Advanced quantum technologies最新文献

{"title":"Issue Information (Adv. Quantum Technol. 4/2025)","authors":"","doi":"10.1002/qute.202570009","DOIUrl":"10.1002/qute.202570009","url":null,"abstract":"","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 4","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202570009","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793693","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":"Sliding Mode Control-Like Accelerated Coherent Ising Machine","authors":"Zhi-guo Nie,&nbsp;Ruo-xing Guo,&nbsp;Chen-rui Fan,&nbsp;Xing-yu Wu,&nbsp;Bo Lu,&nbsp;Cong Cao,&nbsp;Yong-pan Gao","doi":"10.1002/qute.202500057","DOIUrl":"10.1002/qute.202500057","url":null,"abstract":"<p>Coherent Ising Machine (CIM) emerge as powerful tools for solving large-scale combinatorial optimization problems by mapping them to the ground state search of the Ising model. Traditional CIM models face two major challenges when addressing large-scale problems: slowness in convergence and susceptibility to local minima. To address these limitations, the Sliding Mode Control-Like Coherent Ising Machine (SMCL-CIM) integrates sliding mode control principles into the feedback mechanism of the CIM, inspired by classical dynamic control methods. Experimental results on random graphs and G-set benchmarks demonstrate that for the max-cut problem, SMCL-CIM achieves an approximately 79. 93% reduction in solution time while improving solution accuracy by 11.4%–15.3% under the same simulation conditions. This scheme provides an efficient and scalable approach to combinatorial optimization, thereby facilitating the broader application of CIM.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 5","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944732","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 Amplitude-Phase Judgment Circuits for Full Quantization Algorithms","authors":"Ziming Dong,&nbsp;Hao Wang,&nbsp;Yi Zeng,&nbsp;Sheng Chang","doi":"10.1002/qute.202400596","DOIUrl":"10.1002/qute.202400596","url":null,"abstract":"<p>Quantum algorithms are a crucial component of quantum computing. One key open question in this field is whether quantum algorithms (QAs) can be fully executed on a quantum computer. Many QAs currently rely on classical computers to evaluate conditional statements that quantum systems alone cannot assess. This dependency necessitates information transmission between quantum and classical systems, thus imposing performance limitations. To enable autonomous conditional evaluations on quantum systems, a quantum amplitude-phase judgment circuit (QAPJC), comprising primarily quantum inequality judgment circuits and equality judgment logic blocks, is proposed. This configuration achieves conditional judgment on quantum computers while imparting physical significance to the judgment process. The feasibility of the circuits is verified on a superconducting quantum computer. Comparative experiments confirm that QAPJC preserves the original performance of QAs while demonstrating the inherent advantages of quantum computing. This circuit can implement logic judgment functions akin to classical circuits and serve as a subroutine for various QAs, promoting their implementation in the noisy intermediate-scale quantum (NISQ) era.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058084","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":"Magnetic Field Sensitivity Optimization of Negatively Charged Boron Vacancy Defects in hBN (Adv. Quantum Technol. 4/2025)","authors":"Benjamin Whitefield,&nbsp;Milos Toth,&nbsp;Igor Aharonovich,&nbsp;Jean-Philippe Tetienne,&nbsp;Mehran Kianinia","doi":"10.1002/qute.202570008","DOIUrl":"10.1002/qute.202570008","url":null,"abstract":"<p>The image depicts the optical excitation of negatively charged boron vacancies in a hexagonal boron nitride lattice. The lattice is positioned on top of a gold stripe which applies a radio frequency used for optically detected magnetic resonance. The magnet placed on the lattice represents the capability of precise magnetic field sensing available with this spin control technique. More in article number 2300118, Igor Aharonovich 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 4","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202570008","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793692","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":"Quantum Sensing","authors":"Tongcang Li,&nbsp;Ren-bao Liu,&nbsp;Chong Zu","doi":"10.1002/qute.202500120","DOIUrl":"10.1002/qute.202500120","url":null,"abstract":"","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 4","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143793687","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":"Nonreciprocal Entanglement in Spinning Cavity Magnomechanical System with Coherent Feedback Loop","authors":"Cheng-Zhi Gao,&nbsp;Guo-Qing Liu,&nbsp;Nan Wang,&nbsp;Lin Yu,&nbsp;Ai-Dong Zhu","doi":"10.1002/qute.202500063","DOIUrl":"10.1002/qute.202500063","url":null,"abstract":"<p>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.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 5","pages":""},"PeriodicalIF":4.3,"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}

