Quantum Science and Technology最新文献_第6页

Application-level benchmarking of quantum computers using nonlocal game strategies 使用非局部博弈策略的量子计算机应用级基准测试

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-30 DOI: 10.1088/2058-9565/adf1c0

Jim Furches, Sarah Chehade, Kathleen Hamilton, Nathan Wiebe and Carlos Ortiz Marrero

引用次数: 0

State-agnostic approach to certifying electron–photon entanglement in electron microscopy 电子显微镜中证明电子-光子纠缠的状态不可知方法

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-30 DOI: 10.1088/2058-9565/adf004

Phila Rembold, Santiago Beltrán-Romero, Alexander Preimesberger, Sergei Bogdanov, Isobel C Bicket, Nicolai Friis, Elizabeth Agudelo, Dennis Rätzel and Philipp Haslinger

{"title":"State-agnostic approach to certifying electron–photon entanglement in electron microscopy","authors":"Phila Rembold, Santiago Beltrán-Romero, Alexander Preimesberger, Sergei Bogdanov, Isobel C Bicket, Nicolai Friis, Elizabeth Agudelo, Dennis Rätzel and Philipp Haslinger","doi":"10.1088/2058-9565/adf004","DOIUrl":"https://doi.org/10.1088/2058-9565/adf004","url":null,"abstract":"Transmission electron microscopes (TEMs) enable atomic-scale imaging and characterisation, driving advances across fields from materials science to biology. Quantum correlations, specifically entanglement, may provide a basis for novel hybrid sensing techniques to make TEMs compatible with sensitive samples prone to radiation damage. We present a protocol to certify entanglement between electrons and photons naturally arising from certain coherent cathodoluminescence processes. Using mutually unbiased bases in position and momentum, our method allows robust, state-agnostic entanglement verification and provides a lower bound on the entanglement of formation, enabling quantitative comparisons across platforms. Simulations under experiment-inspired conditions and preliminary experimental data highlight the feasibility of implementing this approach in modern TEM systems with optical specimen access. Our work integrates photonic quantum information techniques with electron microscopy. It establishes a foundation for entanglement-based imaging at the atomic scale, offering a potential pathway to reduce radiation exposure.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"14 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144747175","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Phonon-induced non-equilibrium dynamics in a single solid-state spin 单固体自旋声子诱导的非平衡动力学

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-27 DOI: 10.1088/2058-9565/adf092

Ariel Norambuena, Diego Tancara, Vicente Chomalí-Castro and Daniel Castillo

引用次数: 0

Decoherence time of the ground state spin of V ... V的基态自旋的退相干时间…

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-21 DOI: 10.1088/2058-9565/adeeb8

F T Tabesh, S Rahimi-Keshari and M Abdi

引用次数: 0

Identifying contributions of classical and quantum correlations to entropy production in non-equilibrium quantum processes 确定非平衡量子过程中经典和量子相关对熵产生的贡献

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-21 DOI: 10.1088/2058-9565/adee41

Xu-Cai Zhuang, Qing-Feng Xue, Qi Zhang, Rui Huang, Yun-Jie Xia and Zhong-Xiao Man

{"title":"Identifying contributions of classical and quantum correlations to entropy production in non-equilibrium quantum processes","authors":"Xu-Cai Zhuang, Qing-Feng Xue, Qi Zhang, Rui Huang, Yun-Jie Xia and Zhong-Xiao Man","doi":"10.1088/2058-9565/adee41","DOIUrl":"https://doi.org/10.1088/2058-9565/adee41","url":null,"abstract":"Entropy production plays a pivotal role in characterizing the inherent irreversibility of non-equilibrium quantum processes, and a thorough understanding of this concept holds immense potential for advancing the design of thermodynamically efficient quantum technologies. In this work, we demonstrate that the entropy production observed in multipartite open quantum systems, undergoing independent dissipations, arises from two sources: the local dynamics governing individual subsystems and the non-local correlations embedded within the system. The contributions of quantum correlations, as genuine quantum effects, to entropy production are identified explicitly. The revelation of the source of entropy production is substantiated by an analysis of its stochastic counterpart, derived from quantum trajectories. Furthermore, we propose an experimentally feasible scheme to isolate the contributions of both classical and quantum correlations to entropy production. The theoretical findings are simulated using an optical setup. Our work establishes a profound connection between thermodynamic and informational quantities, elucidating the source of irreversibility in the non-equilibrium process of multipartite quantum systems and the genuine quantum contribution therein.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"99 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144677387","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Non-positive energy quasidistributions in coherent collision models 相干碰撞模型中的非正能量准分布

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-21 DOI: 10.1088/2058-9565/aded2e

Marco Pezzutto, Gabriele De Chiara and Stefano Gherardini

引用次数: 0

Adaptive-depth randomized measurement for fermionic observables 费米子观测值的自适应深度随机测量

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-20 DOI: 10.1088/2058-9565/adeeb9

