Results 61 to 70 of about 11,364,385 (285)
Alexandria Engineering JournalIn our work, we have explored the phase space nonlinear coherent-Kerr-cavity nonclassicality and purity loss induced by off-resonant intensity-dependent cavity-qubit interactions under atomic spontaneous-emission dissipation effect. The generation of the
Laila A. Al-Essa +2 more
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Wigner function and the probability representation of quantum states
EPJ Web of Conferences, 2014 The relation of theWigner function with the fair probability distribution called tomographic distribution or quantum tomogram associated with the quantum state is reviewed.
Man’ko Margarita A. +1 more
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Advanced Intelligent Discovery, EarlyView.This study introduces FIRE‐GNN, a force‐informed, relaxed equivariant graph neural network for predicting surface work functions and cleavage energies from slab structures. By incorporating surface‐normal symmetry breaking and machine learning interatomic potential‐derived force information, the approach achieves state‐of‐the‐art accuracy and enables ...
Circe Hsu +5 more
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Application of Wigner distribution function in interferometry
, 2010 碩士威格納分佈函數(Wigner distribution function)能廣泛應用在物理、電機和其它科學領域。本論文將首先對威格納分佈函數的定義做基本介紹，然後再分別推導點光源、平面波、與橫向位置平方成正比的相位訊號、緩慢變化的相位訊號、高斯形式的訊號、薄透鏡、薄物體、和自由空間所對應到的威格納分佈函數。得到的結果將進一步利用光線圖說明其物理意義。我們接著考慮一個球面波被光柵繞射後再前進至觀察面的狀況。藉由完成幾個藕合的威格納分佈函數的運算，觀察面上的威格納分佈函數可被推導出 ...
曾子桓; Tseng, Tzu-huan
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Comment on ‘Wigner function for a particle in an infinite lattice’
New Journal of Physics, 2013 It is pointed out that in a recent paper (2012 New J. Phys. 14 103009) in which a Wigner function for a particle in an infinite lattice (a system described by an unbounded discrete coordinate and its conjugate angle-like momentum) has been introduced, no
João P S Bizarro
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Wigner distribution functions for complex dynamical systems: A path integral approach [PDF]
, 2012 Starting from Feynman’s Lagrangian description of quantum mechanics, we propose a method to construct explicitly the propagator for the Wigner distribution function of a single system.
Dries Sels, F. Brosens, W. Magnus
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Advanced Intelligent Discovery, EarlyView.The authors evaluated six machine‐learned interatomic potentials for simulating threshold displacement energies and tritium diffusion in LiAlO2 essential for tritium production. Trained on the same density functional theory data and benchmarked against traditional models for accuracy, stability, displacement energies, and cost, Moment Tensor Potential ...
Ankit Roy +8 more
wiley +1 more source
Beating the Standard Quantum Limit With Single‐Photon‐Added Coherent States
Advanced Physics Research, EarlyView.The standard quantum limit (SQL) defines how quantum fluctuations of light constrain measurement precision. Here, we show that injecting a single‐photon‐added coherent state and a weak coherent state in the input ports of a Mach–Zehnder interferometer reduces phase uncertainty below the SQL.
Pankaj K. Jha +4 more
wiley +1 more source
Quantum nature of Wigner function for inflationary tensor perturbations
Journal of High Energy Physics, 2020 We study the Wigner function for the inflationary tensor perturbation defined in the real phase space. We compute explicitly the Wigner function including the contributions from the cubic self-interaction Hamiltonian of tensor perturbations.
Jinn-Ouk Gong, Min-Seok Seo
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Reeh-Schlieder defeats Newton-Wigner: On alternative localization schemes in relativistic quantum field theory [PDF]
, 2000 Many of the "counterintuitive" features of relativistic quantum field theory have their formal root in the Reeh-Schlieder theorem, which in particular entails that local operations applied to the vacuum state can produce any state of the entire
Halvorson, Hans
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