Results 131 to 140 of about 2,542,170 (251)

Pancharatnam–Berry Phase Driven by Electrical Restructuring of Liquid Crystal Polarization Grating Period

Laser &Photonics Reviews, EarlyView.
Electrically controlled liquid‐crystal twist diffraction element based on the Pancharatnam–Berry phase enables switchable structural periodicity and simultaneous generation of orthogonal circularly polarized coherent waves for multifunctional planar photonic devices.
Elena Melnikova, Katsiaryna Pantsialeyeva, Alexei Tolstik, Veranika Stanevich, Daminika Dashkevich, Anatoli Murauski, Alexander Muravsky, Alina Karabchevsky   +7 more
wiley   +1 more source

Chiral Emission from Optical Metasurfaces and Metacavities

Advanced Photonics Research
Chiral emission exhibiting a large degree of circular polarization (DCP) is important in diverse applications ranging from displays and optical storage to optical communication, bioimaging, and medical diagnostics.
Jungho Han, Heejoo Jang, Yeonsoo Lim, Seongheon Kim, Jeheon Lee, Young Chul Jun   +5 more
doaj   +1 more source

Resonant States Reveal Strong Light–Matter Coupling in Nanophotonic Cavities

Laser &Photonics Reviews, EarlyView.
Photonic resonant states reveal characteristics of coupled light–matter systems that would otherwise be hidden by damping. Their trajectories (when tuning the optical resonance) undergo a qualitative change at the onset of strong coupling: They start swapping positions.
Jan David Fischbach, Sergei Gladyshev, Adrià Canós Valero, Markus Nyman, Thomas Weiss, Carsten Rockstuhl   +5 more
wiley   +1 more source

Long-range quantum emitter interactions mediated by a nonlocal metasurface: Application to qubit-qubit entanglement

Physical Review Research
Scalable quantum technologies demand long-range interactions between many distant quantum emitters (QEs). We introduce nonlocal metasurfaces supporting bound states in the continuum (BICs) as a promising platform to achieve this goal.
Hannah Riley, Emmanuel Lassalle, Diego Romero Abujetas, Adam Stokes, Ramon Paniagua-Dominguez, Ahsan Nazir   +5 more
doaj   +1 more source

Revealing the Resonant Physics of Open Photonic Time Crystals

Laser &Photonics Reviews, EarlyView.
ABSTRACT Photonic time crystals (PTCs) are media whose permittivity is modulated periodically in time, enabling momentum bandgaps and parametric amplification of light. Their realization at the nanoscale can revolutionize the study of light‐matter interactions.
Adrià Canós Valero, Sergei Gladyshev, David Globosits, Stefan Rotter, Egor A. Muljarov, Thomas Weiss   +5 more
wiley   +1 more source

Metasurface‐Based Polarization‐Controlled Generation of 128‐Dimensional Vector Vortex Combs

Laser &Photonics Reviews, EarlyView.
The generation and continuous control of 128‐dimensional vector vortex combs using a single metasurface is reported. This work creates a class of structured light that uniquely integrates ultrahigh dimensionality with vector properties, and represents a crucial step toward on‐chip, reconfigurable generators for ultrahigh‐dimensional vector structured ...
Jiaqi Wang, Wenxi Wang, Wen Chen
wiley   +1 more source

Grating‐Lens Empowered Metafiber for Large‐Angle Light Collection With 3D Nanoprinted Structures

Laser &Photonics Reviews, EarlyView.
A grating‐lens‐based Metafiber enables efficient light coupling into single‐mode fibers at large incidence angles. By combining diffraction and focusing on the fiber facet using a 3D nanoprinted holographic structure, light is selectively coupled only at specific angles while suppressing unwanted signals. This approach achieves high coupling efficiency
Jun Sun, Markus A. Schmidt
wiley   +1 more source

Metasurface-tuned light-matter interactions for high-performance photodetectors

Fundamental Research
Photodetection, the conversion of optical signals to electrical signals, plays a pivotal role in optical communication, sensing, and computing. However, with the advent of novel applications such as quantum computing, intelligent driving, high-speed ...
Guanyu Zhang, Chang Xu, Dong Sun, Qinsheng Wang, Guowei Lu, Qihuang Gong   +5 more
doaj   +1 more source

Theory of Supercritical Coupling and Generalized Bound States in the Continuum

Laser &Photonics Reviews, EarlyView.
We develop a general theory of supercritical coupling and generalized bound states in the continuum (gBICs), revealing how interference between radiative and absorptive channels enables quality factors beyond conventional material‐loss limits. The framework unifies non‐Hermitian mode coupling, causality‐driven reactive interactions, and interference ...
Sergio Balestrieri, Bruno Miranda, Silvia Romano, Gianluigi Zito   +3 more
wiley   +1 more source

Photon pair generation from quantum optical metasurfaces

This doctoral thesis addresses the problem of photon pair generation via spontaneous parametric down-conversion (SPDC) in flat nonlinear materials, namely films and metasurfaces.
Santiago-Cruz, Tomás
core   +1 more source