Annalen der Physik最新文献

{"title":"Statistical Link Between Bell Nonlocality and Uncertainty Relations in Quantum Mechanics","authors":"Li-Yi Hsu","doi":"10.1002/andp.202500049","DOIUrl":"https://doi.org/10.1002/andp.202500049","url":null,"abstract":"<p>Bell nonlocality refers to the nonlocal correlation strength among quantum systems that cannot be duplicated using local hidden variables, and uncertainty relations set the lower bound on the sum or product of variances for incompatible observables within a quantum system. In this work, the study of linking these two fundamental quantum features in terms of statistical characteristics within Bell tests is initiated. Two statistics determine the state-dependent quantum upper bounds of the Bell values: the expectation values of local observables, and the joint uncertainty that is the product of local uncertainty. Specifically, it is showed that the joint measurement uncertainty determines the upper bounds of covariant Bell inequalities in the quantum region, with more joint measurement uncertainty required for more covariant correlation strengths. Conversely, the covariant Bell value defines the lower bound of joint uncertainty. In addition, given the maximally entangled states, Tsirelson's bounds of Bell inequalities can be achieved when the joint uncertainty reaches the maximum.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 9","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202500049","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Using the Time-Transformation Approach to Generate Free Ballistic Acceleration and Inversion of the Airy Pulse in Dynamic Optical Media","authors":"Lucien Mandeng Mandeng,&nbsp;Clément Tchawoua","doi":"10.1002/andp.202500133","DOIUrl":"https://doi.org/10.1002/andp.202500133","url":null,"abstract":"<p>In this study, the time-transformation approach (TTA) is applied to investigate two key phenomena in dynamic optical media: free ballistic acceleration (FBA) and asymmetric Airy pulse inversion (AAPI). These effects arise from either the interplay between input chirp and group-velocity dispersion (GVD) or from dominant positive third-order dispersion (TOD) on a truncated Airy profile (TAP) electric field. By modeling a linear dynamic medium that includes GVD and TOD, an impulse response is derived with an intrinsic Airy structure. Nonlinear effects, particularly the Kerr effect, are incorporated via a Jacobian-based transit time expression. In the linear regime, these results closely match those obtained with the split-step Fourier method (SSFM), while being approximately 14 times faster due to TTA's direct field mapping. In the Kerr nonlinear regime, TTA remains reliable, especially for AAPI driven by chirp-GVD interaction. These findings highlight TTA as a powerful hybrid analytical-numerical tool for simulating asymmetric optical signals like TAPs in time-varying media.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 9","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012070","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of Correlated Hopping on Thermoelectric Response of a Quantum dot Strongly Coupled to Ferromagnetic Leads","authors":"Kacper Wrześniewski,&nbsp;Ireneusz Weymann","doi":"10.1002/andp.202500236","DOIUrl":"https://doi.org/10.1002/andp.202500236","url":null,"abstract":"<p>The impact of correlated hopping on thermoelectric transport is theoretically investigated through a quantum dot coupled to ferromagnetic leads. Using the accurate numerical renormalization group method, the transport characteristics are analyzed, focusing on the interplay between electronic correlations, spin-dependent transport processes, and thermoelectric response. The electrical conductance and thermopower are calculated as functions of the dot energy level, lead polarization, and the amplitude of correlated hopping. Moreover, the effect of competing correlations is analyzed on the Kondo resonance and discuss the asymmetry of conductance peaks under the influence of the exchange field. It is demonstrated that the presence of correlated hopping is responsible for asymmetric spin-dependent transport characteristics. These results provide valuable insight into how correlated hopping affects spin-dependent transport and thermoelectric efficiency in quantum dot systems with ferromagnetic contacts.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 9","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012406","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Comprehensive Study of the Spin-Hall Effect of Tightly Focused Linearly Polarized Light Through a Stratified Medium in Optical Tweezers","authors":"Sramana Das,&nbsp;Sauvik Roy,&nbsp;Subhasish Dutta Gupta,&nbsp;Nirmalya Ghosh,&nbsp;Ayan Banerjee","doi":"10.1002/andp.202500064","DOIUrl":"https://doi.org/10.1002/andp.202500064","url":null,"abstract":"<p>An extensive study is conducted of the Spin-Hall Effect of light that is an important consequence of the spin-orbit interaction in optical tweezers. Thus, the evolution of a linearly polarized input beam under tight focusing in the presence of a refractive index stratified medium is numerically simulated. Importantly, the numerical aperture of the focusing lens, as well as the refractive indices of the different layers of the stratified medium are varied. The longitudinal component of the spin angular momentum density – that leads to spinning of birefringent particles – changes more-or-less monotonically with the lens numerical aperture, other than values where the light incidence angle equals the critical angle. The Spin-Hall shift – which is the transverse spatial separation of opposite helicities generated due to the Spin-Hall effect – displays much larger values compared to the sub-wavelength orders typically reported for particular combinations of refractive index and numerical aperture. Interestingly, the Spin-Hall Shift does not vary monotonically with the lens numerical aperture, and may undergo abrupt changes depending on the refractive index distribution of the stratified medium. The results may find important applications in designing experiments for generating exotic spin-orbit optomechanics of trapped particles in optical tweezers.