Advanced quantum technologies最新文献_第9页

Unconventional Photon Blockade in a Hybrid Optomechanical System with an Embedded Spin-Triplet 带有嵌入式自旋三重子的混合光机械系统中的非常规光子阻断技术

IF 4.4

Advanced quantum technologies Pub Date : 2024-09-02 DOI: 10.1002/qute.202400232

Yao Dong, Jing-jing Wang, Guo-Feng Zhang

{"title":"Unconventional Photon Blockade in a Hybrid Optomechanical System with an Embedded Spin-Triplet","authors":"Yao Dong, Jing-jing Wang, Guo-Feng Zhang","doi":"10.1002/qute.202400232","DOIUrl":"10.1002/qute.202400232","url":null,"abstract":"This research investigates the unconventional photon blockade in a hybrid optomechanical system with an embedded spin-triplet state. The self-homodyning interference between squeezed quantum fluctuations produced by the emitter and the coherent fraction from the driving laser results in two-photon suppression. Analytical solutions of the correlator equation and numerical simulations of the master equation reveal that modulated mechanical dissipation plays a crucial role in achieving strong single-photon blockade. In contrast to conventional cavity optomechanical systems, a second-order correlation function of <math>\u0000 <semantics>\u0000 <mrow>\u0000 <msup>\u0000 <mi>g</mi>\u0000 <mrow>\u0000 <mo>(</mo>\u0000 <mn>2</mn>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 </msup>\u0000 <mrow>\u0000 <mo>(</mo>\u0000 <mn>0</mn>\u0000 <mo>)</mo>\u0000 </mrow>\u0000 <mo>≃</mo>\u0000 <mn>0</mn>\u0000 </mrow>\u0000 <annotation>$g^{(2)}(0)simeq 0$</annotation>\u0000 </semantics></math> can be achieved with weak single-photon optomechanical coupling. By combining unconventional and conventional antibunching, the hybrid system achieves the convergence of maximal photon population, two-photon interference, and suppression of higher-order correlations. Additionally, the influence of the thermal noise on photon blockade is investigated, demonstrating greater robustness of the second-order correlation under weaker phonon-spin coupling.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"7 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142227429","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

Selective Temperature Sensing in Nanodiamonds Using Dressed States 纳米金刚石利用凹陷状态进行选择性温度传感

IF 4.4

Advanced quantum technologies Pub Date : 2024-09-02 DOI: 10.1002/qute.202400271

Nathaniel M. Beaver, Paul Stevenson

引用次数: 0

Purity-Assisted Zero-Noise Extrapolation for Quantum Error Mitigation 纯度辅助零噪声外推法用于量子误差缓解

IF 4.4

Advanced quantum technologies Pub Date : 2024-09-02 DOI: 10.1002/qute.202400150

Tian-Ren Jin, Yun-Hao Shi, Zheng-An Wang, Tian-Ming Li, Kai Xu, Heng Fan

{"title":"Purity-Assisted Zero-Noise Extrapolation for Quantum Error Mitigation","authors":"Tian-Ren Jin, Yun-Hao Shi, Zheng-An Wang, Tian-Ming Li, Kai Xu, Heng Fan","doi":"10.1002/qute.202400150","DOIUrl":"10.1002/qute.202400150","url":null,"abstract":"Quantum error mitigation aims to reduce errors in quantum systems and improve accuracy. Zero-noise extrapolation (ZNE) is a commonly used method, where noise is amplified, and the target expectation is extrapolated to a noise-free point. However, ZNE relies on assumptions about error rates based on the error model. In this study, a purity-assisted zero-noise extrapolation (pZNE) method is utilized to address limitations in error rate assumptions and enhance the extrapolation process. The pZNE is based on the Pauli diagonal error model implemented using the Pauli twirling technique. Although this method does not significantly reduce the bias of routine ZNE, it extends its effectiveness to a wider range of error rates where routine ZNE may face limitations. In addition, the practicality of the pZNE method is verified through numerical simulations and experiments on the online quantum computation platform, Quafu. Comparisons with routine ZNE and virtual distillation methods show that biases in extrapolation methods increase with error rates and may become divergent at high error rates. The bias of pZNE is slightly lower than routine ZNE, while its error rate threshold surpasses that of routine ZNE. Furthermore, for full density matrix information, the pZNE method is more efficient than the routine ZNE.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"7 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218909","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

Efficient Arbitrated Quantum Digital Signature with Multi-Receiver Verification 多接收器验证的高效仲裁量子数字签名

