Search Results - "Khajavikhan, Mercedeh"
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Topological insulator laser: Experiments
Published in Science (American Association for the Advancement of Science) (16-03-2018)“…Physical systems exhibiting topological invariants are naturally endowed with robustness against perturbations, as manifested in topological…”
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Topological insulator laser: Theory
Published in Science (American Association for the Advancement of Science) (16-03-2018)“…Topological insulators are phases of matter characterized by topological edge states that propagate in a unidirectional manner that is robust to imperfections…”
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Supersymmetric laser arrays
Published in Science (American Association for the Advancement of Science) (08-02-2019)“…Scaling up the radiance of coupled laser arrays has been a long-standing challenge in photonics. In this study, we demonstrate that notions from…”
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Parity-time–symmetric microring lasers
Published in Science (American Association for the Advancement of Science) (21-11-2014)“…The ability to control the modes oscillating within a laser resonator is of fundamental importance. In general, the presence of competing modes can be…”
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Realizing spin Hamiltonians in nanoscale active photonic lattices
Published in Nature materials (01-07-2020)“…Spin models arise in the microscopic description of magnetic materials and have been recently used to map certain classes of optimization problems involving…”
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Dynamically Encircling Exceptional Points: Exact Evolution and Polarization State Conversion
Published in Physical review letters (03-03-2017)“…We show that a two-level non-Hermitian Hamiltonian with constant off-diagonal exchange elements can be analyzed exactly when the underlying exceptional point…”
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The dawn of non-Hermitian optics
Published in Communications physics (29-03-2019)“…Recent years have seen a tremendous progress in the theory and experimental implementations of non-Hermitian photonics, including all-lossy optical systems as…”
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Winding around non-Hermitian singularities
Published in Nature communications (15-11-2018)“…Non-Hermitian singularities are ubiquitous in non-conservative open systems. Owing to their peculiar topology, they can remotely induce observable effects when…”
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Room temperature electrically pumped topological insulator lasers
Published in Nature communications (08-06-2021)“…Topological insulator lasers (TILs) are a recently introduced family of lasing arrays in which phase locking is achieved through synthetic gauge fields. These…”
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Non-Hermitian and topological photonics: optics at an exceptional point
Published in Nanophotonics (Berlin, Germany) (02-10-2020)“…In the past few years, concepts from non-Hermitian (NH) physics, originally developed within the context of quantum field theories, have been successfully…”
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Metastructures: From physics to application
Published in Applied physics letters (07-02-2022)Get full text
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Gain-induced topological response via tailored long-range interactions
Published in Nature physics (01-06-2021)“…The ability to tailor the hopping interactions between the constituent elements of a physical system could enable the observation of unusual phenomena that are…”
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Integrated multi-port circulators for unidirectional optical information transport
Published in Scientific reports (18-05-2017)“…On-chip photonic networks hold great promise for enabling next-generation high speed computation and communication systems. It is currently envisioned that…”
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Guiding charged particles in vacuum via Lagrange points
Published in Nature communications (11-08-2024)“…We propose a method for guiding charged particles such as electrons and protons, in vacuum, by employing the exotic properties of Lagrange points. This leap is…”
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Publisher Correction: Guiding charged particles in vacuum via Lagrange points
Published in Nature communications (11-09-2024)Get full text
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Single mode lasing in transversely multi-moded PT-symmetric microring resonators
Published in Laser & photonics reviews (01-05-2016)“…Conventional techniques for transverse mode discrimination rely on introducing differential external losses to the different competing mode sets, enforcing…”
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Complex skin modes in non-Hermitian coupled laser arrays
Published in Light, science & applications (28-11-2022)“…From biological ecosystems to spin glasses, connectivity plays a crucial role in determining the function, dynamics, and resiliency of a network. In the realm…”
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Electrically Pumped Microring Parity-Time-Symmetric Lasers
Published in Proceedings of the IEEE (01-05-2020)“…Microscale and nanoscale electrically pumped lasers are expected to play an indispensable role in future photonic integrated circuits. Small footprint, low…”
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Thermal control of the topological edge flow in nonlinear photonic lattices
Published in Nature communications (29-07-2022)“…The chaotic evolution resulting from the interplay between topology and nonlinearity in photonic systems generally forbids the sustainability of optical…”
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Edge-Mode Lasing in 1D Topological Active Arrays
Published in Physical review letters (15-03-2018)Get full text
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