633 citations · 2.7k across the 39 of their papers we have counts for
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A single metagrating metastructure for wave-based parallel analog computing
Hamid Rajabalipanah, Ali Momeni, Mahdi Rahmanzadeh +2
Wave-based signal processing has witnessed a significant expansion of interest in a variety of science and engineering disciplines, as it provides new opportunities for achieving h…
Reciprocal Metasurfaces for On-axis Reflective Optical Computing
Ali Momeni, Hamid Rajabalipanah, Mahdi Rahmanzadeh +4
Analog computing has emerged as a promising candidate for real-time and parallel continuous data processing. This paper presents a reciprocal way for realizing asymmetric optical t…
Parallel Optical Computing Based on MIMO Metasurface Processors with Asymmetric Optical Response
Amirhossein Babaee, Ali Momeni, Ali Abdolali +1
We present a polarization-insensitive metasurface processor to perform spatial asymmetric filtering of an incident optical beam, thereby allowing for real-time parallel optical pro…
Electromagnetic fields in a time-varying medium: Exceptional points and operator symmetries
Theodoros T. Koutserimpas, Romain Fleury
In this paper, we study the interactions of electromagnetic waves with a non-dispersive dynamic medium that is temporally dependent. Electromagnetic fields under material time-modu…
Parametric amplification and bidirectional invisibility in PT-symmetric time-Floquet systems
Theodoros T. Koutserimpas, Andrea Alu, Romain Fleury
Parity-Time (PT) symmetric wave devices, which exploit balanced interactions between material gain and loss, exhibit extraordinary properties, including lasing and flux-conserving…
Non-reciprocal Optical Mirrors Based on Spatio-Temporal Modulation
Romain Fleury, Dimitrios L. Sounas, Andrea Alu
The recent surge of interest in temporal modulation schemes to induce magnet-free non-reciprocity has inspired several exciting opportunities for photonic technology. Here, we inve…
Crystalline metamaterials for topological properties at subwavelength scales
Simon Yves, Romain Fleury, Thomas Berthelot +3
The exciting discovery of topological condensed matter systems has lately triggered a search for their photonic analogs, motivated by the possibility of robust backscattering-immun…
Physical Bounds on Absorption and Scattering for Cloaked Sensors
Romain Fleury, Jason Soric, Andrea Alu
We derive and discuss general physical bounds on the electromagnetic scattering and absorption of passive structures. Our theory, based on passivity and power conservation, quantif…