Advanced quantum technologies最新文献_第2页

Kerr-Effect-Based High-Dimensional Entanglement Generation for Qudit Systems

IF 4.4

Advanced quantum technologies Pub Date : 2025-04-08 DOI: 10.1002/qute.202500010

Ming Ma, Qiang Zhu, Fang-Fang Du

引用次数: 0

Issue Information (Adv. Quantum Technol. 4/2025) 发行资料（量子科技4/2025号公告）

IF 4.4

Advanced quantum technologies Pub Date : 2025-04-08 DOI: 10.1002/qute.202570009

引用次数: 0

Sliding Mode Control-Like Accelerated Coherent Ising Machine

IF 4.4

Advanced quantum technologies Pub Date : 2025-04-08 DOI: 10.1002/qute.202500057

Zhi-guo Nie, Ruo-xing Guo, Chen-rui Fan, Xing-yu Wu, Bo Lu, Cong Cao, Yong-pan Gao

引用次数: 0

Magnetic Field Sensitivity Optimization of Negatively Charged Boron Vacancy Defects in hBN (Adv. Quantum Technol. 4/2025) hBN中负电荷硼空位缺陷的磁场灵敏度优化（Adv. Quantum technology . 4/2025）

IF 4.4

Advanced quantum technologies Pub Date : 2025-04-08 DOI: 10.1002/qute.202570008

Benjamin Whitefield, Milos Toth, Igor Aharonovich, Jean-Philippe Tetienne, Mehran Kianinia

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Quantum Sensing 量子遥感

IF 4.4

Advanced quantum technologies Pub Date : 2025-04-08 DOI: 10.1002/qute.202500120

Tongcang Li, Ren-bao Liu, Chong Zu

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Nonreciprocal Entanglement in Spinning Cavity Magnomechanical System with Coherent Feedback Loop

IF 4.4

Advanced quantum technologies Pub Date : 2025-04-08 DOI: 10.1002/qute.202500063

Cheng-Zhi Gao, Guo-Qing Liu, Nan Wang, Lin Yu, Ai-Dong Zhu

{"title":"Nonreciprocal Entanglement in Spinning Cavity Magnomechanical System with Coherent Feedback Loop","authors":"Cheng-Zhi Gao, Guo-Qing Liu, Nan Wang, Lin Yu, Ai-Dong Zhu","doi":"10.1002/qute.202500063","DOIUrl":"https://doi.org/10.1002/qute.202500063","url":null,"abstract":"A scheme is proposed for generating and enhancing stable nonreciprocal entanglement in a spinning cavity magnomechanical system. The key components of this scheme include a ferromagnetic yttrium iron garnet sphere and a whispering gallery mode resonator supporting two counter-propagating modes. To further optimize the performance of the system, a coherent feedback loop is introduced to reinject the dissipated energy back into the system. This not only provides an additional coupling path for the system but also effectively avoids introducing additional noise caused by measurement. The design significantly enhances both bipartite entanglement and genuine tripartite entanglement. Meanwhile, by spinning the resonator, the cavity modes experience Fizeau drag due to the optical Sagnac effect, thereby achieving nonreciprocal entanglement, which is crucial for applications such as unidirectional quantum communication channels. Additionally, the research demonstrates that even in the presence of backscattering, the entangled state can still recover significantly, highlighting the robustness of entanglement under photon backscattering. This work provides an effective method to enhance and protect quantum resources and holds important application potential for applications in quantum information processing based on magnonics.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 5","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944730","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

Designing Robust Quantum Neural Networks via Optimized Circuit Metrics 基于优化电路指标的鲁棒量子神经网络设计

IF 4.4

Advanced quantum technologies Pub Date : 2025-03-17 DOI: 10.1002/qute.202400601

Walid El Maouaki, Alberto Marchisio, Taoufik Said, Muhammad Shafique, Mohamed Bennai

