Advanced quantum technologies最新文献

{"title":"Nonlinear Enhancement in Hybrid Optomagnonic Systems","authors":"Jin Yang,&nbsp;Bingyu Yang,&nbsp;Biao Xiong,&nbsp;Xiaojuan Wang,&nbsp;Jibing Liu","doi":"10.1002/qute.70391","DOIUrl":"https://doi.org/10.1002/qute.70391","url":null,"abstract":"<div>\u0000 \u0000 <p>Photon blockade is a key quantum effect for generating single-photon sources essential to quantum information processing. Compared with unconventional photon blockade, the conventional counterpart provides higher single-photon generation efficiency but typically demands strong nonlinearity, which severely restricts experimental feasibility. Here, a nonlinear enhancement scheme based on a hybrid optomagnonic system is proposed. The central idea is to exploit an additional tripartite interaction among the TE mode, TM mode, and magnon that, under strong driving, induces two-mode squeezing. Via a squeezing transformation, the effective magnon–photon coupling is exponentially enhanced, giving rise to a strong effective Kerr nonlinearity and thus an increased energy-level detuning. Using both analytical calculations and numerical simulations of the second-order correlation function, it is shown that the conventional photon blockade is substantially enhanced. Compared with the pure optomagnonic scheme induced by the Faraday effect, the proposed approach reduces the second-order correlation function by more than an order of magnitude and dramatically broadens the blockade parameter window. Moreover, photon blockade is achieved even when the intrinsic coupling strength is much smaller than the cavity decay rate. These results suggest a feasible route toward high-efficiency conventional photon blockade without strong intrinsic nonlinearities, potentially facilitating on-chip single-photon sources for scalable quantum information processing.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753815","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":"Visibility-Engineered Multiparameter Sensing in Dispersive Quantum Interferometry: Identifiability, Noise Robustness, and Hardware Emulation","authors":"Lucas Ferreira R. de Moura,&nbsp;Daniel Y. Akamatsu,&nbsp;G. D. de Moraes Neto,&nbsp;Norton G. de Almeida","doi":"10.1002/qute.70401","DOIUrl":"https://doi.org/10.1002/qute.70401","url":null,"abstract":"<div>\u0000 \u0000 <p>We propose a dispersive interferometric protocol for simultaneously estimating the dimensionless inverse temperature <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>b</mi>\u0000 <mo>=</mo>\u0000 <mi>β</mi>\u0000 <mi>ℏ</mi>\u0000 <msub>\u0000 <mi>ω</mi>\u0000 <mn>0</mn>\u0000 </msub>\u0000 </mrow>\u0000 <annotation>$b=beta hbar omega _0$</annotation>\u0000 </semantics></math> of a thermal two-level ancilla and the dispersive phase <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>x</mi>\u0000 <mo>=</mo>\u0000 <mi>χ</mi>\u0000 <mi>t</mi>\u0000 <mo>/</mo>\u0000 <mn>2</mn>\u0000 </mrow>\u0000 <annotation>$x=chi t/2$</annotation>\u0000 </semantics></math>. Photon counting at the interferometer output yields probabilities governed by the fringe visibility <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>V</mi>\u0000 <mo>(</mo>\u0000 <mi>b</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <annotation>$mathcal {V}(b)$</annotation>\u0000 </semantics></math>; its magnitude controls phase sensitivity, while its derivative sets thermometric sensitivity. A single binary outcome provides only a rank-one Fisher matrix, so local identifiability requires combining several controlled reference phases. We build a multi-setting likelihood and numerically demonstrate that a maximum-likelihood estimator attains the Cramér–Rao bound asymptotically. For <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>N</mi>\u0000 <mo>=</mo>\u0000 <mn>1</mn>\u0000 </mrow>\u0000 <annotation>$N=1$</annotation>\u0000 </semantics></math> we implement the equivalent qubit circuit on IBM Quantum hardware, interpreting the data as a conservative likelihood emulation; the observed contrast shrinkage is consistent with a noise bias toward infinite temperature. We also compare NOON, cat, and squeezed probe states under amplitude and phase damping, highlighting windows of usable joint sensitivity. The framework clarifies what can be inferred from photon counting statistics and which control settings are necessary for genuine multiparameter estimation in realistic platforms.