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Recommendations and illustrations for the evaluation of photonic random number generators

open access: yesAPL Photonics, 2017
The never-ending quest to improve the security of digital information combined with recent improvements in hardware technology has caused the field of random number generation to undergo a fundamental shift from relying solely on pseudo-random algorithms
Joseph D. Hart   +5 more
doaj   +3 more sources

Minimizing frictional irreversibility in a rough-walled tapered bearing with a nanoparticle-enhanced Sutterby lubricant [PDF]

open access: yesScientific Reports
The thermodynamic performance of a tapered roller bearing is governed by the irreversible dissipation within its lubricating film. Minimizing the total entropy generation rate, which arises from fluid friction and heat transfer, is paramount for ...
Yousaf Jazza   +3 more
doaj   +2 more sources

A Dual Entropy-Based Digital Random Number Generator

open access: yesIEEE Access, 2021
This paper introduces the dual-entropy method for oscillator-based digital random number generators (RNG). The standard model for elaborating jitter-based RNG is expanded to account for the sampling time uncertainty.
Hikmet Seha Ozturk, Salih Ergun
doaj   +1 more source

Approximation of Entropy Numbers [PDF]

open access: yesComplex Analysis and Operator Theory, 2019
10 ...
K. P. Deepesh, V. B. Kiran Kumar
openaire   +2 more sources

About the Entropy of a Natural Number and a Type of the Entropy of an Ideal

open access: yesEntropy, 2023
In this article, we find some properties of certain types of entropies of a natural number. We are studying a way of measuring the “disorder” of the divisors of a natural number. We compare two of the entropies H and H¯ defined for a natural number.
Nicuşor Minculete, Diana Savin
doaj   +1 more source

Few generalized entropic relations related to Rydberg atoms

open access: yesScientific Reports, 2022
We calculate the analytical and numerical values of the position space Shannon entropy, momentum space Shannon entropy, and total Shannon entropy, $$S_\rho$$ S ρ , $$S_\gamma$$ S γ , and $$S_T$$ S T , respectively, of free and trapped Rydberg hydrogen ...
Kirtee Kumar, Vinod Prasad
doaj   +1 more source

Entropy generation of nanofluid flow in hexagonal microchannel

open access: yesJournal of Taibah University for Science, 2022
A new model for entropy generation number in hexagonal microchannel is developed going from the equation proposed by Bejan. The effect of Cu, CuO, Al2O3 and TiO2 mixed with pure water inside the microchannel is evaluated via entropy generation analysis ...
Mohamed Omri   +3 more
doaj   +1 more source

Entropy-stable schemes in the low-Mach-number regime: Flux-preconditioning, entropy breakdowns, and entropy transfers [PDF]

open access: yesJournal of Computational Physics, 2022
Entropy-Stable (ES) schemes, specifically those built from [Tadmor \textit{Math. Comput.} 49 (1987) 91], have been gaining interest over the past decade, especially in the context of under-resolved simulations of compressible turbulent flows using high-order methods.
Ayoub Gouasmi   +2 more
openaire   +3 more sources

Bounds on the entanglement entropy by the number entropy in non-interacting fermionic systems

open access: yesSciPost Physics, 2020
Entanglement in a pure state of a many-body system can be characterized by the R\'enyi entropies $S^{(\alpha)}=\ln\textrm{tr}(\rho^\alpha)/(1-\alpha)$ of the reduced density matrix $\rho$ of a subsystem.
Maximilian Kiefer-Emmanouilidis, Razmik Unanyan, Jesko Sirker, Michael Fleischhauer
doaj   +1 more source

Entropy of a quantum channel [PDF]

open access: yes, 2020
The von Neumann entropy of a quantum state is a central concept in physics and information theory, having a number of compelling physical interpretations.
Gour, Gilad, Wilde, Mark M.
core   +3 more sources

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