发布求助
文献互助 智能选刊 最新文献

Acta Physica Hungarica B) Quantum Electronics最新文献

筛选
英文 中文
Quantum contextuality induced by spin-path entanglement in single-neutrons 单中子自旋路径纠缠诱导的量子情境性
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2009-12-02 DOI: 10.1556/APH.26.2006.1-2.18
Y. Hasegawa, R. Loidl, G. Badurek, S. Filipp, J. Klepp, H. Rauch
{"title":"Quantum contextuality induced by spin-path entanglement in single-neutrons","authors":"Y. Hasegawa, R. Loidl, G. Badurek, S. Filipp, J. Klepp, H. Rauch","doi":"10.1556/APH.26.2006.1-2.18","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.18","url":null,"abstract":"Since Einstein, Podolsky and Rosen suggested in the thirties and nowadays known as an EPR-paradox, non-local correlations between sufficiently separated subsystems have been extensively discussed. From a theoretical point of view, such a non-locality can be interpreted as a consequence of the correlation between commuting observables. A more general concept, i.e. contextuality, compared to non-locality can be introduced to describe striking phenomena predicted by quantum theory. As the first example, a neutron interferometer experiment is presented, where the spin and the path degrees of freedom are used to exhibit the clear violation of a Bell-like inequality. Other aspects of the quantum contextuality is reported, e.g. a flavor of Kochen-Specker-like contradiction in neutron optical experiments. In addition, the quantum state tomography of the Bell states, which are used in the experiments, is shown.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2009-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121610436","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Decoherence modes in neutron interferometry 中子干涉测量中的退相干模式
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.21
R. Bertlmann, Katharina Durstberger, Y. Hasegawa
{"title":"Decoherence modes in neutron interferometry","authors":"R. Bertlmann, Katharina Durstberger, Y. Hasegawa","doi":"10.1556/APH.26.2006.1-2.21","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.21","url":null,"abstract":"We give a short introduction to the topics of decoherence, neutron interferometry and entanglement for single neutrons. We introduce two theoretical modes of decoherence for an entangled two qubit system via special Lindblad generators for the quantum master equation. The experimental realization of the decoherence modes is achieved within neutron interferometry where the decoherence is modeled by fluctuating magnetic fields in the interferometer.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129197799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
CEWQO 2006 — Editorial Note CEWQO 2006 -编辑说明
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.1
E. Balcar, P. Domokos, Helmut Ranch
{"title":"CEWQO 2006 — Editorial Note","authors":"E. Balcar, P. Domokos, Helmut Ranch","doi":"10.1556/APH.26.2006.1-2.1","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.1","url":null,"abstract":"","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126004346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Atomic spin flip loss and spatial decoherence 原子自旋翻转损失与空间退相干
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.8
R. Fermani, S. Scheel, P. Knight
{"title":"Atomic spin flip loss and spatial decoherence","authors":"R. Fermani, S. Scheel, P. Knight","doi":"10.1556/APH.26.2006.1-2.8","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.8","url":null,"abstract":"We present a first-principles derivation of spatial atomic-sublevel decoherence near dielectric and metallic surfaces. We find that for small lateral separations of the atom’s possible positions, the spatial decoherence decreases quadratically with the separation and inversely to the squared atom-surface distance. In view of potential miniaturization of atom optics, we also present preliminary results on spin flips times near a metallic carbon nanotube.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121216132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Generation of photons from vacuum in a cavity with time-dependent eigenfrequency and damping coefficient 具有时变特征频率和阻尼系数的真空腔中光子的产生
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.5
V. Dodonov, A. Dodonov
{"title":"Generation of photons from vacuum in a cavity with time-dependent eigenfrequency and damping coefficient","authors":"V. Dodonov, A. Dodonov","doi":"10.1556/APH.26.2006.1-2.5","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.5","url":null,"abstract":"This is a brief review of recent achievements in the theory of non-stationary Casimir effect in non-ideal cavities and of existing proposals to observe this effect in a laboratory. In this connection, a model of quantum damped oscillator with arbitrary time-dependent frequency and damping coefficient is developed and the influence of different parameters on the photon generation rate is analyzed.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"8 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131435394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
State space geometry of a double-loop interferometer 双回路干涉仪的状态空间几何
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.20
S. Filipp, Y. Hasegawa, R. Loidl, H. Rauch
