Muhammad Khalid
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View article: One Image, All Aberrations: A Universal Framework for Wavefront Correction
One Image, All Aberrations: A Universal Framework for Wavefront Correction Open
Optical aberrations have been explored for decades owing to their important role in many applications, ranging from microscopy, astronomy, and quantum imaging, but also critical to the performance of technologies woven into daily life, fro…
View article: Design of thin-film lithium niobate power splitters and combiners based on multimode interference
Design of thin-film lithium niobate power splitters and combiners based on multimode interference Open
In this paper, the design of low-loss multimode interference (MMI) couplers is reported. The proposed devices can be used as power splitters or combiners and are based on lithium niobate on insulator (LNOI) technology, a promising emerging…
View article: LNOI Wireless Switches Based on Optical Phased Arrays for On-Chip Communication
LNOI Wireless Switches Based on Optical Phased Arrays for On-Chip Communication Open
On-chip optical wireless links are attracting a great deal of interest as they can provide a possible solution to overcome the drawbacks associated with wired connections. In this paper, we propose a new approach for on-chip communication …
View article: Meta‐Magnetic All‐Optical Helicity Dependent Switching of Ferromagnetic Thin Films
Meta‐Magnetic All‐Optical Helicity Dependent Switching of Ferromagnetic Thin Films Open
To address the ever‐increasing need for higher speed and density of information storage, recent developments in ultrafast optical switching have focused on deterministic control of magnetic properties of materials using femtosecond circula…
View article: Influence of the electron spill-out and nonlocality on gap plasmons in the limit of vanishing gaps
Influence of the electron spill-out and nonlocality on gap plasmons in the limit of vanishing gaps Open
We study the effect of electron spill-out and of nonlocality on the propagation of light inside a gap between two semi-infinite metallic regions. We compare the predictions of a local response model taking into account only the spill-out, …
View article: Second-harmonic generation enhancement driven by quantum electron spill-out at metal surfaces
Second-harmonic generation enhancement driven by quantum electron spill-out at metal surfaces Open
Second-order nonlinear optical contributions originate from the angstrom-scale thin layer near the surface of centrosymmetric materials. At such length-scales quantum mechanical effects come into play and could be very crucial for an accur…
View article: Plasmonic quantum effects on single-emitter strong coupling
Plasmonic quantum effects on single-emitter strong coupling Open
Coupling between electromagnetic cavity fields and fluorescent molecules or quantum emitters can be strongly enhanced by reducing the cavity mode volume. Plasmonic structures allow light confinement down to volumes that are only a few cubi…
View article: Numerical Analysis of Nonlocal Optical Response of Metallic Nanoshells
Numerical Analysis of Nonlocal Optical Response of Metallic Nanoshells Open
Nonlocal and quantum effects play an important role in accurately modeling the optical response of nanometer-sized metallic nanoparticles. These effects cannot be described by conventional classical theories, as they neglect essential micr…
View article: Optical properties of plasmonic core-shell nanomatryoshkas: a quantum hydrodynamic analysis
Optical properties of plasmonic core-shell nanomatryoshkas: a quantum hydrodynamic analysis Open
Plasmonic response of the metallic structure characterized by sub-nanometer dielectric gaps can be strongly affected by nonlocal or quantum effects. In this paper, we investigate these effects in spherical Na and Au nanomatryoshka structur…