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Articles by Marco Ornigotti
Condensed Matter > Mesoscale and Nanoscale Physics
Structured light provides a powerful means of controlling matter while itself exhibiting nontrivial spatial topology. Here, we show that these spatial structures can be harnessed to locally engineer the topological properties of matter.
Effect of partial polarization on Goos-Hänchen and Imbert-Fedorov shifts
We derive the Goos–Hänchen (GH) and Imbert–Fedorov (IF) shifts of random electromagnetic beams with arbitrary state and degree of polarization and spatial coherence.
Observation of the topological aberrations of twisted light - Nature Communications
Abstract When reflected from an interface, a laser beam generally drifts and tilts away from the path predicted by ray optics, an intriguing consequence of its finite transverse extent.
Two-dimensional Weyl materials in the presence of constant magnetic fields
Abstract In this work we investigate the effect of a constant external, or artificial, magnetic field on the nonlinear response of two-dimensional (2D) Weyl materials. We calculate the Landau levels for tilted cones in 2D Weyl materials by treating the tilting in a perturbative manner and employ perturbation theory to calculate the tilting-induced correction to the magnetic field induced Landau spectrum.
Observation of the quantum Gouy phase - Nature Photonics
Abstract Controlling the evolution of photonic quantum states is crucial for most quantum information processing and metrology tasks. Due to its importance, many mechanisms of quantum state evolution have been tested in detail and are well understood; however, the fundamental phase anomaly of evolving waves, called the Gouy phase, has had a limited number of studies in the context of elementary quantum states of light, especially in the case of photon number states.
Synthetic Gauge Field Photonics
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Path integrals: From quantum mechanics to photonics
The path integral formulation of quantum mechanics, developed in the mid-20th century, is not only a remarkable synthesis of several of the core ideas of theoretical physics but also a powerful computational technique for the analysis of a huge variety of physical systems in very different contexts, such as quantum mechanics,1–61. R. P. Feynman, “Space-time approach to non-relativistic quantum mechanics,” Rev. Mod. Phys. 20, 367–387 (1948). https://doi.org/10.1103/revmodphys.20.3672. R. P. Feynman and A.
High-accuracy longitudinal position measurement using self-accelerating light
Abstract Radially self-accelerating light exhibits an intensity pattern that describes a spiraling trajectory around the optical axis as the beam propagates. In this article, we show in simulation and experiment how such beams can be used to perform a high-accuracy distance measurement with respect to a reference using simple off-axis intensity detection.
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