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Schmidt quantum compressor 施密特量子压缩机
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-05-02 DOI: 10.1088/2058-9565/adcd99
Israel F Araujo, Hyeondo Oh, Nayeli A Rodríguez-Briones, Daniel K Park
{"title":"Schmidt quantum compressor","authors":"Israel F Araujo, Hyeondo Oh, Nayeli A Rodríguez-Briones, Daniel K Park","doi":"10.1088/2058-9565/adcd99","DOIUrl":"https://doi.org/10.1088/2058-9565/adcd99","url":null,"abstract":"This work introduces the Schmidt quantum compressor, an innovative approach to quantum data compression that leverages the principles of Schmidt decomposition to encode quantum information efficiently. In contrast to traditional variational quantum autoencoders, which depend on stochastic optimization and face challenges such as shot noise, barren plateaus, and non-convex optimization landscapes, our deterministic method substantially reduces the complexity and computational overhead of quantum data compression. We evaluate the performance of the compressor through numerical experiments, demonstrating its ability to achieve high fidelity in quantum state reconstruction compared to variational quantum algorithms. Furthermore, we demonstrate the practical utility of the Schmidt quantum compressor in one-class classification tasks.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"44 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143898282","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
Differentiated service entanglement routing for quantum networks 量子网络的差异化业务纠缠路由
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-28 DOI: 10.1088/2058-9565/adc82b
Hui Han, Bo Liu, Bang-Ying Tang, Si-Yu Xiong, Jin-Quan Huang, Wan-Rong Yu and Shu-Hui Chen
{"title":"Differentiated service entanglement routing for quantum networks","authors":"Hui Han, Bo Liu, Bang-Ying Tang, Si-Yu Xiong, Jin-Quan Huang, Wan-Rong Yu and Shu-Hui Chen","doi":"10.1088/2058-9565/adc82b","DOIUrl":"https://doi.org/10.1088/2058-9565/adc82b","url":null,"abstract":"The entanglement distribution networks with various topologies are mainly implemented by active wavelength multiplexing routing strategies, which directly transmit entangled photons between quantum network nodes. However, designing an entanglement routing scheme, which achieves the maximized network connections and the optimal overall network efficiency simultaneously, remains a huge challenge for quantum networks. In this article, we propose a differentiated service entanglement routing (DSER) scheme, which firstly finds out the lowest loss paths and supported wavelength channels with the tensor-based path searching algorithm, and then allocates the paired channels with the differentiated routing strategies. The evaluation results show that the proposed DSER scheme can be performed for constructing various large scale quantum networks.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"221 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143884630","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
Bosonic two-stroke heat engines with polynomial nonlinear coupling 多项式非线性耦合的玻色子二冲程热机
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-27 DOI: 10.1088/2058-9565/adcd98
G Chesi, C Macchiavello and M F Sacchi
{"title":"Bosonic two-stroke heat engines with polynomial nonlinear coupling","authors":"G Chesi, C Macchiavello and M F Sacchi","doi":"10.1088/2058-9565/adcd98","DOIUrl":"https://doi.org/10.1088/2058-9565/adcd98","url":null,"abstract":"We study the thermodynamics of two-stroke heat engines where two bosonic modes a and b are coupled by the general nonlinear interaction . By adopting the two-point measurement scheme we retrieve the distribution of the stochastic work, and hence the relative fluctuations of the extracted work up to the second order in the coupling θ. We identify the optimal interactions providing large average work with small fluctuations in the operational regime of the heat engine. Then, we consider the specific cases n = 2, m = 1 and n = 1, m = 2 up to the fourth order in θ. We optimize the average work and the signal-to-noise ratio over the frequencies of the bosonic modes and the temperatures of the reservoirs. Finally, we determine the thermodynamic uncertainty relations for these processes in relation with the order of the expansion of the unitary interaction Vθ.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"9 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143880430","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
Robust Mølmer-Sørensen gate against symmetric and asymmetric errors 抗对称和非对称误差的稳健Mølmer-Sørensen栅极