IF 4.4

Advanced quantum technologies Pub Date : 2024-09-02 DOI: 10.1002/qute.202400110

Siyu Xiong, Bangying Tang, Hui Han, Jinquan Huang, Mingqiang Bai, Fangzhao Li, Wanrong Yu, Zhiwen Mo, Bo Liu

{"title":"Efficient Arbitrated Quantum Digital Signature with Multi-Receiver Verification","authors":"Siyu Xiong, Bangying Tang, Hui Han, Jinquan Huang, Mingqiang Bai, Fangzhao Li, Wanrong Yu, Zhiwen Mo, Bo Liu","doi":"10.1002/qute.202400110","DOIUrl":"10.1002/qute.202400110","url":null,"abstract":"Quantum digital signature is used to authenticate the identity of the signer with information theoretical security while providing non-forgery and non-repudiation services. In traditional multi-receiver quantum digital signature schemes without an arbitrator, the transferability of one-to-one signature is always required to achieve unforgeability, with complicated implementation and heavy key consumption. In this article, an arbitrated quantum digital signature scheme is proposed, in which the signature can be verified by multiple receivers simultaneously, and meanwhile, the transferability of the signature is still kept. This scheme can be simplified performed to various quantum secure networks, due to the proposed efficient signature calculation procedure with low secure key consumption and low computation complexity, by employing one-time universal hashing algorithm and a one-time pad encryption scheme. The evaluation results show that this scheme uses at least two orders of magnitude less key than existing signature schemes with transferability when signing files of the same length with the same number of receivers and security parameter settings.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"7 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218913","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

Purity and Construction of Arbitrary Dimensional k $k$ -Uniform Mixed States 任意维 k$k$-Uniform 混合态的纯度与构建

IF 4.4

Advanced quantum technologies Pub Date : 2024-08-26 DOI: 10.1002/qute.202400245

Xiao Zhang, Shanqi Pang, Shao-Ming Fei, Zhu-Jun Zheng

引用次数: 0

Numerical Investigation of a Coupled Micropillar - Waveguide System for Integrated Quantum Photonic Circuits 用于集成量子光子电路的微柱-波导耦合系统的数值研究

IF 4.4

Advanced quantum technologies Pub Date : 2024-08-26 DOI: 10.1002/qute.202400195

Léo J. Roche, Fridtjof Betz, Yuhui Yang, Imad Limame, Ching-Wen Shih, Sven Burger, Stephan Reitzenstein

{"title":"Numerical Investigation of a Coupled Micropillar - Waveguide System for Integrated Quantum Photonic Circuits","authors":"Léo J. Roche, Fridtjof Betz, Yuhui Yang, Imad Limame, Ching-Wen Shih, Sven Burger, Stephan Reitzenstein","doi":"10.1002/qute.202400195","DOIUrl":"10.1002/qute.202400195","url":null,"abstract":"The on-chip resonant excitation of single quantum dots (QDs) via integrated microlasers represents an effective and scalable method for integrated quantum photonics applications based on on-demand single-photon emitters. In this study, the design and numerical optimization of the evanescent coupling between whispering gallery modes (WGMs) of a micropillar resonator and a nearby single-mode ridge waveguide in the Al(Ga)As/GaAs material system are presented. In this study, such systems are examined within a wavelength range of 930 nm, which is suitable for resonant excitation of typical self-assembled InGaAs quantum dots. In particular, the coupling and the transmitted optical power of a WGM resonator to a ridge waveguide are examined for a range of gap spacings, with the objective of optimizing the photon coupling efficiency and Q-factor of the monolithically integrated nanophotonic system. The findings of this study enable to identify the best device parameters for subsequent device fabrication. The findings establish a foundation for the production of highly effective photonic quantum circuits through the use of WGM microlasers integrated into evanescently coupled waveguide systems, including resonantly excited single quantum dots.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"7 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/qute.202400195","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218916","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}

引用次数: 0

Birefringent Spin-Photon Interface Generates Polarization Entanglement 双折射自旋光子界面产生偏振纠缠

IF 4.4

Advanced quantum technologies Pub Date : 2024-08-26 DOI: 10.1002/qute.202400193

Nikita Leppenen, Dmitry S. Smirnov

引用次数: 0

Error-Heralded and Deterministic Interconversion Between W State and Greenberger–Horne–Zeilinger State with Faithful Quantum Gates in Decoherence-Free-Subspace 退相干-自由子空间中具有忠实量子门的 W 态与格林伯格-霍恩-蔡林格态之间的错误预示和确定性相互转换

