1.7k citations · 23.2k across the 226 of their papers we have counts for
15 papers · 2 filters
Temporal Switching to Extend the Bandwidth of Thin Absorbers
Huanan Li, Andrea Alù
Wave absorption in time-invariant, passive thin films is fundamentally limited by a trade-off between bandwidth and overall thickness. In this work, we investigate the use of tempo…
Directivity modulation of exciton emission using single dielectric nanospheres
Jie Fang, Mingsong Wang, Kan Yao +10
Coupling emitters with nanoresonators is an effective strategy to control light emission at the subwavelength scale with high efficiency. Low-loss dielectric nanoantennas hold part…
Multifunctional Resonant Wavefront-Shaping Meta-Optics Based on Multilayer and Multi-Perturbation Nonlocal Metasurfaces
Stephanie C. Malek, Adam C. Overvig, Andrea Alù +1
Photonic devices rarely provide both elaborate spatial control and sharp spectral control over an incoming wavefront. In optical metasurfaces, for example, the localized modes of i…
Observation of anti-parity-time-symmetry, phase transitions and exceptional points in an optical fibre
Arik Bergman, Robert Duggan, Kavita Sharma +3
The exotic physics emerging in non-Hermitian systems with balanced distributions of gain and loss has drawn a great deal of attention in recent years. These systems exhibit phase t…
All-optical nonreciprocity due to valley polarization in transition metal dichalcogenides
Yuma Kawaguchi, Sriram Guddala, Kai Chen +3
Nonreciprocity and nonreciprocal optical devices play a vital role in modern photonic technologies by enforcing one-way propagation of light. Most nonreciprocal devices today are m…
Quantum Embedded Superstates
Nikita Nefedkin, Andrea Alú, Alex Krasnok
Optical supercavity modes (superstates), i.e., hybrid modes emerging from the strong coupling of two nonorthogonal modes of an open cavity, can support ultranarrow lines in scatter…
Analog Computing with Metatronic Circuits
Mario Miscuglio, Yaliang Gui, Xiaoxuan Ma +5
Analog photonic solutions offer unique opportunities to address complex computational tasks with unprecedented performance in terms of energy dissipation and speeds, overcoming cur…
Chiral Quasi-Bound States in the Continuum
Adam Overvig, Nanfang Yu, Andrea Alu
Quasi-bound states in the continuum (q-BICs) are resonant states of suitably tailored nanostructures with long optical lifetimes controlled by symmetry-breaking perturbations. Whil…
Collective near-field coupling in infrared-phononic metasurfaces for nano-light canalization
Peining Li, Guangwei Hu, Irene Dolado +10
Polaritons, coupled excitations of photons and dipolar matter excitations, can propagate along anisotropic metasurfaces with either hyperbolic or elliptical dispersion. At the tran…
Observation of topological polaritons and photonic magic angles in twisted van der Waals bi-layers
Guangwei Hu, Qingdong Ou, Guangyuan Si +9
Twisted two-dimensional bi-layers offer exquisite control on the electronic bandstructure through the interlayer rotation and coupling, enabling magic-angle flat-band superconducti…
Transmissive Metagrating for Arbitrary Wavefront Shaping Over the Full Visible Spectrum
Zi-Lan Deng, Xuan Ye, Hao-Yang Qiu +10
Metagratings have been shown to form an agile and efficient platform for extreme wavefront manipulation, going beyond the limitations of gradient metasurfaces. Previous approaches…
Berreman Embedded Eigenstates for Narrowband Absorption and Thermal Emission
Zarko Sakotic, Alex Krasnok, Norbert Cselyuszka +2
Embedded eigenstates are nonradiative modes of an open structure with momentum compatible with radiation, yet characterized by unboundedly large Q-factors. Traditionally, these sta…
Virtual Critical Coupling
Younes Radi, Alex Krasnok, Andrea Alú
Electromagnetic resonators are a versatile platform to harvest, filter and trap electromagnetic energy, at the basis of many applications from microwaves to optics. Resonators with…
Tunable nanophotonics enabled by chalcogenide phase-change materials
Sajjad Abdollahramezani, Omid Hemmatyar, Hossein Taghinejad +5
Nanophotonics has garnered intensive attention due to its unique capabilities in molding the flow of light in the subwavelength regime. Metasurfaces (MSs) and photonic integrated c…
Moiré Hyperbolic Metasurfaces
Guangwei Hu, Alex Krasnok, Yarden Mazor +2
Recent advances in twistronics of low-dimensional materials, such as bilayer graphene and transition-metal dichalcogenides, have enabled a plethora of unusual phenomena associated…