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-24 DOI: 10.1088/2058-9565/adce29
Wenhao Zhang, Gaoxiang Tang, Kecheng Liu, Xiao Yuan, Yangchao Shen, Yukai Wu and Xiao-Ming Zhang
{"title":"Robust Mølmer-Sørensen gate against symmetric and asymmetric errors","authors":"Wenhao Zhang, Gaoxiang Tang, Kecheng Liu, Xiao Yuan, Yangchao Shen, Yukai Wu and Xiao-Ming Zhang","doi":"10.1088/2058-9565/adce29","DOIUrl":"https://doi.org/10.1088/2058-9565/adce29","url":null,"abstract":"To achieve the entangling gate fidelity above the quantum error correction threshold, it is critical to suppress errors due to experimental imperfection. We consider the Mølmer-Sørensen gates in trapped-ion systems, and develop a general approach to suppress a family of noise sources that appeared as either symmetric or asymmetric errors. Using the time-average displacement minimization technique, both symmetric error and displacement-dependent part of the asymmetric errors are eliminated. Then, by analyzing the tangent space of displacement- independent errors, we obtain the analytic form of the generators of the correction operator to the remaining error terms. We then develop a compensation pulse to fully suppress the remaining displacement-independent errors. The effectiveness of our scheme is further verified by numerical analysis, through which we observe a significant reduction of entangling gate infidelity. Our findings enhance gate fidelity and robustness to noise for ion trap quantum computing.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"2 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872895","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
Truncation-free quantum simulation of pure-gauge compact QED using Josephson arrays 使用约瑟夫森阵列的纯规范紧致QED的无截断量子模拟
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-24 DOI: 10.1088/2058-9565/adce2a
Guy Pardo, Julian Bender, Nadav Katz and Erez Zohar
{"title":"Truncation-free quantum simulation of pure-gauge compact QED using Josephson arrays","authors":"Guy Pardo, Julian Bender, Nadav Katz and Erez Zohar","doi":"10.1088/2058-9565/adce2a","DOIUrl":"https://doi.org/10.1088/2058-9565/adce2a","url":null,"abstract":"Quantum simulation is one of the methods that have been proposed and used in practice to bypass computational challenges in the investigation of lattice gauge theories (LGTs). While most of the proposals rely on truncating the infinite dimensional Hilbert spaces that these models feature, we propose a truncation-free method based on the exact analogy between the local Hilbert space of lattice quantum electrodynamics and that of a Josephson junction. We provide several proposals, mostly semi-analog, arranged according to experimental difficulty. Our method can simulate a quasi-2D system of up to plaquettes, and we present an approximate method that can simulate the fully-2D theory, but is more demanding experimentally and not immediately feasible. This sets the ground for analog quantum simulation of LGTs with superconducting circuits, in a completely Hilbert space truncation-free procedure, for continuous gauge groups.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"24 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872894","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
Qibosoq: an open-source framework for quantum circuit RFSoC programming Qibosoq：量子电路RFSoC编程的开源框架
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-24 DOI: 10.1088/2058-9565/adcd97
Rodolfo Carobene, Alessandro Candido, Javier Serrano, Alvaro Orgaz-Fuertes, Andrea Giachero and Stefano Carrazza
{"title":"Qibosoq: an open-source framework for quantum circuit RFSoC programming","authors":"Rodolfo Carobene, Alessandro Candido, Javier Serrano, Alvaro Orgaz-Fuertes, Andrea Giachero and Stefano Carrazza","doi":"10.1088/2058-9565/adcd97","DOIUrl":"https://doi.org/10.1088/2058-9565/adcd97","url":null,"abstract":"We present Qibosoq, an open-source server-side software package designed for radio frequency system on chip (RFSoC) for executing arbitrary pulse sequences and algorithms on self-hosted quantum processing units using only open-source software. Qibosoq connects the RFSoC firmware provided by Qick, a Quantum Instrumentation Control Kit, with Qibo, a quantum computing middleware framework that enables both experimental and gate-based applications. It simplifies the work of experimentalists and developers by managing client-server communication protocols, implementing tests, and validation procedures, thereby reducing the complexity of experimental setups. The client-side integration is achieved with dedicated drivers implemented in Qibolab, the specialized software module of Qibo for quantum hardware control. Therefore, this setup provides a seamless mechanism to deploy circuit-based algorithms on custom self-hosted quantum hardware platforms controlled by RFSoC electronics.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"91 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143872893","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
