Results 21 to 30 of about 1,417 (115)
Optics Express, 2022 It is known that a twisted Gaussian Schell-model (TGSM) beam with elliptical Gaussian amplitude will rotate its beam spot upon propagation because of the vortex structure of the transverse energy flux. In this paper, we study a special kind of twisted partially coherent beams named twisted Hermite-Gaussian correlated Schell model (HGCSM) beam whose ...
Gaofeng, Wu +3 more
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Powers of the degree of coherence
Optics Express, 2015 We establish conditions under which a legitimate degree of coherence of a statistically stationary beam-like field raised to a power results in a novel legitimate degree of coherence. The general results and examples relate to scalar beams having uniform and non-uniform correlations.
Zhangrong, Mei +2 more
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Research Paper: The Entanglement of Three-mode Spin Coherent States [PDF]
فیزیک کاربردی ایران, 2021 In this study, the detection method of entanglement of 3-mode spin coherence states is investigated. For this purpose, by properly defining the computational codes, these states are mapped to a three qubit quantum state, and then, by using the Mermin ...
Kaveh Pasandideh +1 more
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Single-shot transverse coherence in seeded and unseeded free-electron lasers: A comparison
Physical Review Accelerators and Beams, 2022 The advent of x-ray free-electron lasers (FELs) drastically enhanced the capabilities of several analytical techniques, for which the degree of transverse (spatial) coherence of the source is essential.
M. Pop +21 more
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Mixedness, Coherence and Entanglement in a Family of Three-Qubit States
Entropy, 2022 We consider a family of states describing three-qubit systems. We derived formulas showing the relations between linear entropy and measures of coherence such as degree of coherence, first- and second-order correlation functions. We show that qubit–qubit
Joanna K. Kalaga +3 more
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Coulomb gluons will generally destroy coherence
Journal of High Energy Physics, 2021 Coherence violation is an interesting and counter-intuitive phenomenon in QCD. We discuss the circumstances under which violation occurs in observables sensitive to soft radiation and arrive at the conclusion that almost all such observables at hadron ...
Jeffrey R. Forshaw, Jack Holguin
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Invariant degrees of coherence of partially polarized light
Optics Express, 2005 The spatio-temporal properties of partially polarized light are analyzed in order to separate partial polarization and partial coherence. For that purpose we introduce useful invariance properties which allow one to characterize intrinsic properties of the optical light independently of the particular experimental conditions. This approach leads to new
Réfrégier, Philippe +1 more
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Coherence of European Union Actions at the UN Human Rights Council and the Council of Europe
Vestnik MGIMO-Universiteta, 2019 The current methodological debates on the EU external actions at international organisations raise the issue of the EU coherence. The scholarship tends to focus on EU vertical and horizontal coherence in various policies, making the EU internal ...
Anatoly Boyashov
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Opto-Electronic ScienceThe ability to overcome the negative effects, induced by obstacles and turbulent atmosphere, is a core challenge of long-distance information transmission, and it is of great significance in free-space optical communication.
Zhao Zhang +7 more
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Variant-Coherence Gaussian Sources
Photonics, 2021 The celebrated Gaussian Schell model source with its shift-invariant degree of coherence may be the basis for devising sources with space-variant properties in the spirit of structured coherence.
Franco Gori, Massimo Santarsiero
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