Results 141 to 150 of about 2,542,170 (251)

Ultrasensitive Optical Sensing Based on Non-Hermitian Metasurfaces

, 2019
We present here an ultrasensitive optical sensing technique based on the parity-time (PT)-symmetric non-Hermitian metasurfaces. The system is composed of a pair of active and passive metasurfaces with the subtle gain-loss balance. Specifically, these two
Chen, Pai-Yen, Farhat, Mohamed
core   +1 more source

Spatially Uniform and Defect‐Tolerant Plasmonic Responses in 3D Printed Gold Nanoparticle Assemblies

Laser &Photonics Reviews, EarlyView.
We introduce 3D nanoprinting of gold nanoparticle assemblies and show that their broad optical responses remain reproducible despite structural disorder. This robustness is attributed to ensemble‐averaged plasmonic responses from many local coupling regions.
Vasanthan Devaraj, Sunghyun Kwak, Hyeongjip Kim, Sang‐Keun Sung, Jong‐Min Lee, Thomas Zentgraf, Won‐Geun Kim   +6 more
wiley   +1 more source

An angular dispersion-free resonant metasurface for quantum photon pair generation

EPJ Applied Metamaterials
Metasurfaces supporting high quality factor resonances have shown the ability to enhance spontaneous parametric down-conversion (SPDC) process and are therefore seen as a promising platform for entangled quantum photon pair generation.
Wu Shuhao, Pusino Vincenzo, Cumming David R.S.   +2 more
doaj   +1 more source

Dual‐Metasurface‐Integrated Fiber Array for Bidirectional Cylindrical‐Vector‐Beam Multiplexed Communication Using Off‐Axis Spatial Manipulation

Laser &Photonics Reviews, EarlyView.
A dual‐layer metasurface is integrated on a fiber‐array facet to realize compact, plug‐and‐play free‐space optical links with cylindrical vector beam (CVB) space‐division multiplexing. An optimized off‐axis collimation layer steers multiple channels, while a Dammann vortex layer performs polarization–topology conversion for bidirectional CVB (de ...
Xipeng Lu, Jinke Li, Jin Tae Kim, Shaoyan Li, Hongliang Li, Duk‐Yong Choi, Sang‐Shin Lee   +6 more
wiley   +1 more source

Characterization of Orbital Angular Momentum Quantum States Empowered by Metasurfaces

Twisted photons can in principle carry a discrete unbounded amount of orbital angular momentum (OAM), which are of great significance for quantum communication and fundamental tests of quantum theory.
Jianguo Tian (4243099), Yongnan Li (8284962), Hua Cheng (317084), Shuangyin Huang (15366385), Lieyu Chen (15366382), Hui-Tian Wang (2059783), Qiang Wang (32383), Shuqi Chen (3760252), Duk-Yong Choi (1512004), Min Wang (21070), Chenghou Tu (8284959)   +10 more
core   +1 more source

Optical Stimulation and Monitoring of the Peripheral Nervous System: Perspectives and Challenges Toward Clinical Translation

Laser &Photonics Reviews, EarlyView.
Optical neuromodulation with IR light allows stimulation of the PNS without the need for physical contact with the target nerve or without requiring any genetic modification. The clinical translation of this technique will pave the way to the development of neural interfaces for restoring sensory feedback in individuals with limb amputation.
Federica Piccirillo, Sarassunta Ucci, Anna Aliberti, Patrizio Vaiano, Alessia La Rocca, Francesca Angelone, Silvia Pascarella, Pellegrino Lippiello, Maria Concetta Miniaci, Giuseppe Prisco, Michela Russo, Francesco Amato, Deyanira Contartese, Milena Fini, Gianluca Giavaresi, Lucia Martini, Francesco Rosa, Cosimo Gentile, Emanuele Gruppioni, Armando Ricciardi, Andrea Cusano   +20 more
wiley   +1 more source

Nonlinear optics with quantum engineered intersubband metasurfaces

, 2015
We report highly-nonlinear metasurfaces based on combining electromagnetically-engineered plasmonic nanoresonators with quantum-engineered intersubband nonlinearities.
Alu, Andrea, Tymchenko, Mikhailo, Lee, Jongwon, Nookala, Nishant, Boehm, Gerhard, Amann, Marcus-Christian, Belkin, Mikhail A., Demmerle, Frederic   +7 more
core  

From Planar to 3D Nanophotonic Lenses: Advancing Design, Fabrication, and Applications

Laser &Photonics Reviews, EarlyView.
Three‐dimensional nanophotonic lenses are enabled by an integrated workflow that links design parameterization, full‐wave electromagnetic simulation, computational optimization, and freeform fabrication. This Review summarizes how these tools expand optical design freedom beyond a single patterned plane by enriching the local meta‐atom response and ...
Wei Zhu, Lyudmila V. Goncharova, Eric Johlin   +2 more
wiley   +1 more source

Quantum reservoir processing

, 2019
The concurrent rise of artificial intelligence and quantum information poses an opportunity for creating interdisciplinary technologies like quantum neural networks.
Opala, A., Liew, T.C.H., Ghosh, Sanjib, Ghosh, S., Opala, Andrzej, Matuszewski, M., Paterek, T., Liew, Timothy C. H., Paterek, Tomasz, Matuszewski, Michał   +9 more
core   +1 more source

Reconfigurable Geometric Phase Matching by Multilayered Nonlinear Thin‐Film Crystals

Laser &Photonics Reviews, EarlyView.
The concept of geometric phase matching is demonstrated as a dynamically reconfigurable approach for tunable nonlinear wave mixing in multilayered nonlinear thin‐film crystals. Experimental results reveal full modulation in a bilayer structure and near‐perfect spin‐selective phase matching of second‐harmonic generation in an eight‐layer configuration ...
Danielle Ben‐Haim, Mai Tal, Xiaoxi Xu, Tal Ellenbogen   +3 more
wiley   +1 more source