Advanced quantum technologies最新文献

{"title":"Front Cover: QMM-Enhanced Error Correction: Demonstrating Reversible Imprinting and Retrieval for Robust Quantum Computation (Adv. Quantum Technol. 9/2025)","authors":"Florian Neukart,&nbsp;Eike Marx,&nbsp;Valerii Vinokur,&nbsp;Jeff Titus","doi":"10.1002/qute.70011","DOIUrl":"10.1002/qute.70011","url":null,"abstract":"<p>A discrete ‘Quantum Memory Matrix’ lattice (central orange cell) symbolizes Planck-scale quantum memory units imprinting and retrieving local quantum fields. The circuit diagram below, featuring controlled-Ry, Ry, and CSWAP gates, illustrates the fully unitary QMM imprint–retrieval primitive that underpins enhanced error suppression and hybrid quantum-classical learning on NISQ devices. More in article number 2500262, Florian Neukart and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/qute.70011","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Back Cover: Explicit Formulas for Estimating Trace of Reduced Density Matrix Powers via Single-Circuit Measurement Probabilities (Adv. Quantum Technol. 9/2025)","authors":"Rui-Qi Zhang,&nbsp;Xiao-Qi Liu,&nbsp;Jing Wang,&nbsp;Ming Li,&nbsp;Shu-Qian Shen,&nbsp;Shao-Ming Fei","doi":"10.1002/qute.70010","DOIUrl":"10.1002/qute.70010","url":null,"abstract":"<p>The cover picture shows a controlled SWAP test quantum circuit with several state copies, and bitstrings (e.g., 0000, 1001, 1111) as measurement results. These bitstrings correspond to probabilities to simultaneously estimate traces of the 2nd to nth power traces of reduced density matrices via a single circuit, applied to entanglement measure computation. More in article number 2500376, Ming Li and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/qute.70010","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Issue Information (Adv. Quantum Technol. 9/2025)","authors":"","doi":"10.1002/qute.70012","DOIUrl":"10.1002/qute.70012","url":null,"abstract":"","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/qute.70012","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Issue Information (Adv. Quantum Technol. 8/2025)","authors":"","doi":"10.1002/qute.70004","DOIUrl":"10.1002/qute.70004","url":null,"abstract":"","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/qute.70004","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833166","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Back Cover: A Novel Co-Magnetometer Based on Double-Probe in Situ Decoupling of Magnetic Field and Inertia Rotation (Adv. Quantum Technol. 8/2025)","authors":"Ye Liu,&nbsp;Wenfeng Fan,&nbsp;Yao Liu,&nbsp;Jiale Quan,&nbsp;Haoying Pang,&nbsp;Xin Wang,&nbsp;Longyan Ma,&nbsp;Wei Quan","doi":"10.1002/qute.70000","DOIUrl":"10.1002/qute.70000","url":null,"abstract":"<p>In article number 2500253, Wenfeng Fan, Wei Quan, and co-workers report a novel in-situ magnetic noise compensation mechanism in a K-Rb-21Ne atomic comagnetometer, leveraging differential spin polarization of two alkali metals. This system decouples magnetic fields and inertial rotations in situ, enabling simultaneous measurement of both parameters and enhancing stability for precision spin-interaction studies.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/qute.70000","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inside Back Cover: Performance Analysis of High-Dimensional Orbital Angular Momentum Entanglement Distribution on Unmanned Aerial Vehicle Platforms (Adv. Quantum Technol. 8/2025)","authors":"Dong-Xuan Li,&nbsp;Tao Zhao,&nbsp;Min An,&nbsp;Meng-Yao Yang,&nbsp;Yun-Long Wang,&nbsp;Fei-Ran Wang,&nbsp;Ze-Hong Chang,&nbsp;Pei Zhang","doi":"10.1002/qute.70001","DOIUrl":"10.1002/qute.70001","url":null,"abstract":"<p>In article number 2500202, Yun-Long Wang, Fei-Ran Wang, Ze-Hong Chang, and co-workers explored the feasibility of deploying high-dimensional orbital angular momentum (OAM) entanglement distribution through unmanned aerial vehicle platforms, and analyzed the influence of various system factors on entanglement fidelity through theoretical modeling. Furthermore, a high-dimensional subspace coding quantum key distribution protocol is introduced to maximally exploit the noise resistance of high-dimensional entanglement. Based on the mode-dependent characteristics of OAM, a protocol optimization scheme is developed specifically for the OAM degree of freedom. Simulation results demonstrate a significant enhancement in system performance and noise resistance.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/qute.70001","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Inside Front Cover: Deterministic Fabrication of GaAs-Quantum-Dot Micropillar Single-Photon Sources (Adv. Quantum Technol. 