The limits of multiplexing quantum and classical channels: Case study of a 2.5 GHz discrete variable quantum key distribution system
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DOI: 10.1063/5.0060232
Abstract: Network integration of quantum key distribution is crucial for its future widespread deployment due to the high cost of using optical fibers dedicated for the quantum channel, only. We studied the performance of a system… read more here.
Keywords: classical channels; discrete variable; system; key distribution ... See more keywords
Review of discrete variable topology optimization by sequential approximate integer programming
Sign Up to like & getrecommendations! Published in 2025 at "Engineering Optimization"
DOI: 10.1080/0305215x.2024.2445653
Abstract: This article reviews the development of discrete-variable topology optimization using sequential approximate integer programming (SAIP). Beginning with an analysis of the limitations of traditional pixel-based material distribution topology optimization methods under continuous variables, a discussion… read more here.
Keywords: discrete variable; sequential approximate; topology optimization; topology ... See more keywords
Multi-indexed Orthogonal Polynomials of a Discrete Variable and Exactly Solvable Birth and Death Processes
Sign Up to like & getrecommendations! Published in 2025 at "Progress of Theoretical and Experimental Physics"
DOI: 10.1093/ptep/ptaf041
Abstract: We present the case-(1) multi-indexed orthogonal polynomials of a discrete variable for 8 types ((dual)(q-)Hahn, three kinds of q-Krawtchouk and q-Meixner). Based on them and the case-(1) multi-indexed orthogonal polynomials of Racah, q-Racah, Meixner, little… read more here.
Keywords: discrete variable; multi indexed; indexed orthogonal; orthogonal polynomials ... See more keywords
Design, Modeling, Evaluation, and Control of a Compact Discrete Variable Stiffness Actuator
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DOI: 10.1115/1.4069904
Abstract: This paper introduces a novel compact discrete variable stiffness actuator, distinguished by its design topology enabling compactness and independent stiffness adjustment regardless of position, without relying on complex stiffness tuning mechanisms. The compactness is achieved… read more here.
Keywords: compact discrete; discrete variable; actuator; variable stiffness ... See more keywords