S
Stefano Longhi
Researcher at Polytechnic University of Milan
Publications - 614
Citations - 20885
Stefano Longhi is an academic researcher from Polytechnic University of Milan. The author has contributed to research in topics: Laser & Hermitian matrix. The author has an hindex of 66, co-authored 583 publications receiving 17200 citations. Previous affiliations of Stefano Longhi include University of the Balearic Islands & Massachusetts Institute of Technology.
Papers
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PT-symmetric laser absorber
TL;DR: Chong et al. as mentioned in this paper showed that a coherent perfect absorber (CPA) can be obtained by reversing the gain with absorption, and thus it generally differs from the lasing medium.
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Bloch oscillations in complex crystals with PT symmetry.
TL;DR: Novel dynamical phenomena with no counterpart in ordinary lattices, such as nonreciprocal Bloch oscillations related to violation of the Friedel's law of Bragg scattering in complex potentials, are highlighted.
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Quantum-optical analogies using photonic structures
TL;DR: In this article, a review of recent theoretical and experimental advances in the field of quantum-optical analogies is presented, including some relevant optical analogies based on the use of curved photonic structures, including: coherent destruction of tunneling in driven bistable potentials, coherent population transfer and adiabatic passage in laser-driven multilevel atomic systems; quantum decay control and Zeno dynamics; electronic Bloch oscillations and Zener tunneling, Anderson localization and dynamic localization in crystalline potentials.
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Orbital angular momentum microlaser
Pei Miao,Zhifeng Zhang,Jingbo Sun,Wiktor Walasik,Stefano Longhi,Natalia M. Litchinitser,Liang Feng +6 more
TL;DR: By exploiting the emerging non-Hermitian photonics design at an exceptional point, this article demonstrated a microring laser producing a singlemode OAM vortex lasing with the ability to precisely define the topological charge of the OAM mode.
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Light propagation and localization in modulated photonic lattices and waveguides
TL;DR: In this article, the authors review both theoretical and experimental advances in the recently emerged field of modulated photonic lattices and highlight a new type of modulation-induced light localization based on the defect-free surface waves.