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Reconfigurable Intelligent Surface (RIS) can create favorable multipath to establish strong links that are useful in millimeter wave (mmWave) communications. While previous works used Rayleigh or Rician fading, we use the fluctuating…

信息论 · 计算机科学 2020-11-10 Hongyang Du , Jiayi Zhang , Julian Cheng , Zhaohua Lu , Bo Ai

We investigate radio-frequency (rf) reflectometry in a tunable carbon nanotube double quantum dot coupled to a resonant circuit. By measuring the in-phase and quadrature components of the reflected rf signal, we are able to determine the…

介观与纳米尺度物理 · 物理学 2012-10-16 S. J. Chorley , J. Wabnig , Z. V. Penfold-Fitch , K. D. Petersson , J. Frake , C. G. Smith , M. R. Buitelaar

Capacitated k-median is one of the few outstanding optimization problems for which the existence of a polynomial time constant factor approximation algorithm remains an open problem. In a series of recent papers algorithms producing…

数据结构与算法 · 计算机科学 2018-09-18 Marek Adamczyk , Jarosław Byrka , Jan Marcinkowski , Syed M. Meesum , Michał Włodarczyk

Within the kt-factorization approach, we evaluate the impact factor of the transition gamma* -> rhoT taking into account the twist 3 contributions. We show that a gauge invariant expression is obtained with the help of QCD equations of…

高能物理 - 唯象学 · 物理学 2009-09-23 I. V. Anikin , D. Yu. Ivanov , B. Pire , L. Szymanowski , S. Wallon

Motivated by the $1/N_c$ expansion, we study a simple model in which the pi-K scattering amplitude is the sum of a current-algebra contact term and resonance pole exchanges. This phenomenological model is crossing symmetric and, when a…

高能物理 - 唯象学 · 物理学 2008-11-26 D. Black , A. H. Fariborz , F. Sannino , J. Schechter

In the k-center problem, given a metric space V and a positive integer k, one wants to select k elements (centers) of V and an assignment from V to centers, minimizing the maximum distance between an element of V and its assigned center.…

数据结构与算法 · 计算机科学 2016-08-08 Cristina G. Fernandes , Samuel P. de Paula , Lehilton L. C. Pedrosa

Microwave kinetic inductance detector (MKID) provides a way to build large ground based sub-mm instruments such as NIKA and A-MKID. For such instruments, therefore, it is important to understand and characterize the response to ensure good…

天体物理仪器与方法 · 物理学 2016-02-15 L. Bisigello , S. J. C. Yates , V. Murugesan , J. J. A. Baselmans , A. M. Baryshev

In gate-based dispersive sensing, the response of a resonator attached to a quantum dot gate is detected by a reflected radio-frequency signal. This enables fast readout of spin qubits and tune up of arrays of quantum dots, but comes at the…

In this paper we analyze the joint rate distortion function (RDF), for a tuple of correlated sources taking values in abstract alphabet spaces (i.e., continuous) subject to two individual distortion criteria. First, we derive structural…

信息论 · 计算机科学 2021-05-11 Evagoras Stylianou , Charalambos D. Charalambous , Themistoklis Charalambous

The performance of a multiuser communication system with single-antenna transmitting terminals and a multi-antenna base-station receiver is analytically investigated. The system operates under independent and non-identically distributed…

信息论 · 计算机科学 2016-10-27 Nikolaos I. Miridakis , Theodoros A. Tsiftsis , Corbett Rowell

The modeling of coupled-channel effects has become increasingly important due to the availability of highly precise data for a large variety of hadronic (re)scattering processes. The K-matrix is a powerful, yet comparatively simple, method…

高能物理 - 唯象学 · 物理学 2026-01-16 Nils Hüsken , Eric S. Swanson , Adam Szczepaniak

The $k$-center problem is a classic facility location problem, where given an edge-weighted graph $G = (V,E)$ one is to find a subset of $k$ vertices $S$, such that each vertex in $V$ is "close" to some vertex in $S$. The approximation…

数据结构与算法 · 计算机科学 2014-01-14 Tomasz Kociumaka , Marek Cygan

In this paper, we adopt the $\kappa$-$\mu$ model to characterize the propagation in the sub-THz band. We develop a new exact representation of the sum of squared independent and identically distributed $\kappa$-$\mu$ random variables, which…

信息论 · 计算机科学 2025-08-11 Gustavo Rodrigues de Lima Tejerina , Italo Atzeni

An estimation method of Radio Frequency fingerprint (RFF) based on the physical hardware properties of the nonlinearity and in-phase and quadrature (IQ) imbalance of the transmitter is proposed for the authentication of wireless orthogonal…

信息论 · 计算机科学 2021-04-22 Honglin Yuan , Jiangzhou Wang , Chen Xu , Juping Gu , Qiang Sun , Yan Yan , Zhihua Bao

We describe a consistent approach to factorization of scattering amplitudes for exclusive processes beyond the leading twist approximation. The method involves the Taylor expansion of the scattering amplitude in the momentum space around…

高能物理 - 唯象学 · 物理学 2009-12-23 I. V. Anikin , D. Yu. Ivanov , B. Pire , L. Szymanowski , S. Wallon

In this research, we present a Python-based solution designed to simulate a one-dimensional quantum system that incorporates multiple Dirac $\delta -$% potentials. The primary aim of this research is to investigate the scattering problem…

量子物理 · 物理学 2024-06-04 Erfan Keshavarz , S. Habib Mazharimousavi

Quantum reservoir computing (QRC) is a hardware-implementation-friendly quantum neural network scheme with minimal physical system requirements and a proven advantage over classical counterparts. We use an extension of the positive-P phase…

量子物理 · 物理学 2026-03-19 S. Świerczewski , W. Verstraelen , P. Deuar , T. C. H. Liew , A. Opala , M. Matuszewski

Quantum computing crucially relies on maintaining quantum coherence for the duration of a calculation. Bosonic quantum error correction protects this coherence by encoding qubits into superpositions of noise-resilient oscillator states. In…

The Random K-Satisfiability Problem, consisting in verifying the existence of an assignment of N Boolean variables that satisfy a set of M=alpha N random logical clauses containing K variables each, is studied using the replica symmetric…

无序系统与神经网络 · 物理学 2009-10-28 R. Monasson , R. Zecchina

A new physically based method to estimate hemispheric-directional reflectance factor (HDRF) from lightweight multispectral cameras that have a downwelling irradiance sensor is presented. It combines radiometry with photogrammetric computer…

数据分析、统计与概率 · 物理学 2019-05-10 Klaus Schneider-Zapp , Manuel Cubero-Castan , Dai Shi , Christoph Strecha