Advanced quantum technologies最新文献_第3页

Closing the Objectivity Loophole in Bell Tests on a Public Quantum Computer 填补公共量子计算机贝尔测试的客观性漏洞

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-30 DOI: 10.1002/qute.70420

Adam Bednorz, Josep Batle, Tomasz Białecki, Jarosław K. Korbicz

引用次数: 0

Gyrotropic Fingerprints of Magnetic Topological Insulator–Unconventional Magnet Interfaces 磁性拓扑绝缘体的回旋指纹图谱-非常规磁体界面

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-30 DOI: 10.1002/qute.70427

Neelanjan Chakraborti, Snehasish Nandy, Sudeep Kumar Ghosh

{"title":"Gyrotropic Fingerprints of Magnetic Topological Insulator–Unconventional Magnet Interfaces","authors":"Neelanjan Chakraborti, Snehasish Nandy, Sudeep Kumar Ghosh","doi":"10.1002/qute.70427","DOIUrl":"https://doi.org/10.1002/qute.70427","url":null,"abstract":"<div>\u0000 \u0000 <p>Unambiguously identifying unconventional magnetic orders requires probes directly sensitive to their momentum-dependent spin–split band structures. Here, we employ a Zeeman quantum geometry framework to study magnetotransport at the interface between a magnetic topological insulator and an unconventional magnetic insulator. By choosing the magnetic layer to be insulating, the transport response originates solely from the proximity-induced exchange field, eliminating contributions from itinerant magnetic carriers. We focus on the linear intrinsic gyrotropic magnetic (IGM) response, which decomposes into conduction and displacement current components governed by the Zeeman Berry curvature and Zeeman quantum metric, respectively. We uncover a universal hierarchy in which the transverse displacement IGM response exhibits characteristic even-fold angular harmonics for magnetic orders ranging from <span></span><math>\u0000 <semantics>\u0000 <mi>p</mi>\u0000 <annotation>$p$</annotation>\u0000 </semantics></math>- to <span></span><math>\u0000 <semantics>\u0000 <mi>i</mi>\u0000 <annotation>$i$</annotation>\u0000 </semantics></math>-wave, while the longitudinal IGM response distinguishes the parity of the magnetic order through robust sign-reversal patterns. In contrast, the conduction IGM component remains largely insensitive to the underlying magnetic symmetry. Consequently, the displacement IGM current emerges as a high-fidelity symmetry fingerprint of unconventional magnetic order. Using realistic parameters for experimentally accessible heterostructures, we demonstrate that these signatures are experimentally measurable, establishing Zeeman quantum geometry as a powerful framework for characterizing unconventional magnetic insulators via gyrotropic transport responses.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856742","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

Design of Weakly Coupled Few-Mode Hollow-Core Antiresonant Fiber With Increased Degenerate Mode Spacing 增大简并模间距的弱耦合少模空心芯抗谐振光纤设计

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-30 DOI: 10.1002/qute.70435

Biao Wang, Xin Wang, Shuqin Lou, Zhenggang Lian

{"title":"Design of Weakly Coupled Few-Mode Hollow-Core Antiresonant Fiber With Increased Degenerate Mode Spacing","authors":"Biao Wang, Xin Wang, Shuqin Lou, Zhenggang Lian","doi":"10.1002/qute.70435","DOIUrl":"https://doi.org/10.1002/qute.70435","url":null,"abstract":"<div>\u0000 \u0000 <p>We propose and numerically demonstrate a novel design to increase the spacing between spatial degenerate modes within the same mode group in a weakly coupled few-mode hollow-core anti-resonant fiber (HC-ARF). Increasing the core radius toward the mode lobes of a specific mode, rather than toward its mode field nodes, selectively raises its effective refractive index. This method is implemented by constructing an asymmetric core using cladding tubes of different radii in a six-tube conjoined-tube anti-resonant fiber (CT-ARF). The design eliminates the degeneracy between the LP<sub>11a</sub> and LP<sub>11b</sub> modes without inducing significant birefringence or compromising low-loss operation. The optimized six-tube CT-ARF supports three weakly-coupled modes (LP<sub>01</sub>, LP<sub>11a</sub> and LP<sub>11b</sub>) within the wavelength range of 1330–1630 nm. Over this band, the effective refractive index differences between adjacent guided modes are consistently greater than 1.0 × 10<sup>−4</sup>. Within the wavelength range of 1410–1560 nm, the confinement losses for all three modes are below 2.68 dB/km. In addition, this approach is scalable to a five-mode weakly-coupled HC-ARF, increasing the total number of supported weakly-coupled modes from 5 to 8 by eliminating degeneracy within the LP<sub>11</sub>, LP<sub>21</sub>, LP<sub>31</sub> mode groups. This design is well suited for short‑reach, high‑capacity, low‑latency mode‑division multiplexing systems.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856735","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

