Results 21 to 30 of about 331,933 (343)

Real applications of quantum imaging [PDF]

open access: yes, 2016
In the last years the possibility of creating and manipulating quantum states of light has paved the way to the development of new technologies exploiting peculiar properties of quantum states, as quantum information, quantum metrology & sensing, quantum
Genovese, Marco
core   +2 more sources

Separating neuronal activity and systemic low-frequency oscillation related BOLD responses at nodes of the default mode network during resting-state fMRI with multiband excitation echo-planar imaging

open access: yesFrontiers in Neuroscience, 2022
Functional magnetic resonance imaging (fMRI) evaluates brain activity using blood oxygenation level-dependent (BOLD) contrast. Resting-state fMRI (rsfMRI) examines spontaneous brain function using BOLD in the absence of a task, and the default mode ...
Atsushi Tachibana   +7 more
doaj   +1 more source

Simple method for sub-diffraction resolution imaging of cellular structures on standard confocal microscopes by three-photon absorption of quantum dots [PDF]

open access: yes, 2013
This study describes a simple technique that improves a recently developed 3D sub-diffraction imaging method based on three-photon absorption of commercially available quantum dots.
A Franceschetti   +28 more
core   +5 more sources

An introduction to ghost imaging: quantum and classical [PDF]

open access: yes, 2017
Ghost imaging has been a subject of interest to the quantum optics community for the past 20 years. Initially seen as manifestation of quantum spookiness, it is now recognized as being implementable in both single- and many-photon number regimes.
Boyd, Robert W., Padgett, Miles J.
core   +1 more source

Quantum Imaging Technologies

open access: yesLa Rivista del Nuovo Cimento, 2014
Over the past three decades, quantum mechanics has allowed the development of technologies that provide unconditionally secure communication. In parallel, the quantum nature of the transverse electromagnetic field has spawned the field of quantum imaging that encompasses technologies such as quantum ghost imaging and high-dimensional quantum key ...
Malik, Mehul, Boyd, Robert W.
openaire   +2 more sources

Novel Image State Ensemble Decomposition Method for M87 Imaging

open access: yesApplied Sciences, 2020
This paper proposes a new method of image decomposition with a filtering capability. The image state ensemble decomposition (ISED) method has generative capabilities that work by removing a discrete ensemble of quanta from an image to provide a range of ...
Timothy Ryan Taylor   +2 more
doaj   +1 more source

Retrodictive states and two-photon quantum imaging [PDF]

open access: yes, 2003
We use retrodictive quantum theory to analyse two-photon quantum imaging systems. The formalism is particularly suitable for calculating conditional probability distributions.Comment: 5 pages, 3 ...
Barnett, Stephen M.   +3 more
core   +2 more sources

Topological quantum image analysis [PDF]

open access: yesSPIE Proceedings, 2009
A new approach to analyzing visual images is proposed, based on the idea of converting an optical image into a spatially varying pattern of polarized squeezed light, which is then used to produce a pattern of chiral edge currents in a thin film topological insulator.
Chapline, George, DuBois, Jonathan L
openaire   +2 more sources

Single caudate neurons encode temporally discounted value for formulating motivation for action

open access: yeseLife, 2021
The term ‘temporal discounting’ describes both choice preferences and motivation for delayed rewards. Here we show that neuronal activity in the dorsal part of the primate caudate head (dCDh) signals the temporally discounted value needed to compute the ...
Yukiko Hori   +10 more
doaj   +1 more source

Computing metasurfaces for all-optical image processing: a brief review

open access: yesNanophotonics, 2022
Computing metasurfaces are two-dimensional artificial nanostructures capable of performing mathematical operations on the input electromagnetic field, including its amplitude, phase, polarization, and frequency distributions.
He Shanshan, Wang Ruisi, Luo Hailu
doaj   +1 more source

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