Spin-orbit-coupled fluids of light in bulk nonlinear media
| Autor: | Giovanni I. Martone, Tom Bienaimé, Nicolas Cherroret |
|---|---|
| Přispěvatelé: | Laboratoire Kastler Brossel (LKB (Jussieu)), Fédération de recherche du Département de physique de l'Ecole Normale Supérieure - ENS Paris (FRDPENS), Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
| Rok vydání: | 2021 |
| Předmět: |
[PHYS]Physics [physics]
Physics Helmholtz equation Paraxial approximation Degrees of freedom (physics and chemistry) FOS: Physical sciences Polarization (waves) 01 natural sciences 010305 fluids & plasmas Coupling (physics) Nonlinear system Quantum Gases (cond-mat.quant-gas) Quantum electrodynamics 0103 physical sciences Condensed Matter - Quantum Gases 010306 general physics Anisotropy ComputingMilieux_MISCELLANEOUS Optics (physics.optics) Physics - Optics Spin-½ |
| Zdroj: | Physical Review A Physical Review A, American Physical Society 2021, 104 (1), ⟨10.1103/PhysRevA.104.013510⟩ |
| ISSN: | 2469-9934 2469-9926 |
| DOI: | 10.1103/physreva.104.013510 |
| Popis: | We show that nonparaxial polarized light beams propagating in a bulk nonlinear Kerr medium naturally exhibit a coupling between the motional and the polarization degrees of freedom, realizing a spin-orbit-coupled mixture of fluids of light. We investigate the impact of this mechanism on the Bogoliubov modes of the fluid, using a suitable density-phase formalism built upon a linearization of the exact Helmholtz equation. The Bogoliubov spectrum is found to be anisotropic, and features both low-frequency gapless branches and high-frequency gapped ones. We compute the amplitudes of these modes and propose a couple of experimental protocols to study their excitation mechanisms. This allows us to highlight a phenomenon of hybridization between density and spin modes, which is absent in the paraxial description and represents a typical fingerprint of spin-orbit coupling. 18 pages, 3 figures, accepted manuscript, to appear in PRA |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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