{"title":"State space geometry of a double-loop interferometer","authors":"S. Filipp, Y. Hasegawa, R. Loidl, H. Rauch","doi":"10.1556/APH.26.2006.1-2.20","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.20","url":null,"abstract":"The phase of a quantum state comprises information about the geometry of the state space. For example, in a magnetic field the spin state of a neutron traces out a particular path in its spherical shaped state space and the geometric phase acquired during this evolution reflects the curvature of this sphere. But the geometric phase is not only restricted to the spinor wave function, also the path of the neutron in an interferometer gives rise to a non trivial momentum state space and consequently to a geometric phase. Experimental results for a non-cyclic evolution are presented that are in agreement with theoretical predictions derived purely from geometrical considerations. By obeying a parallel transport condition dynamical contributions could largely be avoided and the measured phase is of geometric nature.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125971677","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Local field effects and multi-peak spectra in coherent scattering of resonant light in a two-level medium 共振光在两能级介质中相干散射的局部场效应和多峰光谱
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.4
M. Gladush, A. A. Panteleev, V. Roerich
{"title":"Local field effects and multi-peak spectra in coherent scattering of resonant light in a two-level medium","authors":"M. Gladush, A. A. Panteleev, V. Roerich","doi":"10.1556/APH.26.2006.1-2.4","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.4","url":null,"abstract":"Scattering of a laser pulse is considered in a dense medium with account for local field effects. The interacting system of two-level atoms and quantized field modes is studied in the second Born approximation of the Bogolyubov-Born-Green-Kirkwood-Yvon hierarchy of equations for reduced density and correlation operators. The local field correction is derived consistently from the conventional interaction Hamiltonian and adjusted to presence of a dielectric host. Time-dependent spectra of scattered light are calculated both theoretically and numerically Additional sidebands are shown to occur including the cases when the distance between the peaks is proportional to the Rabi frequency.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133710009","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Coherent states on von Neumann lattice and some of their applications 冯·诺依曼晶格上的相干态及其应用
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.11
D. Davidovic, D. Arsenovic
{"title":"Coherent states on von Neumann lattice and some of their applications","authors":"D. Davidovic, D. Arsenovic","doi":"10.1556/APH.26.2006.1-2.11","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.11","url":null,"abstract":"Coherent states on von Neumann lattice, which form complete but not overcomplete set, are orthogonalized using Löwdin procedure and corresponding coefficients arising in orthogonalization are tabulated. So obtained states may be interpreted as eigenstates of operators of optimal unsharp measurement of coordinate and momentum, in a slightly modified von Neumann sense. Using the obtained results the most important statistical characteristics of these operators are calculated on coherent states and compared with corresponding values of standard quantum mechanical operators of coordinate and momentum.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114670989","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Bound and dark photonic states in globular photonic crystals 球形光子晶体中的束缚光子态和暗光子态
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.6
V. Gorelik
{"title":"Bound and dark photonic states in globular photonic crystals","authors":"V. Gorelik","doi":"10.1556/APH.26.2006.1-2.6","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.6","url":null,"abstract":"Experimental and theoretical results of globular photonic crystals properties are presented. By using a simple one-dimensional model of glob-ular photonic crystals, we have obtained dispersion laws for three photonic branches. Dependencies of the group velocity and photonic effective mass from the wave vector have been analyzed. We have established that for photons, corresponding to the edge of photonic branch, velocity of moving goes to zero; such type photons we call slowtons. Coherent emission of slowtons may be generated inside globular photonic crystals if the energy of exciting photons outside the crystal is close to the edges of the forbidden zone (gap) of such a crystal. The conditions of dark and bound states existing and generating in globular photonic crystal have been established.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128877910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 15
Multilevel spin dynamics in time-dependent external magnetic field 时变外磁场中的多能级自旋动力学
Acta Physica Hungarica B) Quantum Electronics Pub Date : 2006-11-01 DOI: 10.1556/APH.26.2006.1-2.7
P. Földi, M. Benedict, F. Peeters
{"title":"Multilevel spin dynamics in time-dependent external magnetic field","authors":"P. Földi, M. Benedict, F. Peeters","doi":"10.1556/APH.26.2006.1-2.7","DOIUrl":"https://doi.org/10.1556/APH.26.2006.1-2.7","url":null,"abstract":"We investigate the dynamics of a ‘giant spin’ with 21 levels (S=10) in time dependent external magnetic field. The model can describe the time evolution of the spin degree of freedom in molecular nanomagnets, and our ‘exact numerical’ treatment of the problem reflects the staircase-like behavior of the experimentally observed magnetization curves. This effect is explained in terms of the level structure, which, at certain values of the external magnetic field, exhibits avoided crossings where the probability of the transitions increases. We show that the multilevel nature of the problem causes these transition probabilities to deviate significantly from the predictions of the traditional Landau-Zener-Stückelberg model.","PeriodicalId":150867,"journal":{"name":"Acta Physica Hungarica B) Quantum Electronics","volume":"199 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116402580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信