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We present a new method for the spectral characterization of pulsed twin beam sources in the high gain regime, using cascaded stimulated emission. We show an implementation of this method for a ppKTP spontaneous parametric down-conversion…

We study theoretically the full counting statistics of electron transport through side-coupled double quantum dot (QD) based on an efficient particle-number-resolved master equation. It is demonstrated that the high-order cumulants of…

介观与纳米尺度物理 · 物理学 2013-10-02 Hai-Bin Xue

Almost-dispersionless pulse transfer between the extremal masses of a uniform harmonic spring-mass chain of arbitrary length can be induced by suitably modifying two masses and their spring's elastic constant at both extrema of the chain.…

经典物理 · 物理学 2018-04-25 Ruggero Vaia

The double neutron/proton ratio of nucleon emissions taken from two reaction systems using four isotopes of the same element, namely, the neutron/proton ratio in the neutron-rich system over that in the more symmetric system, has the…

核理论 · 物理学 2009-11-11 Bao-An Li , Lie-Wen Chen , Gao-Chan Yong , Wei Zuo

We characterize the practical photon-counting receiver in optical scattering communication with finite sampling rate and electrical noise. In the receiver side, the detected signal can be characterized as a series of pulses generated by…

信息论 · 计算机科学 2017-03-14 Difan Zou , Chen Gong , Zhengyuan Xu

This letter proposes a targeted-subharmonic-eliminating pulse density modulation (TSE-PDM) method for SS- compensated WPT systems. By designing a noise transfer function with notch characteristics, the subharmonic components which excite…

系统与控制 · 电气工程与系统科学 2025-09-03 Songyan Li , Hongchang Li

China Spallation Neutron Source (CSNS) is the first high-performance pulsed neutron source in China, which will meet the increasing fundamental research and technique applications demands domestically and overseas. A new distributed data…

数据分析、统计与概率 · 物理学 2016-08-17 H. L. Tian , J. R. Zhang , L. L. Yan , M. Tang , L. Hu , D. X. Zhao , Y. X. Qiu , H. Y. Zhang , J. Zhuang , R. Du

Anomalous transport processes in which the variance of the distance travelled does not necessarily increase linearly with time are modelled using the formalism of continuous time random walks. We compute particle propagators which have the…

天体物理学 · 物理学 2011-05-23 B. R. Ragot , J. G. Kirk

The early 1990s saw the first useful application of pulsed neutron spectroscopy to the study of excitations in low dimensional magnetic systems, with Roger Cowley as a key participant in important early experiments. Since that time the…

强关联电子 · 物理学 2020-08-26 Stephen E. Nagler , D. Alan Tennant

The differential rates and emissivities of neutrino pairs from an equilibrium plasma are calculated for the wide range of density and temperature encountered in astrophysical systems. New analytical expressions are derived for the…

天体物理学 · 物理学 2009-11-07 Sasa Ratkovic , Sharada Iyer Dutta , Madappa Prakash

This paper introduces in full detail a methodology for the measurement of neutron yield and the necessary efficiency calibration, to be applied to the intensity measurement of neutron bursts where individual neutrons are not resolved in…

仪器与探测器 · 物理学 2011-10-13 Ariel Tarifeño-Saldivia , Roberto E. Mayer , Cristian Pavez , Leopoldo Soto

This chapter provides a review of microscopic theories of pairing in nuclear systems and neutron stars. Special attention is given to the mean-field BCS theory and its extensions to include effects of polarization of the medium and…

核理论 · 物理学 2016-11-09 Armen Sedrakian , John W. Clark

Efficient neutron transport is a key ingredient to the performance of ultracold neutron (UCN) sources, important to meeting the challenges placed by high precision fundamental physics experiments. At the Paul Scherrer Institute's UCN source…

仪器与探测器 · 物理学 2022-06-22 G. Bison , M. Daum , K. Kirch , B. Lauss , D. Ries , P. Schmidt-Wellenburg , G. Zsigmond

This paper introduces the use of statistical distributions based on transport differential equations for clear distinction of transport modes within transient kinetic experiments. More specifically,novel techniques are developed for the…

应用统计 · 统计学 2025-01-08 M. Ross Kunz , Debtanu Maiti , Gregory Yablonsky , Rebecca Fushimi

Microscopic theory of counting statistics of electrical noise is reviewed. We discuss a model of passive charge detector based on current fluctuations coupled to a spin, and its relation with the theory of photon counting in quantum optics.…

介观与纳米尺度物理 · 物理学 2007-05-23 L. S. Levitov

Astrophysical observations originate from matter that interacts with radiation or transported particles. We develop a pragmatic approximation in order to enable multi-dimensional simulations with basic spectral radiative transfer when the…

天体物理学 · 物理学 2009-06-23 M. Liebendoerfer , S. C. Whitehouse , T. Fischer

Heterogeneous diffusion processes occur in many different fields such as transport in living cells or diffusion in porous media. A characterization of the transport parameters of such processes can be achieved by ensemble-based methods,…

数据分析、统计与概率 · 物理学 2011-10-17 Michael Bauer , Rustem Valiullin , Günter Radons , Jörg Kärger

Coupled mode theory (CMT) is a powerful framework for decomposing interactions between electromagnetic waves and scattering bodies into resonances and their couplings with power-carrying channels. It has widespread use in few-resonance,…

光学 · 物理学 2020-10-22 Hanwen Zhang , Owen D. Miller

An essential metric for the quality of a particle-identification experiment is its statistical power to discriminate between signal and background. Pulse shape discrimination (PSD) is a basic method for this purpose in many nuclear,…

仪器与探测器 · 物理学 2024-05-17 Shubham Dutta , Sayan Ghosh , Satyaki Bhattacharya , Satyajit Saha

We report a theory for analyzing nonlinear DC transport properties of mesoscopic or nanoscopic normal-superconducting (N-S) systems. Special attention was paid such that our theory satisfies gauge invariance. At the linear transport regime…

凝聚态物理 · 物理学 2009-10-31 Jian Wang , Yadong Wei , Hong Guo , Qing-feng Sun , Tsung-han Lin