Quantum-mechanical properties of Bessel beams
Rocío Jáuregui,Shahen Hacyan +1 more
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In this article, Bessel beams are studied within the general framework of quantum optics and the two modes of the electromagnetic field are quantized and the basic dynamical operators are identified.Abstract:
Bessel beams are studied within the general framework of quantum optics. The two modes of the electromagnetic field are quantized and the basic dynamical operators are identified. As we show explicitly, the operators that are usually associated with linear momentum, orbital angular momentum, and spin do not satisfy the algebra of the translation and rotation group. Nevertheless, we identify some components of these operators that represent observable quantities in an appropriate basis, thus characterizing the quantum numbers of Bessel photons. Some physical consequences of these results are discussed.read more
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Theory and applications of free-electron vortex states
Konstantin Y. Bliokh,Konstantin Y. Bliokh,Igor P. Ivanov,Giulio Guzzinati,Laura Clark,Laura Clark,R. Van Boxem,Armand Béché,Roeland Juchtmans,Miguel A. Alonso,Peter Schattschneider,Franco Nori,Franco Nori,Johan Verbeeck +13 more
TL;DR: In this paper, the main properties of electron vortex states, experimental achievements and possible applications within transmission electron microscopy, as well as the possible role of vortex electrons in relativistic and high-energy processes are described.
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The angular momentum controversy: What’s it all about and does it matter?
Elliot Leader,Cédric Lorcé +1 more
TL;DR: In this article, the authors provide a pedagogical introduction to the angular momentum decomposition in a gauge theory, present the main relevant decompositions and discuss in detail several aspects of the controversies regarding the question of gauge invariance, frame dependence, uniqueness and measurability.
Journal ArticleDOI
The angular momentum controversy: What's it all about and does it matter?
Elliot Leader,Cédric Lorcé +1 more
TL;DR: In this article, the authors provide a pedagogical introduction to the angular momentum decomposition in a gauge theory, present the main relevant decompositions and discuss in detail several aspects of the controversies regarding the question of gauge invariance, frame dependence, uniqueness and measurability.
Journal ArticleDOI
Electromagnetic Duality Symmetry and Helicity Conservation for the Macroscopic Maxwell's Equations
Ivan Fernandez-Corbaton,Xavier Zambrana-Puyalto,Nora Tischler,Xavier Vidal,Mathieu L. Juan,Gabriel Molina-Terriza +5 more
TL;DR: It is shown that the electromagnetic duality symmetry can be restored for the macroscopic Maxwell's equations by the presence of charges, and the restoration is shown to be independent of the geometry of the problem.
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Conservation of the spin and orbital angular momenta in electromagnetism
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References
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