Results 41 to 50 of about 4,283,891 (213)

Control of amplitude homogeneity in coherent Ising machines with artificial Zeeman terms

open access: yesCommunications Physics, 2022
Coherent Ising machines represent an optical approach to unconventional computing that fail if inhomogeneity of the analog spins’ amplitude becomes too great.
Yoshitaka Inui   +4 more
doaj   +1 more source

On-Fiber Photonic Computing

open access: yes, 2023
In the 1800s, Charles Babbage envisioned computers as analog devices. However, it was not until 150 years later that a Mechanical Analog Computer was constructed for the US Navy to solve differential equations.
Yang, Mingran   +2 more
core   +1 more source

Metamaterials for light rays: ray optics without wave-optical analog in the ray-optics limit [PDF]

open access: yes, 2009
Volumes of sub-wavelength electromagnetic elements can act like homogeneous materials: metamaterials. In analogy, sheets of optical elements such as prisms can act ray-optically like homogeneous sheet materials.
Hamilton, A.C., Courtial, J.
core   +1 more source

Analog Computing with Metatronic Circuits

open access: yes, 2020
Analog photonic solutions offer unique opportunities to address complex computational tasks with unprecedented performance in terms of energy dissipation and speeds, overcoming current limitations of modern computing architectures based on electron flows
Mario Miscuglio (3330321)   +7 more
core   +1 more source

Optical differentiator based on a trilayer metal-dielectric structure

open access: yesКомпьютерная оптика, 2021
Optical properties of a resonant trilayer metal-dielectric-metal (MDM) structure that consists of an upper metal layer, a dielectric layer, and a metal substrate are investigated.
A.I. Kashapov   +4 more
doaj   +1 more source

Wavelength-independent optical fully differential operation based on the spin–orbit interaction of light

open access: yesAPL Photonics, 2020
Optical technology may provide important architectures for future computing, such as analog optical computing and image processing. Compared with traditional electric operation, optical operation has shown some unique advantages including faster ...
Shanshan He   +5 more
doaj   +1 more source

A single inverse-designed photonic structure that performs parallel computing

open access: yesNature Communications, 2021
Optical analog computing has so far been mostly limited to solving a single instance of a mathematical problem at a time. Here, the authors show that the linearity of the wave equation allows to solve several problems simultaneously, and demonstrate it ...
Miguel Camacho   +2 more
doaj   +1 more source

Performance optimization of free-space optical communication protocols based on results from FSO demonstrations [PDF]

open access: yes, 2007
The mobile free-space optical channel mainly suffers from relatively long link outages, produced by short-term blockings of the line-of-sight (obstacles, clouds), pointing- and tracking-errors or deep signal-fades caused by index of refraction turbulence
Bernhard Epple, Epple, Bernhard
core   +1 more source

Switchable and Simultaneous Spatiotemporal Analog Computing

open access: yes, 2021
Optical wave-based computing has enabled the realization of real-time information processing in both space and time domains. In the past few years, analog computing has experienced rapid development but mostly for a single function. Motivated by parallel
Ali Momeni (7296113)   +2 more
core   +1 more source

Physical Computing: Unifying Real Number Computation to Enable Energy Efficient Computing

open access: yesJournal of Low Power Electronics and Applications, 2021
Physical computing unifies real value computing including analog, neuromorphic, optical, and quantum computing. Many real-valued techniques show improvements in energy efficiency, enable smaller area per computation, and potentially improve algorithm ...
Jennifer Hasler, Eric Black
doaj   +1 more source

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