{"title":"Single-Mode Phase-Conjugate Receiver for Microwave Quantum Illumination with a Lossy Optical Memory","authors":"Sangwoo Jeon,&nbsp;Jihwan Kim,&nbsp;Duk Y. Kim,&nbsp;Zaeill Kim,&nbsp;Taek Jeong,&nbsp;Su-Yong Lee","doi":"10.1002/qute.202400627","DOIUrl":"10.1002/qute.202400627","url":null,"abstract":"<p>Microwave quantum illumination with entangled pairs of microwave signal and optical idler modes can achieve sub-optimal performance with joint measurement of the signal and idler modes. Here, a testbed for microwave quantum illumination is proposed with an optical memory simulated with a delay line in the idler mode. It provides the amount of input two-mode squeezing necessary to compensate for the loss of optical memory while maintaining a quantum advantage over a coherent state. When the memory is lossy, the input two-mode squeezing has to be higher through high cooperativity in the optical mode. Under the testbed, a single-mode phase conjugate receiver is proposed consisting of a low-reflectivity beam splitter, an electro-optomechanical phase conjugator, and a photon number-resolving detector. The performance of the newly proposed receiver approaches the sub-optimal quantum advantage of 3 dB. Furthermore, the receiver achieves the quantum advantage even with an on-off detection while being robust against the loss of the memory.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062422","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":"Combining Squeezing and Transition Sensitivity Resources for Quantum Metrology by Asymmetric Non-Linear Rabi Model","authors":"Zu-Jian Ying","doi":"10.1002/qute.202400630","DOIUrl":"10.1002/qute.202400630","url":null,"abstract":"<p>Squeezing and transition criticality are two main sensitivity resources for quantum metrology (QM), combination of them may yield an upgraded metrology protocol for higher upper bound of measurement precision (MP). The present work shows that such a combination is feasible in light–matter interactions by a realizable asymmetric non-linear quantum Rabi model (QRM). Indeed, the non-linear coupling possesses a squeezing resource for diverging MP while the non-monotonous degeneracy lifting by the asymmetries induces an additional tunable transition which further enhances the MP by several orders, as demonstrated by the quantum Fisher information (QFI). The resource combination not only leads to cooperative boosts to the divergence of QFI but also brings divergence compensation with the merit of globally high MP. Moreover, the protocol is immune from the problem of diverging preparation time of probe state that may hinder the conventional linear QRM in application of QM. This work establishes a paradigmatic case of combining different sensitivity resources to manipulate QM and maximize MP.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 7","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144635677","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":"Rabi-Robustness Multiqubit Geometric Gate with Rydberg Atoms","authors":"Jin-Feng Wei,&nbsp;Lv-Yun Wang,&nbsp;Lei-Lei Yan,&nbsp;Mang Feng,&nbsp;Shi-Lei Su","doi":"10.1002/qute.202400614","DOIUrl":"10.1002/qute.202400614","url":null,"abstract":"<p>Due to the limitation of quantum resources, direct synthesis of a multiqubit logic gate can significantly improve the efficiency of practical quantum information processing. In this article, an enhanced-robustness gate scheme is proposed to implement three-qubit controlled gates, i.e., <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>C</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <mi>U</mi>\u0000 </mrow>\u0000 <annotation>${rm C}_2{rm U}$</annotation>\u0000 </semantics></math> and <span></span><math>\u0000 <semantics>\u0000 <msub>\u0000 <mi>CU</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <annotation>${rm CU}_2$</annotation>\u0000 </semantics></math>, by using resonant dipole–dipole exchange interaction-induced adiabatic evolutions along with the dark state dynamics and super-robust pulse sequences in Rydberg atoms. Such a gate scheme can execute arbitrary single-qubit operations on the target qubit with pure geometric phase and is especially suitable for the case where the decoherence is not very obvious. Taking <span></span><math>\u0000 <semantics>\u0000 <mrow>\u0000 <msub>\u0000 <mi>C</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <mi>NOT</mi>\u0000 </mrow>\u0000 <annotation>${rm C}_2{rm NOT}$</annotation>\u0000 </semantics></math> and <span></span><math>\u0000 <semantics>\u0000 <msub>\u0000 <mi>CNOT</mi>\u0000 <mn>2</mn>\u0000 </msub>\u0000 <annotation>${rm CNOT}_2$</annotation>\u0000 </semantics></math> as typical examples, various experimental imperfections are studied, including the Doppler effect, spontaneous emission of the intermediate state, laser phase noise, and fluctuations of interaction and external fields. Therefore, with the increasing demand for multiqubit gates, the proposal provides a more promising alternative for future fault-tolerant and scalable quantum computation.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145062849","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":"Enhancing Exceptional-Point-Based Sensing via Pump Gain in Reversed-Dissipation Cavity Optomechanics","authors":"Wei Niu,&nbsp;Tie Wang,&nbsp;Shou Zhang,&nbsp;Hong-Fu Wang","doi":"10.1002/qute.202400665","DOIUrl":"10.1002/qute.202400665","url":null,"abstract":"<p>An enhancing exceptional-point-based (EP-based) sensing scheme with the pump gain in the reversed-dissipation regime is proposed. It is showed that EP-based sensing has excellent signal-to-noise ratio (SNR) at the balanced total gain and loss. Meanwhile, this scheme is adaptable to a wide range of sensing targets represented by the perturbations, encompassing the isolated resonance, the loss (gain), and the coupling mechanism. Compared with conventional sensing schemes, this scheme significantly boosts the sensitivity coefficient across all types of perturbations, especially in small perturbations. Particularly, the readout process can be simplified for perturbations involving loss (gain) and coupling mechanism. Moreover, the robustness against noise for EP-based sensing is confirmed through an analysis of the output spectra. This work reveals the condition for realizing the EP-based sensing in reversed-dissipation regime, and paves the way for the development of multifunctional and high-sensitivity sensors within various non-Hermitian quantum systems. It also opens new avenues for the creation of compact, integrated, and readout-friendly optomechanical sensors.</p>","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"8 9","pages":""},"PeriodicalIF":4.3,"publicationDate":"2025-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145057959","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}