Sensing multiatom networks in cavities via photon-induced excitation resonance 利用光子诱导激发共振传感腔内多原子网络
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-23 DOI: 10.1088/2058-9565/adcae3
Pritam Chattopadhyay, Avijit Misra, Saikat Sur, David Petrosyan, Gershon Kurizki
{"title":"Sensing multiatom networks in cavities via photon-induced excitation resonance","authors":"Pritam Chattopadhyay, Avijit Misra, Saikat Sur, David Petrosyan, Gershon Kurizki","doi":"10.1088/2058-9565/adcae3","DOIUrl":"https://doi.org/10.1088/2058-9565/adcae3","url":null,"abstract":"We explore the distribution in space and time of a single-photon excitation shared by a network of dipole–dipole interacting atoms that are also coupled to a common photonic field mode. Time-averaged distributions reveal partial trapping of the excitation near the initially excited atom. This trapping is associated with resonances of the excitation at crossing points of the photon-dressed energy eigenvalues of the network. The predicted <italic toggle=\"yes\">photon-induced many-atom trapped excitation</italic> (PIMATE) is sensitive to atomic position disorder which broadens the excitation resonances and transforms them to avoided crossings. PIMATE is shown to allow highly effective and accurate sensing of <italic toggle=\"yes\">multi-atom</italic> networks and their disorder.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"37 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143862942","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
Optical nonreciprocity induced by quantum squeezing in temperature sensitive optomechanical systems 温敏光力学系统中量子压缩引起的光非互易
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-23 DOI: 10.1088/2058-9565/adcbcf
Jun-Cong Zheng, Xiao-Wei Zheng, Xin-Lei Hei, Yi-Fan Qiao, Xiao-Yu Yao, Xue-Feng Pan, Yu-Meng Ren, Xiao-Wen Huo, Peng-Bo Li
{"title":"Optical nonreciprocity induced by quantum squeezing in temperature sensitive optomechanical systems","authors":"Jun-Cong Zheng, Xiao-Wei Zheng, Xin-Lei Hei, Yi-Fan Qiao, Xiao-Yu Yao, Xue-Feng Pan, Yu-Meng Ren, Xiao-Wen Huo, Peng-Bo Li","doi":"10.1088/2058-9565/adcbcf","DOIUrl":"https://doi.org/10.1088/2058-9565/adcbcf","url":null,"abstract":"We investigate single-photon transmission and the statistical properties of photon correlations in <inline-formula>\u0000<tex-math><?CDATA $chi^{(2)}$?></tex-math><mml:math overflow=\"scroll\"><mml:mrow><mml:msup><mml:mi>χ</mml:mi><mml:mrow><mml:mo stretchy=\"false\">(</mml:mo><mml:mn>2</mml:mn><mml:mo stretchy=\"false\">)</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math><inline-graphic xlink:href=\"qstadcbcfieqn1.gif\"></inline-graphic></inline-formula> microring optomechanical systems, where optical nonreciprocity is induced by directional quantum squeezing. Due to the presence of thermal phonons in the mechanical resonator, the system is highly sensitive to temperature changes. Our numerical simulations show that as the thermal phonons vary from 0 to 10, the isolation ratio of single-photon transmission decreases from 22.2 dB to 1.1 dB (or from −23 dB to −3.3 dB). Additionally, the statistical properties of photon correlations transition from exhibiting a strong bunching effect to a weak bunching effect. Moreover, the parametric amplification component enhances the device’s temperature response, distinguishing it from other similar nonreciprocal devices. Our protocol suggests a potential application for nonreciprocal setups in precise temperature measurement at ultralow temperatures, thereby enriching quantum networks and quantum information processing.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"7 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863004","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
Spatially parallel decoding for multi-qubit lattice surgery 多量子位点阵手术的空间并行解码
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-23 DOI: 10.1088/2058-9565/adc6b6
Sophia Fuhui Lin, Eric C Peterson, Krishanu Sankar, Prasahnt Sivarajah
