Víctor Pacheco‐Peña
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View article: Topological Valley Photonic Waveguides: Scattering Matrix Evaluation for Linear Computing
Topological Valley Photonic Waveguides: Scattering Matrix Evaluation for Linear Computing Open
Topological boundary modes utilizing valley mode waveguides have opened opportunities in, for instance, the design of high transmission waveguides with tolerance to geometrical defects and sharp bends. Applications of these waveguides incl…
View article: Space-harmonic approach to graded temporal metamaterials
Space-harmonic approach to graded temporal metamaterials Open
Metamaterials are mostly studied using the time-harmonic approach, where the wave propagation is spatially described. Recently, studies of media having electromagnetic properties that change in time have been given the attention of the sci…
View article: Temporal chirp, temporal lensing, and temporal routing via space-time interfaces
Temporal chirp, temporal lensing, and temporal routing via space-time interfaces Open
A time interface (a rapid change of the constitutive parameters of a material in time), applied within an unbounded medium where a wave travels, can enable frequency conversion and is considered the temporal analog of a spatial interface b…
View article: Holding and amplifying electromagnetic waves with temporal non-foster metastructures
Holding and amplifying electromagnetic waves with temporal non-foster metastructures Open
We introduce a mechanism that can both hold and amplify electromagnetic waves by rapidly changing the permittivity of the medium during the wave travel from a positive to a dispersionless (i.e. non-Foster) negative value and then back agai…
View article: Mirrors without spatial boundaries
Mirrors without spatial boundaries Open
Mirrors are one of the most elementary and ubiquitous components of optical systems. They use a sharp refractive index contrast to provide the basic capability of reflecting light. Motivated by recent developments of photonic time-varying …
View article: Topological Valley Photonic Waveguides: Scattering matrix evaluation for linear computing
Topological Valley Photonic Waveguides: Scattering matrix evaluation for linear computing Open
Topological boundary modes utilizing valley mode waveguides have opened opportunities in, for instance, the design of high transmission waveguides with tolerance to geometrical defects and sharp bends. Applications of these waveguides incl…
View article: Emulating photonic time interfaces via smooth temporal transitions
Emulating photonic time interfaces via smooth temporal transitions Open
The introduction of time as an additional degree of freedom to control wave-matter interactions have opened new avenues to fully control wave propagation in four dimensions (x,y,z,t). Time interfaces (rapid changes of the constitutive rela…
View article: Solving partial differential equations with waveguide-based metatronic networks
Solving partial differential equations with waveguide-based metatronic networks Open
View article: Perfect splitting in rectangular-waveguide junctions for analog computing
Perfect splitting in rectangular-waveguide junctions for analog computing Open
It has recently been shown how computing operations such as high-speed switching, routing, and solving partial differential equations can be performed by exploiting perfect splitting of electromagnetic waves in networks of waveguides from …
View article: Spatiotemporal cascading of dielectric waveguides [Invited]
Spatiotemporal cascading of dielectric waveguides [Invited] Open
Photonic time interfaces, as the temporal analogue of spatial interfaces between two media, consist of a rapid change of the electromagnetic properties of a material (such as permittivity, ε , and permeability, μ ) while the wave is presen…
View article: Solving partial differential equations with waveguide-based metatronic networks
Solving partial differential equations with waveguide-based metatronic networks Open
Photonic computing has recently become an interesting paradigm for high-speed calculation of computing processes using light-matter interactions. Here, we propose and study an electromagnetic wave-based structure with the ability to calcul…
View article: Spatiotemporal cascading of dielectric waveguides
Spatiotemporal cascading of dielectric waveguides Open
Photonic time interfaces, as the temporal analogue of spatial interfaces between two media, consist of a rapid change of the electromagnetic properties of a material (such as permittivity ε, and permeability μ) while the wave is present in…
View article: Temporal chirp, temporal lensing and temporal routing via space-time interfaces
Temporal chirp, temporal lensing and temporal routing via space-time interfaces Open
A time interface (a rapid change of the constitutive parameters of a material in time), applied within an unbounded medium where a wave travels, can enable frequency conversion, and is considered the temporal analogue of a spatial interfac…
View article: Perfect Splitting in Rectangular Waveguide Junctions for Analogue Computing
Perfect Splitting in Rectangular Waveguide Junctions for Analogue Computing Open
It has been recently shown how computing operations such as high-speed switching, routing, and solving partial differential equations can be performed by exploiting perfect splitting of electromagnetic waves in networks of waveguides from …
View article: Plasmonic sensing using Babinet’s principle