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753773","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":"Fast Charging of Lipkin–Meshkov–Glick Quantum Battery","authors":"Cheng-Jie Wang,&nbsp;Yuan-Jin Wang,&nbsp;Fu-Quan Dou","doi":"10.1002/qute.70405","DOIUrl":"https://doi.org/10.1002/qute.70405","url":null,"abstract":"<div>\u0000 \u0000 <p>Fast charging is a pivotal and fundamental performance metric in quantum battery (QB) research. Here, we investigate the fast-charging performance of the Lipkin–Meshkov–Glick QB based on shortcuts to adiabaticity (STA). We mainly consider a scenario where the coupling strength between arbitrary two sites in the QB varies sinusoidally over time. We demonstrate that the STA protocol can remarkably enhance the charging efficiency. During the charging cycle, STA drives the periodic evolution of stored energy, coherence relative entropy, and energy fluctuations, and effectively suppresses energy fluctuation magnitude. We reveal that quantum coherence serves as a crucial quantum resource for boosting the charging efficiency of a QB. We analyze the influences of the anisotropy parameter, driving field amplitude and frequency, as well as particle number on the overall battery performance and show that efficient charging and prominent charging advantages can be realized by modulating these physical parameters. We further evaluate the energy cost throughout the charging process, and confirm that the maximum energy cost per particle can be reduced via appropriate tuning of driving field parameters. Our results offer valuable insights into the optimal design and practical implementation of high-efficiency fast-charging QB.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753748","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":"Heralded Entangled State Generation Enhanced by Photon Addition and Subtraction","authors":"Yun-Long Cao,&nbsp;Xiao-Ye Xu,&nbsp;Chuan-Feng Li,&nbsp;Guang-Can Guo","doi":"10.1002/qute.70396","DOIUrl":"https://doi.org/10.1002/qute.70396","url":null,"abstract":"<div>\u0000 \u0000 <p>Heralded photonic state engineering has become a promising approach for generating non-Gaussian quantum resources using experimentally accessible Gaussian operations and conditional measurements. Existing Gaussian state engineering methods mainly target continuous-variable non-classical states, whereas the systematic generation of heralded multipartite entangled states remains largely unexplored. In this work, a Gaussian state engineering framework enhanced by photon addition and subtraction for heralded generation of entangled states is developed. By combining single-mode squeezing, linear interferometers, and conditional photon-number measurements on ancillary modes, the model probabilistically generates dual-rail encoded Bell, GHZ, and W states. Squeezing parameters and interferometer settings are systematically optimized to maximize both heralding success probability and fidelity with target states. Results demonstrate that photon addition and subtraction significantly enhance output state non-classicality and improve generation performance while maintaining computational efficiency comparable to single-photon source models. Further analysis of the scheme's robustness under parameter perturbations indicates that performance remains stable under realistic experimental imperfections. This work provides a versatile and experimentally feasible framework for scalable heralded entanglement generation using Gaussian resources with non-Gaussian operations.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753768","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":"Locally Passive, Globally Charged Quantum Batteries: Coherence-Controlled Work and the Robustness of the Stored Charge","authors":"Asad Ali,&nbsp;Saif Al-Kuwari,&nbsp;James Q. Quach","doi":"10.1002/qute.70397","DOIUrl":"https://doi.org/10.1002/qute.70397","url":null,"abstract":"<div>\u0000 \u0000 <p>A solvable charger–battery model is introduced in which quantum coherence controls both where a quantum battery's charge is stored and how robustly it survives noise. Charging converts the charger's coherence into charger–battery entanglement and splits the deposited work between a locally extractable part and a correlation-locked part accessible only through joint operations; for a qubit, the split obeys an exact complementarity, and at maximal coherence, the battery is locally passive with the entire charge locked in correlations. Robustness follows local accessibility: the stored energy and locally extractable work are population-based, immune to pure dephasing, and limited only by relaxation, with an energy half-life, whereas the correlation-locked work is fragile to both dephasing and relaxation. Dephasing, global and local depolarization, and amplitude damping are treated through a single gain–loss competition algebra, and the resulting storage lifetimes are made concrete with superconducting-transmon parameters.