{"title":"Spatially parallel decoding for multi-qubit lattice surgery","authors":"Sophia Fuhui Lin, Eric C Peterson, Krishanu Sankar, Prasahnt Sivarajah","doi":"10.1088/2058-9565/adc6b6","DOIUrl":"https://doi.org/10.1088/2058-9565/adc6b6","url":null,"abstract":"Running quantum algorithms protected by quantum error correction requires a real time, classical decoder. To prevent the accumulation of a backlog, this decoder must process syndromes from the quantum device at a faster rate than they are generated. Most prior work on real time decoding has focused on an isolated logical qubit encoded in the surface code. However, for surface code, quantum programs of utility will require multi-qubit interactions performed via lattice surgery. A large merged patch can arise during lattice surgery—possibly as large as the entire device. This puts a significant strain on a real time decoder, which must decode errors on this merged patch and maintain the level of fault-tolerance that it achieves on isolated logical qubits. These requirements are relaxed by using spatially parallel decoding, which can be accomplished by dividing the physical qubits on the device into multiple overlapping groups and assigning a decoder module to each. We refer to this approach as <italic toggle=\"yes\">spatially parallel windows</italic>. While previous work has explored similar ideas, none have addressed system-specific considerations pertinent to the task or the constraints from using hardware accelerators. In this work, we demonstrate how to configure spatially parallel windows, so that the scheme (1) is compatible with hardware accelerators, (2) supports general lattice surgery operations, (3) maintains the fidelity of the logical qubits, and (4) meets the throughput requirement for real time decoding. Furthermore, our results reveal the importance of optimally choosing the buffer width to achieve a balance between accuracy and throughput—a decision that should be influenced by the device’s physical noise.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"13 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143863005","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
Gate teleportation-assisted routing for quantum algorithms 量子算法的门远传辅助路由选择
IF 6.7 2区 物理与天体物理
Quantum Science and Technology Pub Date : 2025-04-21 DOI: 10.1088/2058-9565/adcae4
Aravind Plathanam Babu, Oskari Kerppo, Andrés Muñoz-Moller, Majid Haghparast and Matti Silveri
{"title":"Gate teleportation-assisted routing for quantum algorithms","authors":"Aravind Plathanam Babu, Oskari Kerppo, Andrés Muñoz-Moller, Majid Haghparast and Matti Silveri","doi":"10.1088/2058-9565/adcae4","DOIUrl":"https://doi.org/10.1088/2058-9565/adcae4","url":null,"abstract":"The limited qubit connectivity of quantum processors poses a significant challenge in deploying practical algorithms and logical gates, necessitating efficient qubit mapping and routing strategies. When implementing a gate that requires additional connectivity beyond the native connectivity, the qubit state must be moved to a nearby connected qubit to execute the desired gate locally. This is typically achieved using a series of SWAP gates creating a SWAP path. However, routing methods relying on SWAP gates often lead to increased circuit depth and gate count, motivating the need for alternative approaches. This work explores the potential of teleported gates to improve qubit routing efficiency, focusing on implementation within specific hardware topologies and benchmark quantum algorithms. We propose a routing method that is assisted by gate teleportation. It establishes additional connectivity using gate teleportation paths through available unused qubits, termed auxiliary qubits, within the topology. To optimize this approach, we have developed an algorithm to identify the best gate teleportation connections, considering their potential to reduce the depth of the circuit and address possible errors that may arise from the teleportation paths. Finally, we demonstrate depth reduction with gate teleportation-assisted routing in various benchmark algorithms, including case studies on the compilation of the Deutsch–Jozsa algorithm and the quantum approximation optimization algorithm for heavy-hexagon topology used in IBM 127-qubit Eagle r3 processors. Our benchmark results show a 10%–25% depth reduction in the routing of selected algorithms compared to regular routing without using teleported gates.","PeriodicalId":20821,"journal":{"name":"Quantum Science and Technology","volume":"7 1","pages":""},"PeriodicalIF":6.7,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143857440","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
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