8/2025)","authors":"Abdulmalik A. Madigawa,&nbsp;Martin Arentoft Jacobsen,&nbsp;Claudia Piccinini,&nbsp;Paweł Wyborski,&nbsp;Ailton Garcia Jr.,&nbsp;Saimon F. Covre da Silva,&nbsp;Armando Rastelli,&nbsp;Battulga Munkhbat,&nbsp;Niels Gregersen","doi":"10.1002/qute.70003","DOIUrl":"10.1002/qute.70003","url":null,"abstract":"<p>Deterministic integration of droplet-etched GaAs quantum dots into micropillar cavities is demonstrated with 100% positioning yield. The collection efficiency for p-shell excitation is doubled by introducing charge stabilization using low-power above-band LED illumination. The deterministic integration method is then used to demonstrate suppression of radiation modes introduced by implementing cylindrical rings, and the fabricated devices emit high-purity single photons. More in article number 2500128, Battulga Munkhbat, Niels Gregersen, and co-workers.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/qute.70003","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833277","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Front Cover: One-Way Network Nonlocality of Continuous Variable Entangled Networks (Adv. Quantum Technol. 8/2025)","authors":"Jun-Li Jiang,&nbsp;Xin-Zhu Liu,&nbsp;Xue Yang,&nbsp;Xiuyong Ding,&nbsp; Da Zhang,&nbsp;Ming-Xing Luo","doi":"10.1002/qute.70002","DOIUrl":"10.1002/qute.70002","url":null,"abstract":"<p>In article number 2500147, Da Zhang, Ming-Xing Luo, and co-workers demonstrate a metropolitan quantum network enabled by continuous-variable entanglement, symbolized by jellyfish and octopuses as communication nodes. Such networks enable high-speed, secure communication. The research presents an all-optical verification to validate quantum links. The vibrant scene reflects the dynamic, interconnected nature of quantum information transfer, bridging theory and practical applications for next-gen internet.\u0000\u0000 <figure>\u0000 <div><picture>\u0000 <source></source></picture><p></p>\u0000 </div>\u0000 </figure></p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://advanced.onlinelibrary.wiley.com/doi/epdf/10.1002/qute.70002","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144833284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Explicit Formulas for Estimating Trace of Reduced Density Matrix Powers via Single-Circuit Measurement Probabilities","authors":"Rui-Qi Zhang,&nbsp;Xiao-Qi Liu,&nbsp;Jing Wang,&nbsp;Ming Li,&nbsp;Shu-Qian Shen,&nbsp;Shao-Ming Fei","doi":"10.1002/qute.202500376","DOIUrl":"10.1002/qute.202500376","url":null,"abstract":"<p>In the fields of quantum mechanics and quantum information science, the traces of reduced density matrix powers play a crucial role in the study of quantum systems and have numerous important applications. In this study, a universal framework is proposed to simultaneously estimate the traces of the 2nd to the <span></span><math>\u0000 <semantics>\u0000 <mi>n</mi>\u0000 <annotation>$n$</annotation>\u0000 </semantics></math>th powers of a reduced density matrix using a single quantum circuit with <span></span><math>\u0000 <semantics>\u0000 <mi>n</mi>\u0000 <annotation>$n$</annotation>\u0000 </semantics></math> copies of the quantum state. Specifically, this approach leverages the controlled SWAP test and establishes explicit formulas connecting measurement probabilities to these traces. Further, two algorithms are developed: a purely quantum method and a hybrid quantum-classical approach combining Newton–Girard iteration. Rigorous analysis via Hoeffding inequality demonstrates the method's efficiency, requiring only <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>M</mi>\u0000 <mo>=</mo>\u0000 <mi>O</mi>\u0000 <mfenced>\u0000 <mfrac>\u0000 <mn>1</mn>\u0000 <msup>\u0000 <mi>ε</mi>\u0000 <mn>2</mn>\u0000 </msup>\u0000 </mfrac>\u0000 <mi>log</mi>\u0000 <mrow>\u0000 <mo>(</mo>\u0000 <mfrac>\u0000 <mi>n</mi>\u0000 <mi>δ</mi>\u0000 </mfrac>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 </mfenced>\u0000 </mrow>\u0000 <annotation>$M=Oleft(frac{1}{epsilon ^2}log (frac{n}{delta })right)$</annotation>\u0000 </semantics></math> measurements to achieve precision <span></span><math>\u0000 <semantics>\u0000 <mi>ε</mi>\u0000 <annotation>$epsilon$</annotation>\u0000 </semantics></math> with confidence <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mn>1</mn>\u0000 <mo>−</mo>\u0000 <mi>δ</mi>\u0000 </mrow>\u0000 <annotation>$1-delta$</annotation>\u0000 </semantics></math>. Additionally, various applications are explored including the estimation of nonlinear functions and the representation of entanglement measures. Numerical simulations are conducted for two maximally entangled states, the GHZ state and the W state, to validate the proposed method.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057834","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}

{"title":"Issue Information (Adv. Quantum Technol. 7/2025)","authors":"","doi":"10.1002/qute.202570016","DOIUrl":"10.1002/qute.202570016","url":null,"abstract":"","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 7","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202570016","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}