223 citations · 1.6k across the 54 of their papers we have counts for
57 papers
Resonance-Enhanced Time Reflection at Photonic Temporal Interfaces
Zeyuan Li, Hammam Bahurmuz, Mohamed H. Mostafa +5
Photonic temporal interfaces enable dynamic control of light fields, yet strong time reflection at optical frequencies remains challenging because conventional approaches demand la…
Multi-mode Photonic Time Crystals Based on Time-Modulated Metasurface Waveguides
Z. Li, M. S. Mirmoosa, V. Asadchy +1
Photonic time crystals are electromagnetic media with periodically time-varying parameters, enabling momentum band gaps, parametric amplification, and frequency conversion beyond w…
Photonic Temporal Illusion
Grigorii Ptitcyn, Diego M. Solís, M. S. Mirmoosa +1
Materials with unusual optical properties are central to advanced control of light. Yet, in nature, such materials may be exceedingly rare and often difficult to obtain. To overcom…
Non-Foster Photonic Time Crystals
Zeyuan Li, Mohammad Sajjad Mirmoosa, Silvio Hrabar +2
Photonic time crystals (PhTCs) are spatially uniform media whose material parameters vary periodically in time, opening momentum bandgaps within which the fields of electromagnetic…
Photonic time crystals assisted by quasi-bound states in the continuum
P. Garg, E. Almpanis, L. Zimmer +8
Photonic time crystals (PTCs) are characterized by the rapid modulation of the material properties in time, causing a momentum bandgap for light. However, the observation of these…
Broadband amplification of light through adiabatic spatiotemporal modulation
M. H. Mostafa, M. S. Mirmoosa, E. Galiffi +3
Four-dimensional optics leverages the simultaneous control of materials in space and time to manipulate light. A key challenge in experimentally realizing many intriguing phenomena…
Temporal Interface in Dispersive Hyperbolic Media
Grigorii Ptitcyn, Diego Martinez Solís, Mohammad Sajjad Mirmoosa +1
Spatial inhomogeneity, temporal modulation, and engineered anisotropy of parameters of electromagnetic media offer numerous opportunities for manipulating light-matter interaction…
Electromagnetic Time Interfaces in Wire Media: Innovations for Subwavelength Imaging
Constantin Simovski, Mohammad Sajjad Mirmoosa, Sergei Tretyakov
In this work, we theoretically study temporal interfaces between media with strong spatial dispersion and dielectrics. In particular, we consider a temporal discontinuity that tran…
Quantum uncertainty of optical coherence
Martti Hanhisalo, Mohammad Sajjad Mirmoosa, Tero Setälä +2
Light is known to exhibit quantum uncertainty in terms of its amplitude, phase, and polarization. However, quantum uncertainty related to coherence, which is also a fundamental phy…
Inverse-designed dispersive time-varying nanostructures
Puneet Garg, Jan David Fischbach, Aristeidis G. Lamprianidis +5
Time-varying nanostructures allow us to control the spatial and temporal properties of light. The temporal modulation of the nanostructures constitutes an additional degree of free…
Photonic time crystals: Theory and applications
M. M. Asgari, P. Garg, X. Wang +3
This tutorial offers a comprehensive overview of photonic time crystals - artificial materials whose electromagnetic properties are periodically modulated in time at scales compara…
Time-Varying Wireless Power Transfer Systems for Improving Efficiency
X. Wang, I. Krois, N. Ha-Van +4
Conventional wireless power transfer systems are linear and time-invariant, which sets fundamental limitations on their performance, including a tradeoff between transfer efficienc…
Quantum Theory of Wave Scattering from Electromagnetic Time Interfaces
M. S. Mirmoosa, T. Setälä, A. Norrman
Modulating macroscopic parameters of materials in time offers innovative avenues for manipulating electromagnetic waves. Due to such enticing prospects, the general research subjec…
Expanding momentum bandgaps in photonic time crystals through resonances
X. Wang, P. Garg, M. S. Mirmoosa +3
The realization of photonic time crystals is a major opportunity but also comes with significant challenges. The most pressing one, potentially, is the requirement for a substantia…
Electromagnetic Effects in Anti-Hermitian Media with Gain and Loss
L. Freter, M. S. Mirmoosa, A. Sihvola +2
Incorporating both gain and loss into electromagnetic systems provides possibilities to engineer effects in unprecedented ways. Concerning electromagnetic effects in isotropic medi…
Time Interfaces in Bianisotropic Media
M. S. Mirmoosa, M. H. Mostafa, A. Norrman +1
Wave phenomena in bianisotropic media have been broadly scrutinized in classical electrodynamics, as these media offer additional degrees of freedom to engineer electromagnetic wav…
Time-modulated circuits and metasurfaces for emulating arbitrary transfer functions
Grigorii Ptitcyn, Mohammad Sajjad Mirmoosa, Silvi Hrabar +1
Temporal modulation unlocks possibilities to dynamically control and modify the response of electromagnetic systems. Employing explicit dependencies of circuit or surface parameter…
Tutorial on basics of time-varying electromagnetic systems and circuits
G. Ptitcyn, M. S. Mirmoosa, A. Sotoodehfar +1
During the last decade, possibilities to realize new phenomena and create new applications by varying system properties in time have gained increasing attention in many research fi…
Controlling surface waves with temporal discontinuities of metasurfaces
Xuchen Wang, Mohammad Sajjad Mirmoosa, Sergei A. Tretyakov
In this paper, we investigate the scattering of surface waves on reactive impedance boundaries when the surface impedance undergoes a sudden change in time. We report three exotic…
Metasurface-Based Realization of Photonic Time Crystals
Xuchen Wang, Mohammad Sajjad Mirmoosa, Viktar S. Asadchy +3
Photonic time crystals are artificial materials whose electromagnetic properties are uniform in space but periodically vary in time. The synthesis of such materials and experimenta…
Emulating Bianisotropic Coupling Through Coherent Illumination
F. S Cuesta, M. S. Mirmoosa, S. A. Tretyakov
One of the main advantages of reciprocal bianisotropic metasurfaces is their capability to produce asymmetric scattering depending from which side they are illuminated and on the h…
Spin-dependent phenomena at chiral temporal interfaces
M. H. Mostafa, M. S. Mirmoosa, S. A. Tretyakov
Temporally varying electromagnetic media have been extensively investigated recently to unveil new means for controlling light. However, spin-dependent phenomena in such media have…
Scattering from spheres made of time-varying and dispersive materials
G. Ptitcyn, A. G. Lamprianidis, T. Karamanos +8
Exploring the interaction of light with time-varying media is an intellectual challenge that, in addition to fundamental aspects, provides a pathway to multiple promising applicati…
Coherently time-varying metasurfaces
M. H. Mostafa, A. Diaz-Rubio, M. S. Mirmoosa +1
Known coherent metasurfaces control interference of waves of a given frequency with other coherent waves at the same frequency, either illuminating from a different direction or cr…