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 8","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Observation of Surface 2D Electron Gas in Highly Bulk-Insulating Bi4I4","authors":"Dong Chen,&nbsp;Vicky Hasse,&nbsp;Chenguang Fu,&nbsp;Yu Pan,&nbsp;Claudia Felser","doi":"10.1002/andp.202500136","DOIUrl":"https://doi.org/10.1002/andp.202500136","url":null,"abstract":"<p>Topological insulators are usually good thermoelectric materials, and it is intriguing to investigate if the topological surface states enhance the thermoelectric performance. For the observation of exotic surface-state-dominated transport properties, it is crucial to tune the Fermi energy into the bulk bandgap. However, this is of great challenge, and a controllable method to tune the Fermi energy for the as-grown bulk crystals is highly desirable. In this work, realize the post-synthesis tuning of the Fermi energy in the topological insulator Bi₄I₄ is successfully realized by annealing. The annealing process excites the escape of iodine and changes the carrier type from hole to electron. The annealed crystals can be highly insulating by showing an extremely low carrier concentration in the order of 10¹⁵ cm⁻³, one of the lowest values among the reported topological insulators. Benefiting from the highly insulating bulk state, a 2D surface state induced by band bending is identified by quantum oscillations. These results shed light on the post-synthesis way of Fermi energy engineering for bulk crystals, and on the preparation of 2D electron gas on the surface of bulk crystals, which can be instructive to resolve the surface-states contribution to various physical properties including thermoelectric transport properties.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 8","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202500136","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Four Bundle Optical Singularities Spatial Evolution","authors":"Denis A. Ikonnikov,&nbsp;Erdeny C. Darmaev,&nbsp;Sergey A. Myslivets,&nbsp;Konstantin N. Pichugin,&nbsp;Vasily G. Arkhipkin,&nbsp;Andrey M. Vyunishev","doi":"10.1002/andp.202500080","DOIUrl":"https://doi.org/10.1002/andp.202500080","url":null,"abstract":"<p>Complex optical vortex bundles produced by dislocations arranged in accordance with the group of symmetry <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>D</mi>\u0000 <mn>1</mn>\u0000 </msub>\u0000 <mo>,</mo>\u0000 <msub>\u0000 <mi>D</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <mo>,</mo>\u0000 <msub>\u0000 <mi>C</mi>\u0000 <mn>4</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$D_1, D_2, C_4$</annotation>\u0000 </semantics></math> are studied theoretically and experimentally. The spatial evolution of optical vortices is investigated for three types of spatial configurations based on the signs of dislocation topological charges. Theoretical predictions derived from the Fresnel diffraction integral and the hydrodynamic approach have been found to be consistent with each other and are in a good agreement with the experimental results. For all cases, the symmetry properties of the dislocation arrangement are shown to be imposed to optical vortex bundles produced. The observed dynamics provides new insights into the behavior of singularities in complex optical fields.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 8","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Zero-Field Hybridization of Anomalous Nernst and Off-diagonal Seebeck Effects in Artificially Tilted Multilayers","authors":"Yebin Lee,&nbsp;Fuyuki Ando,&nbsp;Takamasa Hirai,&nbsp;Rajkumar Modak,&nbsp;Hossein Sepehri-Amin,&nbsp;Ken-ichi Uchida","doi":"10.1002/andp.202500127","DOIUrl":"https://doi.org/10.1002/andp.202500127","url":null,"abstract":"<p>Hybrid transverse thermoelectric conversion driven by simultaneous action of multiple phenomena offers a promising route for efficient energy conversion. This study demonstrates magnetic-field-free hybrid transverse thermoelectric conversion based on the anomalous Nernst and off-diagonal Seebeck effects in artificially tilted multilayers comprising SmCo₅/Bi_0.2Sb_1.8Te₃ junctions, where the remanent magnetization of SmCo₅ induces the anomalous Nernst effect in the absence of an external magnetic field. The thermoelectric figure of merit is observed to be 0.299 ± 0.005 at room temperature owing to the additive contribution of the anomalous Nernst effect, indicating that the excellent figure of merit due to the off-diagonal Seebeck effect can further be enhanced by hybridizing the anomalous Nernst effect. These results establish a new approach for high-performance transverse thermoelectric materials, enabling energy harvesting and cooling applications that leverage magnetically controlled thermoelectric effects without requiring an external magnetic field.