IF 4.4

Advanced quantum technologies Pub Date : 2024-08-20 DOI: 10.1002/qute.202400322

Fang-Fang Du, Ming Ma, Qiu-lin Tan

引用次数: 0

Analysis for Satellite-Based High-Dimensional Extended B92 and High-Dimensional BB84 Quantum Key Distribution 基于卫星的高维扩展 B92 和高维 BB84 量子密钥分发分析

IF 4.4

Advanced quantum technologies Pub Date : 2024-08-20 DOI: 10.1002/qute.202400149

Arindam Dutta, Muskan, Subhashish Banerjee, Anirban Pathak

{"title":"Analysis for Satellite-Based High-Dimensional Extended B92 and High-Dimensional BB84 Quantum Key Distribution","authors":"Arindam Dutta,  Muskan, Subhashish Banerjee, Anirban Pathak","doi":"10.1002/qute.202400149","DOIUrl":"https://doi.org/10.1002/qute.202400149","url":null,"abstract":"A systematic analysis of the advantages and challenges associated with the satellite-based implementation of the high dimensional extended B92 (HD-Ext-B92) and high-dimensional BB84 (HD-BB84) protocol is analyzed. The method used earlier for obtaining the key rate for the HD-Ext-B92 is modified here and subsequently the variations of the key rate, probability distribution of key rate (PDR), and quantum bit error rate (QBER) with respect to dimension and noise parameter of a depolarizing channel is studied using the modified key rate equation. Further, the variations of average key rate (per pulse) with zenith angle and link length in different weather conditions in day and night considering extremely low noise for dimension <math>\u0000 <semantics>\u0000 <mrow>\u0000 <mi>d</mi>\u0000 <mo>=</mo>\u0000 <mn>32</mn>\u0000 </mrow>\u0000 <annotation>${rm d}=32$</annotation>\u0000 </semantics></math> are investigated using elliptic beam approximation. The effectiveness of the HD-(extended) protocols used here in creating satellite-based quantum key distribution links (both up-link and down-link) are established by appropriately modeling the atmosphere and analyzing the variation of average key rates with the probability distribution of the transmittance (PDT). The analysis performed here has revealed that in higher dimensions, HD-BB84 outperforms HD-Ext-B92 in terms of both key rate and noise tolerance. However, HD-BB84 experiences a more pronounced saturation of QBER in high dimensions.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"7 11","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142642355","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

Stationary Quantum Entanglement and Asymmetric Steering in Cavity Magnonic System with Floquet Field and Coherent Feedback 具有浮凸场和相干反馈的腔体磁子系统中的静态量子纠缠和非对称转向

IF 4.4

Advanced quantum technologies Pub Date : 2024-08-20 DOI: 10.1002/qute.202400281

Si-Yu Guan, Hong-Fu Wang, Xuexi Yi

{"title":"Stationary Quantum Entanglement and Asymmetric Steering in Cavity Magnonic System with Floquet Field and Coherent Feedback","authors":"Si-Yu Guan, Hong-Fu Wang, Xuexi Yi","doi":"10.1002/qute.202400281","DOIUrl":"10.1002/qute.202400281","url":null,"abstract":"A scheme is proposed to prepare quantum entanglement and quantum steering between two indirectly coupled microwave cavity modes within a hybrid cavity magnonic system. The system consists of two microwave cavities individually coupled to a common YIG sphere driven by a two-tone Floquet field, while the output field of the second microwave cavity is fed back into the input port of the first microwave cavity via a coherent feedback loop. Floquet driving can effectively generate two interactions between magnons and photons. Magnons with higher dissipation can serve as a cooling channel for the two cavity modes. Optimal quantum correlations between the cavity modes can be achieved when the competition between these two interactions reaches equilibrium. Subsequently, a comparative analysis is performed on the evolution of quantum correlation with and without coherent feedback, revealing that the presence of a coherent feedback loop in the system not only significantly enhances entanglement and steering but also induces inherent asymmetry in quantum steering regardless of the decay rates within subsystems. Moreover, under the influence of the coherent feedback loop, the enhanced quantum correlations exhibit increased robustness against rising environmental temperatures. This work significantly expands the validity of implementation and provides a promising avenue for the preparation of stable quantum correlations.","PeriodicalId":72073,"journal":{"name":"Advanced quantum technologies","volume":"7 12","pages":""},"PeriodicalIF":4.4,"publicationDate":"2024-08-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142218918","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