really Measurements?

open access: yesQuanta, 2013
Weak measurements can be seen as an attempt at answering the Which way? question without destroying interference between the pathways involved. Unusual mean values obtained in such measurements represent the response of a quantum system to this forbidden question, in which the true composition of virtual pathways is hidden from the observer.
openaire   +4 more sources

Energy-based weak measurement

open access: yesQuantum Studies: Mathematics and Foundations, 2020
When a well-localized photon is incident on a spatially superposed absorber but is not absorbed, the photon can still deliver energy to the absorber. It is shown that when the transferred energy is small relative to the energy uncertainty of the photon, this constitutes an unusual type of weak measurement of the absorber's energy, where the energy ...
Mordecai Waegell   +2 more
openaire   +2 more sources

“Weak” measurements and supraluminal communication [PDF]

open access: yesMoscow University Physics Bulletin, 2016
There is suggested a version of the experiment with a correlated pair of particles in the entangled state. The experiment demonstrates that, in the case of weak and/or non-demolition measurements of one of the particles, it is possible to transmit information with a speed not limited by velocity of light.
Belinsky, A. V., Zhukovsky, A. K.
openaire   +2 more sources

Postselected weak measurement beyond the weak value [PDF]

open access: yesPhysical Review A, 2010
The published version; with respect to previous one, note changes in Eqs. (16),(17),(19).
openaire   +2 more sources

Suppressing laser-power noise with a multifunctional liquid crystal polarization grating in miniaturized optically pumped magnetometers

open access: yesMicrosystems & Nanoengineering
Optically pumped magnetometers (OPMs) enable high-resolution biomagnetic imaging, yet conventional single-beam designs are constrained by bulky, alignment-intensive polarization optics and susceptibility to laser-power noise.
Zhibo Cui   +8 more
doaj   +1 more source

Weak Compactness and Vector Measures [PDF]

open access: yesCanadian Journal of Mathematics, 1955
Introduction. It is the purpose of this paper to develop a Lebesgue theory of integration of scalar functions with respect to a countably additive measure whose values lie in a Banach space. The class of integrable functions reduces to the ordinary space of Lebesgue integrable functions if the measure is scalar valued.
Bartle, R. G., Dunford, N., Schwartz, J.
openaire   +2 more sources

Weak Convergence of Topological Measures [PDF]

open access: yesJournal of Theoretical Probability, 2021
AbstractTopological measures and deficient topological measures are defined on open and closed subsets of a topological space, generalize regular Borel measures, and correspond to (nonlinear in general) functionals that are linear on singly generated subalgebras or singly generated cones of functions.
openaire   +3 more sources

Clinical Insights Into Hypercalcemia of Malignancy in Childhood

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Hypercalcemia of malignancy (HCM) is a rare but life‐threatening metabolic emergency in children that occurs in less than 1% of pediatric cancer cases, with a reported incidence ranging from 0.4% to 1.0% across different studies. While it is observed in 10%–20% of adult malignancies, pediatric HCM remains relatively uncommon.
Hüseyin Anıl Korkmaz
wiley   +1 more source

Alleviating optical pumping inhomogeneity using a polarization-encoded metasurface in NMR co-magnetometers

open access: yesMicrosystems & Nanoengineering
In nuclear magnetic resonance (NMR) co-magnetometers, the non-uniform transverse energy distribution of the pumping Gaussian beam can result in substantial optical pumping inhomogeneity and decoherence of atomic spins, which hinder the improvement of the
Yan Xu   +6 more
doaj   +1 more source

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