Kaiming Bian and Bujiao Wu

{"title":"Adaptive-depth randomized measurement for fermionic observables","authors":"Kaiming Bian and Bujiao Wu","doi":"10.1088/2058-9565/adeeb9","DOIUrl":"https://doi.org/10.1088/2058-9565/adeeb9","url":null,"abstract":"Accurate estimation of fermionic observables is essential for advancing quantum physics and chemistry. The fermionic classical shadow (FCS) method offers an efficient framework for estimating these observables without requiring a transformation into a Pauli basis for k-local Fermionic observables. However, the random matchgate circuits in FCS require linear-depth circuits with a brickwork structure, which presents significant challenges for near-term quantum devices with limited computational resources. To address this limitation, we introduce an adaptive-depth fermionic classical shadow (ADFCS) protocol designed to reduce the circuit depth while maintaining the sample complexity. Through theoretical analysis and numerical fitting, we establish that the required depth for approximating a fermionic observable H is upper bounded by when the locality k is a constant, where dint is the interaction distance of H and n is the number of qubits. We demonstrate the effectiveness of the ADFCS protocol through numerical experiments, which show similar accuracy to the traditional FCS method while requiring significantly fewer quantum resources. Additionally, we apply ADFCS to compute the expectation value of the Kitaev chain Hamiltonian, further validating its performance in practical scenarios. Our findings suggest that ADFCS enables more efficient quantum simulations when the locality k is constant, reducing circuit depth while preserving the sample complexity and offering a viable solution for near-term quantum devices.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"12 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144669723","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An accurate and efficient analytic model of fidelity under depolarizing noise oriented to large scale quantum system design 面向大尺度量子系统设计的去极化噪声下保真度精确高效分析模型

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-16 DOI: 10.1088/2058-9565/aded2f

Pau Escofet, Santiago Rodrigo, Artur Garcia-Sáez, Eduard Alarcón, Sergi Abadal and Carmen G Almudéver

{"title":"An accurate and efficient analytic model of fidelity under depolarizing noise oriented to large scale quantum system design","authors":"Pau Escofet, Santiago Rodrigo, Artur Garcia-Sáez, Eduard Alarcón, Sergi Abadal and Carmen G Almudéver","doi":"10.1088/2058-9565/aded2f","DOIUrl":"https://doi.org/10.1088/2058-9565/aded2f","url":null,"abstract":"Fidelity is one of the most valuable and commonly used metrics for assessing the performance of quantum circuits on error-prone quantum processors. Several approaches have been proposed to estimate circuit fidelity without executing it on quantum hardware, but they often face limitations in scalability or accuracy. In this work, we present a comprehensive theoretical framework to predict the fidelity of quantum circuits under depolarizing noise. Building on theoretical results, we propose an efficient fidelity estimation algorithm based on device calibration data. The method is thoroughly validated through simulation and execution on real hardware, demonstrating improved accuracy compared to state-of-the-art alternatives, with enhancements in prediction R2 ranging from 4.96% to 213.54%. The proposed approach provides a scalable and practical tool for benchmarking quantum hardware, comparing quantum software techniques such as compilation methods, obtaining computation bounds for quantum systems, and guiding hardware design decisions, making it a critical resource for developing and evaluating quantum computing technologies.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"16 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144645627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Experimental validation of boson sampling using detector binning 用探测器分束法进行玻色子采样的实验验证

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-16 DOI: 10.1088/2058-9565/adecbc

Malaquias Correa Anguita, Anita Camillini, Sara Marzban, Marco Robbio, Benoit Seron, Leonardo Novo and Jelmer J Renema

{"title":"Experimental validation of boson sampling using detector binning","authors":"Malaquias Correa Anguita, Anita Camillini, Sara Marzban, Marco Robbio, Benoit Seron, Leonardo Novo and Jelmer J Renema","doi":"10.1088/2058-9565/adecbc","DOIUrl":"https://doi.org/10.1088/2058-9565/adecbc","url":null,"abstract":"We experimentally demonstrate a testing strategy for boson samplers that is based on efficiently computable expressions for the output photon counting distributions binned over multiple optical modes. We apply this method to validate boson sampling experiments with three photons on a reconfigurable photonic chip, which implements a four-mode interferometer, analyzing 50 Haar-random unitary transformations while tuning photon indistinguishability via controlled delays. We show that for (nearly) indistinguishable photons, the experiment accurately reproduces the ideal boson sampling binned-mode distributions, which exhibit variations that depend both on the specific interferometer implemented as well as the choice of bin, confirming the usefulness of the method to diagnose imperfections such as partial distinguishability or imperfect chip control. Finally, we analyze the behavior of Haar-averaged binned-mode distributions in relation to indistinguishability and demonstrate analytically that its variance is proportional to the average of the square of the photons’ indistinguishability parameter. These findings highlight the central role of binning in boson sampling validation, offering a scalable and efficient framework for assessing multiphoton interference and experimental performance.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"95 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144645597","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Detrimental non-Markovian errors for surface code memory 表面代码存储器的有害非马尔可夫错误

IF 6.7 2区物理与天体物理

Quantum Science and Technology Pub Date : 2025-07-15 DOI: 10.1088/2058-9565/adebab

John F Kam, Spiro Gicev, Kavan Modi, Angus Southwell and Muhammad Usman

引用次数: 0