Plasmonic sensing using Babinet’s principle Open
Developing methods to sense local variations in properties of nearby materials, such as their refractive index and thickness, are important in numerous fields including chemistry and biomedical applications. Localized surface plasmons (LSP…
View article: Time derivatives via interconnected waveguides
Time derivatives via interconnected waveguides Open
View article: Quantum Antireflection Temporal Coatings: Quantum State Frequency Shifting and Inhibited Thermal Noise Amplification
Quantum Antireflection Temporal Coatings: Quantum State Frequency Shifting and Inhibited Thermal Noise Amplification Open
The quantum optical response of antireflection temporal coatings (ATCs), that is, matching temporal layers that suppress the generation of backward waves in temporal boundaries, is investigated. The results reveal that quantum ATCs are cha…
View article: Development of a Novel Design of Microfluidic Impedance Cytometry for Improved Sensitivity and Cell Identification
Development of a Novel Design of Microfluidic Impedance Cytometry for Improved Sensitivity and Cell Identification Open
A long-standing issue for microfluidic impedance cytometry devices is the accuracy in determining the size of cells during counting and measurements. In this paper, we introduce a novel design that produces a homogeneous electric field in …
View article: Time derivatives via interconnected waveguides
Time derivatives via interconnected waveguides Open
Electromagnetic wave-based analogue computing has become an interesting computing paradigm demonstrating the potential for high-throughput, low power, and parallel operations. In this work, we propose a technique for the calculation of der…
View article: Plasmonic sensing using Babinet's principle
Plasmonic sensing using Babinet's principle Open
Developing methods to sense local variations in nearby materials, such as their refractive index and thickness, is important in different fields including chemistry and biomedical applications, among others. Localized surface plasmons (LSP…
View article: Feature issue introduction: temporal and spatiotemporal metamaterials
Feature issue introduction: temporal and spatiotemporal metamaterials Open
Temporal modulation of material parameters provides a new degree of freedom for metamaterials, metasurfaces and wave-matter interactions as a whole. In time-varying media the electromagnetic energy may not be conserved, and the time revers…
View article: Holding and amplifying electromagnetic waves with temporal non-Foster metastructures
Holding and amplifying electromagnetic waves with temporal non-Foster metastructures Open
We introduce a mechanism that can both hold and amplify electromagnetic waves by rapidly changing the permittivity of the medium during the wave travel from a positive to a dispersionless (i.e. non-Foster) negative value and then back agai…
View article: Arbitrary order analogue differentiation using transmission line techniques
Arbitrary order analogue differentiation using transmission line techniques Open
View article: Generating photonic hooks using dual-dielectric designs
Generating photonic hooks using dual-dielectric designs Open
Near-field, sub-wavelength, and localized curved light beams, known as photonic hooks [1]-[3], discovered in 2015 [2], have become an area of interest due to their relatively simple design, compactness and potential to be used in a number …
View article: Temporal differentiation by neural network designed multilayer metamaterial
Temporal differentiation by neural network designed multilayer metamaterial Open
View article: Utilizing Petri-Nets to Represent Electromagnetic Waveguide Junction Switching Processes
Utilizing Petri-Nets to Represent Electromagnetic Waveguide Junction Switching Processes Open
View article: Enabling perfect splitting using four-port interconnected rectangular waveguides
Enabling perfect splitting using four-port interconnected rectangular waveguides Open
In recent years we have experienced an increased interest in alternative computing methods such as quantum computing [1], biological computing [2], and analogue computing with metamaterials [3,4].This is due to challenges in terms of tempo…
View article: Near-zero reflection by Parity-time symmetry in rectangular waveguides emulating Epsilon-Near-Zero media
Near-zero reflection by Parity-time symmetry in rectangular waveguides emulating Epsilon-Near-Zero media Open
The ability to tailor the electromagnetic properties of metamaterials and metasurfaces has opened new avenues to manipulate wave-matter interactions [1], [2].One such case is the introduction of materials with values of permittivity/epsilo…
View article: Four-dimensional media: from zero temporal reflections to effective media
Four-dimensional media: from zero temporal reflections to effective media Open
The manipulation of electromagnetic (EM) wave propagation and light-matter interactions have been of interest in multiple disciplines spanning from chemistry, physics, and engineering to optics, materials science and thermodynamics.In this…
View article: Neural Network Design of Multilayer Metamaterial for Temporal Differentiation
Neural Network Design of Multilayer Metamaterial for Temporal Differentiation Open
Controlling wave−matter interactions with metamaterials (MTMs) for the calculation of mathematical operations has become an important paradigm for analogue computing given their ability to dramatically increase computational processing spe…