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 8","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-06-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/andp.202500127","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809289","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lorentz–Drude Dipoles in the Radiative Limit and Their Modeling in Finite-Difference Time-Domain Methods","authors":"Heming Wang,&nbsp;Shanhui Fan","doi":"10.1002/andp.202500156","DOIUrl":"https://doi.org/10.1002/andp.202500156","url":null,"abstract":"<p>The Lorentz–Drude model for electric dipoles is a classical framework widely used in the study of dipole dynamics and light-matter interactions. This article focuses on the behavior of Lorentz–Drude dipoles when their radiative rate dominates their energy loss. It is asserted that dipole radiation losses do not count toward phenomenological dipole losses if the driving field is interpreted as the total field at the dipole. In particular, if the dipole does not contain non-radiative losses, then the Lorentz–Drude damping term should be removed. This is verified by self-consistent implementations of point dipoles in finite-difference time-domain simulations, which also provide a method to directly compute the transport properties of light when dipoles are present.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 8","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144809264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"An Easily Computable Measure of Gaussian Quantum Imaginarity","authors":"Ting Zhang,&nbsp;Jinchuan Hou,&nbsp;Xiaofei Qi","doi":"10.1002/andp.202500171","DOIUrl":"https://doi.org/10.1002/andp.202500171","url":null,"abstract":"&lt;p&gt;The resource-theoretic frameworks for quantum imaginarity have been developed in recent years. Within these frameworks, many imaginarity measures for finite-dimensional systems have been proposed. However, for imaginarity of Gaussian states in continuous-variable (CV) systems, there are only two known Gaussian imaginarity measures, which exhibit prohibitive computational complexity when applied to multi-mode Gaussian states. In this paper, a computable Gaussian imaginarity measure &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;msup&gt;\u0000 &lt;mi&gt;I&lt;/mi&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;G&lt;/mi&gt;\u0000 &lt;mi&gt;n&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/msup&gt;\u0000 &lt;annotation&gt;$mathcal {I}^{G_n}$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; is proposed for &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mi&gt;n&lt;/mi&gt;\u0000 &lt;annotation&gt;$n$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;-mode Gaussian systems. The value of &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;msup&gt;\u0000 &lt;mi&gt;I&lt;/mi&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;G&lt;/mi&gt;\u0000 &lt;mi&gt;n&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/msup&gt;\u0000 &lt;annotation&gt;$mathcal {I}^{G_n}$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; is simply formulated by the displacement vectors and covariance matrices of Gaussian states. A comparative analysis of &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;msup&gt;\u0000 &lt;mi&gt;I&lt;/mi&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;G&lt;/mi&gt;\u0000 &lt;mi&gt;n&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/msup&gt;\u0000 &lt;annotation&gt;$mathcal {I}^{G_n}$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; with existing two Gaussian imaginarity measures indicates that &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;msup&gt;\u0000 &lt;mi&gt;I&lt;/mi&gt;\u0000 &lt;msub&gt;\u0000 &lt;mi&gt;G&lt;/mi&gt;\u0000 &lt;mi&gt;n&lt;/mi&gt;\u0000 &lt;/msub&gt;\u0000 &lt;/msup&gt;\u0000 &lt;annotation&gt;$mathcal {I}^{G_n}$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt; can be used to detect imaginarity in any &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mi&gt;n&lt;/mi&gt;\u0000 &lt;annotation&gt;$n$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;-mode Gaussian states more efficiently. As an application, the dynamics behavior of &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;mrow&gt;\u0000 &lt;mo&gt;(&lt;/mo&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;mo&gt;+&lt;/mo&gt;\u0000 &lt;mn&gt;1&lt;/mn&gt;\u0000 &lt;mo&gt;)&lt;/mo&gt;\u0000 &lt;/mrow&gt;\u0000 &lt;annotation&gt;$(1+1)$&lt;/annotation&gt;\u0000 &lt;/semantics&gt;&lt;/math&gt;-mode Gaussian states is studied in Gaussian Markovian noise environments for two-mode CV system by utilizing &lt;span&gt;&lt;/span&gt;&lt;math&gt;\u0000 &lt;semantics&gt;\u0000 &lt;msup&gt;\u0000 &lt;mi&gt;I&lt;/mi&gt;\u0000 &lt;msub&gt;\u0000 ","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 9","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145012830","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Efficient Entanglement Generation of Two Superconducting Qubits in a Circuit QED","authors":"Run-Ying Yan,&nbsp;Zhi-Bo Feng","doi":"10.1002/andp.202500128","DOIUrl":"https://doi.org/10.1002/andp.202500128","url":null,"abstract":"<p>The optimal generation of entangled states is of significance to information processing and state engineering. Here, an efficient scheme is proposed for creating entangled states between two superconducting qubits in a circuit quantum electrodynamics (QED). The two qubits that resonantly interact with a common cavity mode of transmission-line resonator (TLR) can be effectively coupled by the data bus of the microwave resonator. By the invariant-based shortcuts to adiabaticity (STA), two types of maximally entangled states can be controllably induced only by adjusting the Rabi drivings. Based on the resonant drivings with constant rates, the shortcut strategy is capable of implementing faster operations when compared with the dispersive approach. The fidelities are highly robust against the decoherence effects and the instabilities of Rabi rates. Thus the proposal could offer a potential route toward the entanglement generations in an optimized manner.</p>","PeriodicalId":7896,"journal":{"name":"Annalen der Physik","volume":"537 8","pages":""},"PeriodicalIF":2.5,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144811123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}