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Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society最新文献

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Polynomial intelligent states 多项式智能状态
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-12-01 DOI: 10.1088/1464-4266/7/12/026
Matthew M Milks, H. Guise
{"title":"Polynomial intelligent states","authors":"Matthew M Milks, H. Guise","doi":"10.1088/1464-4266/7/12/026","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/026","url":null,"abstract":"The construction of su(2) intelligent states is simplified using a polynomial representation of su(2). The cornerstone of the new construction is the diagonalization of a 2 × 2 matrix. The method is sufficiently simple to be easily extended to su(3), where one is required to diagonalize a single 3 × 3 matrix. For two perfectly general su(3) operators, this diagonalization is technically possible but the procedure loses much of its simplicity owing to the algebraic form of the roots of a cubic equation. Simplified expressions can be obtained by specializing the choice of su(3) operators. This simpler construction will be discussed in detail.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/026","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60914870","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: 9
Mesoscopic multistability with atomic coherence effects 具有原子相干效应的介观多稳定性
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-12-01 DOI: 10.1088/1464-4266/7/12/034
S. Hassan, Y. A. Sharaby
{"title":"Mesoscopic multistability with atomic coherence effects","authors":"S. Hassan, Y. A. Sharaby","doi":"10.1088/1464-4266/7/12/034","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/034","url":null,"abstract":"The steady state behaviour describing the interaction of a mesoscopic system of coherently injected two-level Rydberg atoms with a coherently driven single-mode cavity is investigated in both resonant and non-resonant regimes. Multiple-switching effects between the output field states are predicted with the atomic coherent excitation (θ) and relative coherent phase parameter (Φr) of the atomic coherent state . The relation between the transmitted field (x) and the atomic cooperation parameter (C) shows multistable behaviour for some values of the polar and azimuthal angles (θ,). The transverse field feature in the form of a Gaussian beam profile tends to degrade the multistable structure in the (C–x) and the input–output field (x–Y) relations. Micromaser action is analysed for the system with atomic coherence within and without the plane wave approximation.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/034","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60915316","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: 6
PREFACE: Final issue of Journal of Optics B: Quantum and Semiclassical Optics 前言:《光学学报B:量子与半经典光学》最后一期
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-12-01 DOI: 10.1088/1464-4266/7/12/E02
W. Lange, C. Bedrock
{"title":"PREFACE: Final issue of Journal of Optics B: Quantum and Semiclassical Optics","authors":"W. Lange, C. Bedrock","doi":"10.1088/1464-4266/7/12/E02","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/E02","url":null,"abstract":"","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/E02","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60915969","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: 41
Squeezing and higher-order squeezing of photon-added coherent states propagating in a Kerr-like medium 在类克尔介质中传播的光子加相干态的压缩和高阶压缩
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-12-01 DOI: 10.1088/1464-4266/7/12/040
C. Sudheesh, S. Lakshmibala, V. Balakrishnan
{"title":"Squeezing and higher-order squeezing of photon-added coherent states propagating in a Kerr-like medium","authors":"C. Sudheesh, S. Lakshmibala, V. Balakrishnan","doi":"10.1088/1464-4266/7/12/040","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/040","url":null,"abstract":"We investigate the squeezing and higher-order squeezing properties of photon-added coherent states propagating through a Kerr-like medium, particularly close to instants of revivals and fractional revivals of the state. The Wigner functions at these instants are obtained, and the extent of non-classicality quantified.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/040","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60916169","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: 21
Equivalence of second-order sub-Poissonian statistics and fourth-order squeezing for intense light 强光的二阶亚泊松统计量和四阶压缩的等价性
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-11-23 DOI: 10.1088/1464-4266/7/12/052
H. Prakash, Pankaj Kumar
{"title":"Equivalence of second-order sub-Poissonian statistics and fourth-order squeezing for intense light","authors":"H. Prakash, Pankaj Kumar","doi":"10.1088/1464-4266/7/12/052","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/052","url":null,"abstract":"We study the simultaneous occurrence of second-order sub-Poissonian photon statistics and fourth-order squeezing for the operator Xθ = X1cosθ+X2sinθ, in the displaced state , where the Hermitian operators X1,2 are defined by X1+i X2 = a, the annihilation operator, D(α) = exp(αa+−α*a) is the displacement operator, α = |α|ei θ and is the state of the weak optical field. We show that the two phenomena occur simultaneously when the amplitude |α| of the displacement is very large as compared to the amplitude of the weak optical field. We also propose a balanced homodyne method for detection of fourth-order squeezed light in the same fashion as that for normal squeezing.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/052","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60915904","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: 9
The entanglement of two dipole–dipole coupled atoms in a cavity interacting with a thermal field 两个偶极-偶极耦合原子在与热场相互作用的空腔中的纠缠