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753048","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":"Quantum Disease Surveillance Algorithm Based on Private Set Intersection","authors":"Jia-Yin Shi,&nbsp;Rong-Xue Xu,&nbsp;Dan-Dan Li,&nbsp;Ke-Jia Zhang,&nbsp;Long Zhang,&nbsp;Hong-Wei Sun","doi":"10.1002/qute.70399","DOIUrl":"https://doi.org/10.1002/qute.70399","url":null,"abstract":"<div>\u0000 \u0000 <p>Disease surveillance is vital for public health security, allowing early outbreak detection, reducing transmission, safeguarding population health, and aiding emergency response. This paper proposes a quantum disease surveillance algorithm based on private set intersection (PSI). Specifically, we use the BHT algorithm to solve the PSI problem and improve computational efficiency through candidate subset preprocessing and quantum parallel search mechanisms. It achieves a polynomial speedup over previous algorithms by reducing the communication complexity from <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>O</mi>\u0000 <mo>(</mo>\u0000 <mi>N</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <annotation>$O(N)$</annotation>\u0000 </semantics></math> to <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>O</mi>\u0000 <mo>(</mo>\u0000 <mroot>\u0000 <mi>N</mi>\u0000 <mn>3</mn>\u0000 </mroot>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <annotation>$O(sqrt [3]{N})$</annotation>\u0000 </semantics></math> and optimizing the round complexity to a constant, thereby substantially reducing the data transmission overhead. Simulation experiments on the IBM quantum platform verify the correctness and feasibility of our algorithm. Security analysis shows that our algorithm effectively resists both insider and outsider attacks while satisfying privacy-preservation requirements in disease surveillance scenarios, specifically protecting the privacy of individual clients and the server.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753309","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":"Quantum-Enhanced Genetic Algorithm for Quantum Neural Network Optimization","authors":"Kehan Chen,&nbsp;Yixi Wei,&nbsp;Fei Yan","doi":"10.1002/qute.70394","DOIUrl":"https://doi.org/10.1002/qute.70394","url":null,"abstract":"<div>\u0000 \u0000 <p>This work proposes a Quantum Enhanced Genetic Algorithm (QEGA) that synergistically integrates three quantum-inspired operators: a Grover adaptive search-based selection mechanism, a swap test-guided crossover scheme, and a quantum walk-driven mutation process. By harnessing quantum amplitude amplification, entanglement recombination, and probabilistic exploration, QEGA pioneers the integration of quantum computational advantages into evolutionary optimization for quantum neural network parameters. The algorithm enhances global search effectiveness while accelerating convergence and exhibiting robust resistance to local optima. Experimental results on three benchmark datasets, i.e., Iris, the plane point set, and MNIST binary classification, demonstrate that QEGA outperforms classical genetic algorithms and quantum optimization algorithms from recent studies by a substantial margin on classification tasks. Specifically, it attains a peak accuracy of 98.67%, 99.16%, and 98.00% on the three datasets, respectively, accompanied by consistently smooth and monotonic convergence behaviors across the evaluated trials. These findings validate QEGA's potential as a versatile optimization framework for quantum neural network training and highlight the broader promise of quantum-enhanced evolutionary computation in practical machine learning applications.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753050","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":"Locally Passive, Globally Charged Quantum Batteries: Coherence-Controlled Work and the Robustness of the Stored Charge","authors":"Asad Ali,&nbsp;Saif Al-Kuwari,&nbsp;James Q. Quach","doi":"10.1002/qute.70397","DOIUrl":"https://doi.org/10.1002/qute.70397","url":null,"abstract":"<div>\u0000 \u0000 <p>A solvable charger–battery model is introduced in which quantum coherence controls both where a quantum battery's charge is stored and how robustly it survives noise. Charging converts the charger's coherence into charger–battery entanglement and splits the deposited work between a locally extractable part and a correlation-locked