Correction to “Lightweight Quantum Neural Networks Intelligent Generation” 修正“轻量级量子神经网络智能生成”

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-30 DOI: 10.1002/qute.70436

引用次数: 0

Squeezing Enhanced Two Phase Estimation With N Particle W States 基于N粒子W态的压缩增强两相估计

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-30 DOI: 10.1002/qute.70426

Huan Zhang, Guofu Yin, Ying Xia, Bing He, Xiuxing Zhang, Shoukang Chang, Wei Ye

{"title":"Squeezing Enhanced Two Phase Estimation With N Particle W States","authors":"Huan Zhang, Guofu Yin, Ying Xia, Bing He, Xiuxing Zhang, Shoukang Chang, Wei Ye","doi":"10.1002/qute.70426","DOIUrl":"https://doi.org/10.1002/qute.70426","url":null,"abstract":"<div>\u0000 \u0000 <p>Simultaneous estimation of two optical phases in a three-mode interferometer assisted by optical parametric amplification (OPA) is investigated. The normally ordered characteristic function formalism is employed to derive analytical expressions for all photon number moments of the output state, allowing explicit evaluation of the quantum Fisher information matrix for multiparameter estimation. In the lossless regime, uniformly applied OPA significantly improves the attainable precision compared with an unamplified interferometer. As the OPA gain increases, the quantum Cramér–Rao bound gradually approaches Heisenberg scaling, resulting from the combined effects of increased photon resources and squeezing-induced modification of photon number statistics. Examination of second-order correlation functions indicates that this enhancement originates from amplified intra mode photon number correlations, rather than inter mode correlations. The analysis is extended to lossy interferometers using a purification-based variational approach. Although photon loss reduces the achievable precision, the OPA assisted scheme preserves a clear advantage in the moderate loss regime, demonstrating robustness against dissipation. These findings clarify the physical origin of OPA enhanced performance and provide guidance for optimizing multiparameter phase estimation protocols in realistic noisy settings.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856738","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

Statistical Quantum Mpemba Effect From Griffiths Rare Regions 格里菲斯稀有区域的统计量子姆潘巴效应

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-30 DOI: 10.1002/qute.70425

Stefano Longhi

引用次数: 0

Polarization-Selective Transports in a Chiral Photon–Atom Coupled System 手性光子-原子耦合系统中的偏振选择性输运

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-30 DOI: 10.1002/qute.70421

Gang Li, Xue Sun, De-Xiu Qiu, Ying Qiao Zhang, Xing Ri Jin

{"title":"Polarization-Selective Transports in a Chiral Photon–Atom Coupled System","authors":"Gang Li, Xue Sun, De-Xiu Qiu, Ying Qiao Zhang, Xing Ri Jin","doi":"10.1002/qute.70421","DOIUrl":"https://doi.org/10.1002/qute.70421","url":null,"abstract":"<div>\u0000 \u0000 <p>We investigate a polarization-selective transport scheme based on two V-type atoms chirally coupled to a waveguide, where each atom exhibits polarization-dependent optical transitions. An external driving field coherently couples the excited states of the atoms, enabling efficient and controllable polarization conversion during photon transport. For an incident photon prepared in a single polarization state, the system exhibits polarization-dependent unidirectional transmission and reflection, arising from the chiral atom–waveguide interaction. Moreover, the external driving field allows polarization conversion to occur selectively within the transport channels. When the incident photon is prepared in a superposition of polarization states, the system simultaneously realizes polarization-selective transmission and reflection, with the transport behavior dynamically controlled by the driving field. This scheme provides a tunable platform for directional transport of single photon with different polarization components, offering a versatile platform for photonic systems with simultaneous control over polarization and propagation direction.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856740","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

Topological States and Nontrivial Properties in a Decorated Honeycomb Photonic Lattice 装饰蜂窝状光子晶格的拓扑态和非平凡性质