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-11-23 DOI: 10.1088/1464-4266/7/12/049
L. S. Aguiar, P. P. Munhoz, A. Vidiella-Barranco, J. Roversi
{"title":"The entanglement of two dipole–dipole coupled atoms in a cavity interacting with a thermal field","authors":"L. S. Aguiar, P. P. Munhoz, A. Vidiella-Barranco, J. Roversi","doi":"10.1088/1464-4266/7/12/049","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/049","url":null,"abstract":"We investigate the entanglement properties of a system of two dipole–dipole coupled two-level atoms resonantly interacting with a thermal field in a high-Q cavity. We obtain the evolution operator for this system in an analytical form, and use it to evaluate the atom–atom entanglement through the calculation of the negativity. We find that, despite the destructive effect of thermal noise, the dipole interaction yields a considerable amount of entanglement between the two atoms.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60915785","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: 39
Simultaneous squeezing of two orthogonal spin components 两个正交自旋分量的同时挤压
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-11-23 DOI: 10.1088/1464-4266/7/12/046
H. Prakash, Rakesh Kumar
{"title":"Simultaneous squeezing of two orthogonal spin components","authors":"H. Prakash, Rakesh Kumar","doi":"10.1088/1464-4266/7/12/046","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/046","url":null,"abstract":"Squeezing of spin is usually discussed for x and y components (Sx and Sy), considering the commutation relation [Sx,Sy] = i SZ for the triad (Sx, Sy, SZ) of three mutually perpendicular spin components. We generalize and discuss squeezing of the spin component Sθ = Sxcosθ+Sysinθ considering all possible such triads, which include Sθ. For an explicit example involving the interaction of an assembly of two excited two-level atoms with single-mode coherent radiation, we find that Sθ and Sθ+π/2 can be squeezed simultaneously.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/046","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60916156","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: 17
Manipulating quantum information via quantum cloning 通过量子克隆操纵量子信息
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-11-22 DOI: 10.1088/1464-4266/7/12/032
F. Martini, L. Masullo, M. Ricci, F. Sciarrino, V. Secondi
{"title":"Manipulating quantum information via quantum cloning","authors":"F. Martini, L. Masullo, M. Ricci, F. Sciarrino, V. Secondi","doi":"10.1088/1464-4266/7/12/032","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/032","url":null,"abstract":"An extensive characterization of the information flux underlying the  universal cloning process is presented together with the realization of several cloning and measurement tasks. The restoration of both the quantum and classical information associated to the input qubit was theoretically analysed and experimentally accomplished. At the same time the extension of the cloning to the  universal and covariant processes is reported with the first experimental optical realizations.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/032","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60915469","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
Entanglement of distant superconducting quantum interference device rings 远距离超导量子干涉装置环的纠缠
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-11-22 DOI: 10.1088/1464-4266/7/12/039
Z. Zukarnain, A. Konstadopoulou, A. Vourdas, R. Migliore, A. Messina
{"title":"Entanglement of distant superconducting quantum interference device rings","authors":"Z. Zukarnain, A. Konstadopoulou, A. Vourdas, R. Migliore, A. Messina","doi":"10.1088/1464-4266/7/12/039","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/039","url":null,"abstract":"We consider two distant mesoscopic SQUID rings, approximated with two-level systems, interacting with two-mode microwaves. The Hamiltonian of the system is used to calculate its time evolution. The cases with microwaves which at t = 0 are in separable states (classically correlated) or entangled states (quantum mechanically correlated) are studied. It is shown that the Josephson currents in the two SQUID rings are also correlated.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/039","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60915723","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
Statistical properties of nonlinear intermediate states : binomial state 非线性中间态的统计性质:二项态
Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society Pub Date : 2005-11-22 DOI: 10.1088/1464-4266/7/12/036
M. S. Abdalla, A. Obada, M. Darwish
{"title":"Statistical properties of nonlinear intermediate states : binomial state","authors":"M. S. Abdalla, A. Obada, M. Darwish","doi":"10.1088/1464-4266/7/12/036","DOIUrl":"https://doi.org/10.1088/1464-4266/7/12/036","url":null,"abstract":"In the present paper we introduce a nonlinear binomial state (the state which interpolates between the nonlinear coherent and number states). The main investigation concentrates on the statistical properties for such a state where we consider the squeezing phenomenon by examining the variation in the quadrature variances for both normal and amplitude-squared squeezing. Examinations for the quasi-probability distribution functions (W-Wigner and Q-functions) are also given for both diagonal and off diagonal terms. The quadrature distribution and the phase distribution as well as the phase variances are discussed. Moreover, we give in detail a generation scheme for such state.","PeriodicalId":87441,"journal":{"name":"Journal of optics. B, Quantum and semiclassical optics : journal of the European Optical Society","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2005-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1088/1464-4266/7/12/036","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"60915480","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: 8
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