part accessible only through joint operations; for a qubit, the split obeys an exact complementarity, and at maximal coherence, the battery is locally passive with the entire charge locked in correlations. Robustness follows local accessibility: the stored energy and locally extractable work are population-based, immune to pure dephasing, and limited only by relaxation, with an energy half-life, whereas the correlation-locked work is fragile to both dephasing and relaxation. Dephasing, global and local depolarization, and amplitude damping are treated through a single gain–loss competition algebra, and the resulting storage lifetimes are made concrete with superconducting-transmon parameters.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753259","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":"Quantum-Enhanced Genetic Algorithm for Quantum Neural Network Optimization","authors":"Kehan Chen,&nbsp;Yixi Wei,&nbsp;Fei Yan","doi":"10.1002/qute.70394","DOIUrl":"https://doi.org/10.1002/qute.70394","url":null,"abstract":"<div>\u0000 \u0000 <p>This work proposes a Quantum Enhanced Genetic Algorithm (QEGA) that synergistically integrates three quantum-inspired operators: a Grover adaptive search-based selection mechanism, a swap test-guided crossover scheme, and a quantum walk-driven mutation process. By harnessing quantum amplitude amplification, entanglement recombination, and probabilistic exploration, QEGA pioneers the integration of quantum computational advantages into evolutionary optimization for quantum neural network parameters. The algorithm enhances global search effectiveness while accelerating convergence and exhibiting robust resistance to local optima. Experimental results on three benchmark datasets, i.e., Iris, the plane point set, and MNIST binary classification, demonstrate that QEGA outperforms classical genetic algorithms and quantum optimization algorithms from recent studies by a substantial margin on classification tasks. Specifically, it attains a peak accuracy of 98.67%, 99.16%, and 98.00% on the three datasets, respectively, accompanied by consistently smooth and monotonic convergence behaviors across the evaluated trials. These findings validate QEGA's potential as a versatile optimization framework for quantum neural network training and highlight the broader promise of quantum-enhanced evolutionary computation in practical machine learning applications.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753051","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":"Quantum Disease Surveillance Algorithm Based on Private Set Intersection","authors":"Jia-Yin Shi,&nbsp;Rong-Xue Xu,&nbsp;Dan-Dan Li,&nbsp;Ke-Jia Zhang,&nbsp;Long Zhang,&nbsp;Hong-Wei Sun","doi":"10.1002/qute.70399","DOIUrl":"https://doi.org/10.1002/qute.70399","url":null,"abstract":"<div>\u0000 \u0000 <p>Disease surveillance is vital for public health security, allowing early outbreak detection, reducing transmission, safeguarding population health, and aiding emergency response. This paper proposes a quantum disease surveillance algorithm based on private set intersection (PSI). Specifically, we use the BHT algorithm to solve the PSI problem and improve computational efficiency through candidate subset preprocessing and quantum parallel search mechanisms. It achieves a polynomial speedup over previous algorithms by reducing the communication complexity from <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>O</mi>\u0000 <mo>(</mo>\u0000 <mi>N</mi>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <annotation>$O(N)$</annotation>\u0000 </semantics></math> to <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>O</mi>\u0000 <mo>(</mo>\u0000 <mroot>\u0000 <mi>N</mi>\u0000 <mn>3</mn>\u0000 </mroot>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <annotation>$O(sqrt [3]{N})$</annotation>\u0000 </semantics></math> and optimizing the round complexity to a constant, thereby substantially reducing the data transmission overhead. Simulation experiments on the IBM quantum platform verify the correctness and feasibility of our algorithm. Security analysis shows that our algorithm effectively resists both insider and outsider attacks while satisfying privacy-preservation requirements in disease surveillance scenarios, specifically protecting the privacy of individual clients and the server.</p>\u0000 </div>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"9 8","pages":""},"PeriodicalIF":4.3,"publicationDate":"2026-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148753049","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}