1.7k citations · 23.2k across the 226 of their papers we have counts for
24 papers · 1 filter
Full-color complex-amplitude vectorial holograms based on multi-freedom metasurfaces
Zi-Lan Deng, Mingke Jin, Xuan Ye +9
Phase, polarization, amplitude and frequency represent the basic dimensions of light, playing crucial roles for both fundamental light-mater interactions and all major optical appl…
Fourth-Order Topological Insulator via Dimensional Reduction
Kai Chen, Matthew Weiner, Mengyao Li +3
The properties of topological systems are inherently tied to their dimensionality. Higher-dimensional physical systems exhibit topological properties not shared by their lower dime…
Suppressing Material Loss for Functional Nanophotonics Using Bandgap Engineering
Mingsong Wang, Alex Krasnok, Sergey Lepeshov +6
All-dielectric nanoantennas have recently opened exciting opportunities for functional nanophotonics, owing to their strong optical resonances along with low material loss in the n…
Active Nanophotonics
Alex Krasnok, Andrea Alù
Recent progress in nanofabrication has led to tremendous technological developments in nanophotonics, which rely on the interaction of light with nanostructured matter. Nanophotoni…
Virtual Parity-Time Symmetry
Huanan Li, Ahmed Mekawy, Alex Krasnok +1
Parity-time (PT) symmetry has been opening exciting opportunities in optics, yet the required careful balance of loss and gain has been hindering its practical implementations. Her…
Direct visualization of topological transitions and higher-order topological states in photonic metasurfaces
Anton Vakulenko, Svetlana Kiriushechkina, Mengyao Li +6
Topological photonic systems represent a new class of optical materials supporting boundary modes with unique properties, not found in conventional photonics. While the early resea…
Demonstration of a quantized acoustic octupole topological insulator
Xiang Ni, Mengyao Li, Matthew Weiner +2
Recently extended from the modern theory of electric polarization, quantized multipole topological insulators (QMTIs) describe higher-order multipole moments, lying in nested Wilso…
Theory and Design of Multifunctional Space-Time Metasurfaces
Xuchen Wang, Ana Diaz-Rubio, Huanan Li +2
Integrating multiple functionalities into a single metasurface is becoming of great interest for future intelligent communication systems. While such devices have been extensively…
Photonic Higher-Order Topological States Induced by Long Range Interactions
Mengyao Li, Dmitry Zhirihin, Dmitry Filonov +4
The discovery of topological phases has recently led to a paradigm shift in condensed matter physics, and facilitated breakthroughs in engineered photonics and acoustic metamateria…
Can a nonradiating mode be externally excited? Nonscattering states vs. embedded eigenstates
Francesco Monticone, Dimitrios Sounas, Alex Krasnok +1
In this Letter, we discuss the general problem of exciting radiationless field distributions in open cavities, with the goal of clarifying recent findings on this topic. We point o…
Controlling photonic spin Hall effect via exceptional points
Xinxing Zhou, Xiao Lin, Zhicheng Xiao +4
The photonic spin Hall effect (SHE), featured by a spin-dependent transverse shift of an impinging optical beam driven by its polarization handedness, has many applications includi…
Harnessing Spectral Singularities in Non-Hermitian Cylindrical Structures
Massimo Moccia, Giuseppe Castaldi, Andrea Alù +1
Non-Hermitian systems characterized by suitable spatial distributions of gain and loss can exhibit "spectral singularities" in the form of zero-width resonances associated to real-…
Highly-Linear Magnet-Free Microelectromechanical Circulators
Yao Yu, Giuseppe Michetti, Ahmed Kord +6
This paper reports the first demonstration of a magnet-free, high performance microelectromechanical system (MEMS) based circulator. An innovative circuit based on the commutation…
Anomalies in Light Scattering
Alex Krasnok, Denis Baranov, Huanan Li +3
Scattering of electromagnetic waves lies at the heart of most experimental techniques over nearly the entire electromagnetic spectrum, ranging from radio waves to optics and X-rays…
Radio Frequency Magnet-free Circulators Based on Spatiotemporal Modulation of Surface Acoustic Wave Filters
Yao Yu, Giuseppe Michetti, Michele Pirro +6
In this paper, a new generation of magnet-free circulators with high performance is proposed. Circulators are crucial devices in modern communication systems due to their ability t…
Epoxy-inspired Nonlinear Interface Integrating Monolayer Transition-Metal Dichalcogenides with Linear Plasmonic Nanosieves
Xuanmiao Hong, Guangwei Hu, Wenchao Zhao +11
Although TMDC monolayers offer giant optical nonlinearity within few-angstrom thickness, it is still elusive to modulate and engineer the wavefront of nonlinear emissions. The grai…
Inverse-designed photonic circuits for fully passive, bias-free Kerr-based nonreciprocal transmission and routing
Ki Youl Yang, Jinhie Skarda, Michele Cotrufo +6
Nonreciprocal devices such as isolators and circulators are key enabling technologies for communication systems, both at microwave and optical frequencies. While nonreciprocal devi…
Nonradiative to Superscattering Switch with Phase-Change Materials
Sergey Lepeshov, Alex Krasnok, Andrea Alù
Phase-change materials (PCMs) can switch between different crystalline states as a function of an external bias, offering a pronounced change of their dielectric function. In order…
Optomechanically Induced Birefringence and Faraday Effect
Robert Duggan, Javier del Pino, Ewold Verhagen +1
We demonstrate an optomechanical platform where optical mode conversion mediated by mechanical motion enables arbitrary tailoring of polarization states of propagating light fields…
Demonstration of a 3rd order hierarchy of higher order topological states in a three-dimensional acoustic metamaterial
Matthew Weiner, Xiang Ni, Mengyao Li +2
In the past years classical wave-systems have constituted an excellent platform for emulating complex quantum phenomena. This approach has been especially fruitful in demonstrating…
CMOS Integrated Magnetless Circulators Based on Spatiotemporal Modulation Angular-Momentum Biasing
Ahmed Kord, Mykhailo Tymchenko, Dimitrios Sounas +2
In this paper, we introduce the first integrated circuit (IC) implementation of spatiotemporally modulated angular-momentum (STM-AM) biased magnetless circulators. The design is ba…
One-Way Hyperbolic Metasurfaces Based on Synthetic Motion
Yarden Mazor, Andrea Alù
Moving metasurfaces support guided waves exhibiting unusual optical properties, including strong anisotropy, nonreciprocity, and hyperbolic dispersion. However, for these phenomena…
All-optical reconfigurable chiral meta-molecules
Linhan Lin, Sergey Lepeshov, Alex Krasnok +5
Chirality is a ubiquitous phenomenon in the natural world. Many biomolecules without inversion symmetry such as amino acids and sugars are chiral molecules. Measuring and controlli…
Dark-Exciton-Mediated Fano Resonance from a Single Gold Nanostructure Deposited on Monolayer WS2 at Room Temperature
Mingsong Wang, Zilong Wu, Alex Krasnok +8
Strong spatial confinement and highly reduced dielectric screening provide monolayer transition metal dichalcogenides (TMDCs) with strong many-body effects, thereby possessing opti…