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-30 DOI: 10.1002/qute.70404

Zijing Wang, Sheng Xu, Haoming Qi, Senjian Wu, Feng Wen, Zhenkun Wu

{"title":"Topological States and Nontrivial Properties in a Decorated Honeycomb Photonic Lattice","authors":"Zijing Wang, Sheng Xu, Haoming Qi, Senjian Wu, Feng Wen, Zhenkun Wu","doi":"10.1002/qute.70404","DOIUrl":"https://doi.org/10.1002/qute.70404","url":null,"abstract":"<div>\u0000 \u0000 <p>Structural engineering offers a powerful way to control light in photonic lattices, but realizing multiple topological phases within a single lattice platform remains challenging. Here, we theoretically investigate decorated honeycomb photonic lattices (DHPLs), a hybrid geometry that combines key features of honeycomb and Lieb lattices, and show that they provide a flexible platform for topological photonics. Owing to their multi-site unit cell, DHPLs support a broad range of topological phenomena under different modulation schemes. With Su–Schrieffer–Heeger-type coupling asymmetry, the lattice exhibits flat-band features and strongly localized higher-order corner states that remain robust against structural perturbations. Under longitudinal helical modulation, the system enters a Floquet topological phase and supports unidirectional chiral edge transport through dynamically broken time-reversal symmetry. When intrinsic pseudospin–orbit coupling is introduced, the Dirac-point degeneracy is lifted, and spin-dependent edge states emerge, as characterized by nonzero spin-resolved Chern numbers. These results establish DHPLs as a versatile platform for studying distinct topological phases in a unified photonic setting and suggest opportunities for high-density topological waveguide arrays and spin-dependent photonic devices.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856737","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

The Transmission Properties and Dynamical Characterization Driven by the Flat Bands in a Non-Hermitian Dimerized Lattice 非厄米二聚化晶格中平坦带驱动的透射特性和动力学特性

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-29 DOI: 10.1002/qute.70414

Qiao-Nan Li, Ying-Hui Zhang, Lu Qi, Mingzhu Li, Ning Han, Xiu-Yun Zhang, Ai-Lei He

{"title":"The Transmission Properties and Dynamical Characterization Driven by the Flat Bands in a Non-Hermitian Dimerized Lattice","authors":"Qiao-Nan Li, Ying-Hui Zhang, Lu Qi, Mingzhu Li, Ning Han, Xiu-Yun Zhang, Ai-Lei He","doi":"10.1002/qute.70414","DOIUrl":"https://doi.org/10.1002/qute.70414","url":null,"abstract":"<div>\u0000 \u0000 <p>A method of Fourier transform engineering is demonstrated to constructing flat bands in a two-band model. By introducing a momentum-dependent pseudo-<span></span><math>\u0000 <semantics>\u0000 <mi>PT</mi>\u0000 <annotation>$mathcal {PT}$</annotation>\u0000 </semantics></math>-symmetry potential <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mo>±</mo>\u0000 <mi>i</mi>\u0000 <msub>\u0000 <mi>h</mi>\u0000 <mn>0</mn>\u0000 </msub>\u0000 <mrow>\u0000 <mo>(</mo>\u0000 <mi>k</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 </mrow>\u0000 <annotation>$pm ih_0(k)$</annotation>\u0000 </semantics></math> into a generalized Su–Schrieffer–Heeger model, we generate two momentum-independent flat bands. The coexistence of flat bands and non-Hermitian properties induces counterintuitive dynamics. Concretely, flat bands dominate the early-stage evolution, inducing anomalous localization and accelerating quantum walks compared to conventional systems. This acceleration originates from the breaking of eigenstate orthogonality. This work establishes Fourier transform engineering as a powerful tool for manipulating quantum transmission.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856752","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

Third-Order Nonlinear Hall Effect for Probing Berry-Connection Polarizability and Quantum Metric 探测浆果连接极化率和量子度量的三阶非线性霍尔效应

IF 4.3

Advanced quantum technologies Pub Date : 2026-08-29 DOI: 10.1002/qute.70433

Zhiren Chen, Junjie Yao, Guorui Xiao, Liqun Niu, Jingyi Zhou, Zhaowei Zhang, Huiying Liu, Cong Xiao, Shengyuan A. Yang, Shen Lai

{"title":"Third-Order Nonlinear Hall Effect for Probing Berry-Connection Polarizability and Quantum Metric","authors":"Zhiren Chen, Junjie Yao, Guorui Xiao, Liqun Niu, Jingyi Zhou, Zhaowei Zhang, Huiying Liu, Cong Xiao, Shengyuan A. Yang, Shen Lai","doi":"10.1002/qute.70433","DOIUrl":"https://doi.org/10.1002/qute.70433","url":null,"abstract":"<div>\u0000 \u0000 <p>Quantum geometric tensor has two components: the real part corresponds to quantum metric and the imaginary part contains Berry curvature. Physics associated with Berry curvature has been extensively studied in the past, while quantum metric also started to attract significant attention very recently. Third-order nonlinear Hall effect (TNHE) is induced by the Berry connection polarizability (BCP) tensor, which is intimately connected to quantum metric. In this work, we study the temperature dependence of third-order Hall susceptibility in a semimetal TaIrTe<sub>4</sub>. At low temperatures, we find the effective carrier density is approximately invariant, and the scaling analysis renders a good description of TNHE. At higher temperatures, we observe large deviations from low-temperature behavior and even a sign change of the signal around 134 K. We show this anomalous feature is consistent with the temperature-dependent variation of effective carrier density and is qualitatively explained by first-principles simulations, which captures the BCP contribution. Our findings provide insights into the controllability of BCP and quantum metric and suggest possible applications of TNHE.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148856757","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