Results 121 to 130 of about 128,917 (278)

Measurement of the Entangled Two‐Photon Absorption Cross‐Sections of 4‐Aminoazobenzene

open access: yesChemPhysChem, Volume 27, Issue 9, 14 May 2026.
Using 4‐aminoazobenzene with extremely low one‐photon attenuation in the EP band, we isolated entangled two‐photon absorption from linear loss by separating correlated and uncorrelated photon counts. The resulting σE is ≈1018 larger than δ(2) (at ≈108 photons·s–1·cm–2), while remaining ≈107 smaller than δ(1).
Sena Hashimoto   +3 more
wiley   +1 more source

Symbol‐Level GRAND‐Assisted Detection for Polar‐Coded Spatial Modulation in MIMO Systems

open access: yesInternational Journal of Communication Systems, Volume 39, Issue 7, 10 May 2026.
This research presents an integrated polar‐coded spatial modulation (PCSM) transceiver scheme for MIMO transmission over Rayleigh fading channels. The proposed architecture employs linear spatial signal processing for antenna and symbol estimation, followed by symbol‐level guessing random additive noise decoding (symbol‐level GRAND)–assisted detection ...
Abhilasha Gautam   +2 more
wiley   +1 more source

UAV-Assisted Network Coded Cooperation by Using Height-Dependency Shaping Parameters in Nakagami-m Faded Channel

open access: yesIEEE Access
In this paper, we propose a height-dependency shaping parameter ( $m$ ) and a height-dependency path-loss exponent for modelling small-scale Nakagami- $m$ fading and a large-scale path-loss model for unmanned aerial vehicle (UAV)-assisted network coded ...
Pankaj Kumar, Sudhan Majhi
doaj   +1 more source

Iterative Detection of Diagonal Block Space Time Trellis Codes, TCM and Reversible Variable Length Codes for Transmission over Rayleigh Fading Channels

open access: yes, 2004
Iterative detection of Diagonal Block Space Time Trellis Codes (DBSTTCs), Trellis Coded Modulation (TCM) and Reversible Variable Length Codes (RVLCs) is proposed.
Guo, F., Hanzo, L., Ng, S. X.
core  

Imaging of Biphoton States: Fundamentals and Applications

open access: yesAdvanced Functional Materials, Volume 36, Issue 40, 18 May 2026.
Quantum states of two photons exhibit a rich polarization and spatial structure, which provides a fundamental resource of strongly correlated and entangled states. This review analyzes the physics of these intriguing properties and explores the various techniques and technologies available to measure them, including the state of the art of their ...
Alessio D'Errico, Ebrahim Karimi
wiley   +1 more source

Bio‐Inspired Magnetically Tunable Structural Colors from Elliptical Self‐Assembled Block Copolymer Microparticles

open access: yesAdvanced Functional Materials, Volume 36, Issue 38, 11 May 2026.
Cephalopod‐inspired photonic microparticles with dynamic structural coloration are fabricated via confined self‐assembly of linear block copolymers into ellipsoids containing stacked lamellae. Embedded superparamagnetic nanoparticles enable rapid magnetic alignment, restoring vivid, angle‐dependent color.
Gianluca Mazzotta   +8 more
wiley   +1 more source

Living Hydrogels: Harnessing Microorganism–Material Synergy for Next‐Generation Therapeutics

open access: yesAdvanced Science, Volume 13, Issue 25, 4 May 2026.
 . ABSTRACT Microorganism‐based therapies, particularly those utilizing probiotics, have emerged as a powerful biomedical strategy owing to their inherent living functionalities. These living systems can dynamically interact with host environments and self‐regulate their activity, offering superior adaptability, prolonged functionality, and ...
Shuifang Mao   +3 more
wiley   +1 more source

A Comparison Between Recursive Least-Squares (RLS) and Extended Recursive Least-Squares (E-RLS) for Tracking Multiple Fast Time Variation Rayleigh Fading Channel

open access: yesAl-Khawarizmi Engineering Journal, 2017
In order to select the optimal tracking of fast time variation of multipath fast time variation Rayleigh fading channel, this paper focuses on the recursive least-squares (RLS) and Extended recursive least-squares (E-RLS) algorithms and reaches the ...
Ali Salah Mahdi
doaj  

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