{"title":"Designing Robust Quantum Neural Networks via Optimized Circuit Metrics","authors":"Walid El Maouaki, Alberto Marchisio, Taoufik Said, Muhammad Shafique, Mohamed Bennai","doi":"10.1002/qute.202400601","DOIUrl":"https://doi.org/10.1002/qute.202400601","url":null,"abstract":"In this study, the robustness of Quanvolutional Neural Networks (QuNNs) is investigated in comparison to their classical counterparts, Convolutional Neural Networks (CNNs), against two adversarial attacks: the Fast Gradient Sign Method (FGSM) and the Projected Gradient Descent (PGD), for the image classification task on both the Modified National Institute of Standards and Technology (MNIST) and Fashion-MNIST (FMNIST) datasets. To enhance the robustness of QuNNs, a novel methodology is developed that utilizes three quantum circuit metrics: expressibility, entanglement capability, and controlled rotation gate selection. This analysis shows that these metrics significantly influence data representation within the Hilbert space, thereby directly affecting QuNN robustness. It is rigorously established that circuits with higher expressibility and lower entanglement capability generally exhibit enhanced robustness under adversarial conditions, particularly at low-spectrum perturbation strengths where most attacks occur. Furthermore, these findings challenge the prevailing assumption that expressibility alone dictates circuit robustness; instead, it is demonstrated that the inclusion of controlled rotation gates around the Z-axis generally enhances the resilience of QuNNs. These results demonstrate that QuNNs exhibit up to 60% greater robustness on the MNIST dataset and 40% on the Fashion-MNIST dataset compared to CNNs. Collectively, this work elucidates the relationship between quantum circuit metrics and robust data feature extraction, advancing the field by improving the adversarial robustness of QuNNs.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 6","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273476","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

PT $mathcal {PT}$ -Symmetric Quantum Rabi Model: Solutions and Exceptional Points PT $mathcal {PT}$ -对称量子Rabi模型：解和例外点

IF 4.4

Advanced quantum technologies Pub Date : 2025-03-17 DOI: 10.1002/qute.202400609

Jiong Li, Yi-Cheng Wang, Li-Wei Duan, Qing-Hu Chen

{"title":"PT\u0000 $mathcal {PT}$\u0000 -Symmetric Quantum Rabi Model: Solutions and Exceptional Points","authors":"Jiong Li, Yi-Cheng Wang, Li-Wei Duan, Qing-Hu Chen","doi":"10.1002/qute.202400609","DOIUrl":"https://doi.org/10.1002/qute.202400609","url":null,"abstract":"The <math>\u0000 <semantics>\u0000 <mi>PT</mi>\u0000 <annotation>$mathcal {PT}$</annotation>\u0000 </semantics></math>-symmetric non-Hermitian quantum Rabi model (QRM) with imaginary coupling is solved using the Bogoliubov operators approach. A transcendental function responsible for the exact solutions is derived, with its zeros yielding the regular spectrum. Two types of intersections: the exceptional points (EPs), which are well-studied in the non-Hermitian system; and another arising from doubly degenerate states due to the conserved QRM parity, which is well-known in the Hermitian QRM, are found. These intersections are identified through this transcendental function. EPs emerge between pairs of adjacent excited energy levels, shifting toward lower coupling strengths as energy levels increase, and can also be predicted by a generalized rotating-wave approximation approach. The fidelity susceptibility diverges to negative infinity at the EPs, consistent with recent findings in non-Hermitian systems, while it diverges to positive infinity at the doubly degenerate points. The EPs are further confirmed by the vanishing c-product in the biorthogonal basis.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 6","pages":""},"PeriodicalIF":4.4,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144273475","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

Front Cover: Effect and Compensation of Polarization-Dependent Loss in Free-Space Reference Frame Independent Quantum Key Distribution (Adv. Quantum Technol. 3/2025) 封面：自由空间参照系独立量子密钥分配中极化相关损耗的影响与补偿（ad . Quantum technology . 3/2025）

IF 4.4

Advanced quantum technologies Pub Date : 2025-03-12 DOI: 10.1002/qute.202570006

Kyongchun Lim, Byung-Seok Choi, Ju Hee Baek, Minchul Kim, Joong-Seon Choe, Kap-Joong Kim, Dong Churl Kim, Junsang Oh, Chun Ju Youn

引用次数: 0

Issue Information (Adv. Quantum Technol. 3/2025) 发行资料（Adv. Quantum technology . 3/2025）

IF 4.4

Advanced quantum technologies Pub Date : 2025-03-12 DOI: 10.1002/qute.202570007

引用次数: 0