Methods of quantum mechanics applied to partially coherent light beams

Gase, R.

doi:10.1364/josaa.11.002121

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…are the mutual intensities of a Gaussian Schell model of the particle beam (Schell, 1967;Gase, 1994),…”

Section: Partially Coherent Sourcementioning

confidence: 99%

Three-dimensional model of a split-crystal X-ray and neutron interferometer

Sasso¹,

Mana²,

Massa³

2022

J Appl Cryst

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The observation of neutron interference using a crystal interferometer having a separate analyser opens the way to the construction and operation of interferometers with vast arm separation and length. Setting the design specifications requires a three-dimensional dynamical theory model of their operation. This paper develops the required three-dimensional mathematical framework, which also comprises coherent and incoherent illuminations; it is applied to study the visibility of the interference fringes.

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“…are the mutual intensities of a Gaussian Schell model of the particle beam (Schell, 1967;Gase, 1994),…”

Section: Partially Coherent Sourcementioning

confidence: 99%

Three-dimensional model of a split-crystal X-ray and neutron interferometer

Sasso¹,

Mana²,

Massa³

2022

J Appl Cryst

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“…To conclude, it is opportune to recall that the concept of the von Neumann entropy S can be transferred in a direct way to electromagnetic waves by [94][95][96][97]…”

Section: Degree Of Polarizationmentioning

confidence: 99%

Quantum concepts in optical polarization

et al. 2021

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We comprehensively review the quantum theory of the polarization properties of light. In classical optics, these traits are characterized by the Stokes parameters, which can be geometrically interpreted using the Poincaré sphere. Remarkably, these Stokes parameters can also be applied to the quantum world, but then important differences emerge: now, because fluctuations in the number of photons are unavoidable, one is forced to work in the three-dimensional Poincaré space that can be regarded as a set of nested spheres. Additionally, higher-order moments of the Stokes variables might play a substantial role for quantum states, which is not the case for most classical Gaussian states. This brings about important differences between these two worlds that we review in detail. In particular, the classical degree of polarization produces unsatisfactory results in the quantum domain. We compare alternative quantum degrees and put forth that they order various states differently. Finally, intrinsically nonclassical states are explored and their potential applications in quantum technologies are discussed.

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“…It is not physically reasonable to assume that a coherent wave packet leaves the diffraction slit due to the thermal production of the fullerene molecules as discussed above. Therefore, in order to introduce some incoherence along the spatial transverse direction, where the quantum effects occur, we use the formalism of density matrices (Gase, 1994;Ballentine, 1998;Scully & Zubairy, 1997;Fano, 1957). The density matrix of the beam at time t is given by…”

Section: Macromolecules Diffraction and Indirect Evidence For The Goumentioning

confidence: 99%