Frontiers in Quantum Science and Technology最新文献

Quantum technologies with Rydberg atoms 利用雷德贝格原子的量子技术

Frontiers in Quantum Science and Technology Pub Date : 2024-07-12 DOI: 10.3389/frqst.2024.1426216

S. Barik, Aishwarya Thakur, Yashica Jindal, Silpa B. S, Sanjukta Roy

引用次数: 0

Editorial: Responsible research and innovation in quantum science and technologies 社论：量子科技领域负责任的研究与创新

Frontiers in Quantum Science and Technology Pub Date : 2024-07-04 DOI: 10.3389/frqst.2024.1424698

M. Chiofalo, Augusto Smerzi, Marisa Michelini

引用次数: 0

Art makes quantum intuitive 艺术让量子变得直观

Frontiers in Quantum Science and Technology Pub Date : 2024-05-17 DOI: 10.3389/frqst.2024.1397130

Grégoire Cattan, Karolina Duś, Slawomir Kusmia, Tomasz Stopa

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Precise micromotion compensation of a tilted ion chain 倾斜离子链的精确微动补偿

Frontiers in Quantum Science and Technology Pub Date : 2024-04-22 DOI: 10.3389/frqst.2024.1352800

Craig Hogle, Ashlyn D. Burch, J. Sterk, Matthew N. H. Chow, Megan Ivory, D. Lobser, Peter Maunz, Jay Van Der Wall, C. Yale, Susan M. Clark, D. Stick, M. Revelle

引用次数: 0

QREChem: quantum resource estimation software for chemistry applications QREChem:用于化学应用的量子资源估计软件

Frontiers in Quantum Science and Technology Pub Date : 2023-11-10 DOI: 10.3389/frqst.2023.1232624

Matthew Otten, Byeol Kang, Dmitry Fedorov, Joo-Hyoung Lee, Anouar Benali, Salman Habib, Stephen K. Gray, Yuri Alexeev

{"title":"QREChem: quantum resource estimation software for chemistry applications","authors":"Matthew Otten, Byeol Kang, Dmitry Fedorov, Joo-Hyoung Lee, Anouar Benali, Salman Habib, Stephen K. Gray, Yuri Alexeev","doi":"10.3389/frqst.2023.1232624","DOIUrl":"https://doi.org/10.3389/frqst.2023.1232624","url":null,"abstract":"As quantum hardware continues to improve, more and more application scientists have entered the field of quantum computing. However, even with the rapid improvements in the last few years, quantum devices, especially for quantum chemistry applications, still struggle to perform calculations that classical computers could not calculate. In lieu of being able to perform specific calculations, it is important have a systematic way of estimating the resources necessary to tackle specific problems. Standard arguments about computational complexity provide hope that quantum computers will be useful for problems in quantum chemistry but obscure the true impact of many algorithmic overheads. These overheads will ultimately determine the precise point when quantum computers will perform better than classical computers. We have developed QREChem to provide logical resource estimates for ground state energy estimation in quantum chemistry through a Trotter-based quantum phase estimation approach. QREChem provides resource estimates which include the specific overheads inherent to problems in quantum chemistry by including heuristic estimates of the number of Trotter steps and number of necessary ancilla, allowing for more accurate estimates of the total number of gates. We utilize QREChem to provide logical resource estimates for a variety of small molecules in various basis sets, obtaining estimates in the range of 10 7 –10 15 for total number of T gates. We also determine estimates for the FeMoco molecule and compare all estimates to other resource estimation tools. Finally, we compare the total resources, including hardware and error correction overheads, demonstrating the need for fast error correction cycle times.","PeriodicalId":486621,"journal":{"name":"Frontiers in Quantum Science and Technology","volume":" 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191565","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

Postponing the decay of entanglement and quantum coherence for maximally entangled mixed states under the action of correlated noise channels 在相关噪声通道作用下延缓最大纠缠混合态的纠缠和量子相干性衰减

Frontiers in Quantum Science and Technology Pub Date : 2023-11-09 DOI: 10.3389/frqst.2023.1207793

Natasha Awasthi, Ashutosh Singh, Dheeraj Kumar Joshi

引用次数: 0

Eigengame: a primer to introduce wave functions and probabilities 介绍波函数和概率的入门读物

Frontiers in Quantum Science and Technology Pub Date : 2023-10-26 DOI: 10.3389/frqst.2023.1249325

Francesc Sabater, Carles Calero, Bruno Juliá-Díaz

引用次数: 0

PANSATZ: pulse-based ansatz for variational quantum algorithms PANSATZ:变分量子算法的脉冲分析

Frontiers in Quantum Science and Technology Pub Date : 2023-10-09 DOI: 10.3389/frqst.2023.1273581

Dekel Meirom, Steven H. Frankel

{"title":"PANSATZ: pulse-based ansatz for variational quantum algorithms","authors":"Dekel Meirom, Steven H. Frankel","doi":"10.3389/frqst.2023.1273581","DOIUrl":"https://doi.org/10.3389/frqst.2023.1273581","url":null,"abstract":"Quantum computers promise a great computational advantage over classical computers, which might help solve various computational challenges such as the simulation of complicated quantum systems, finding optimum in large optimization problems, and solving large-scale linear algebra problems. Current available quantum devices have only a limited amount of qubits and a high level of noise, limiting the size of problems that can be solved accurately with those devices. Variational quantum algorithms (VQAs) have emerged as a leading strategy to address these limitations by optimizing cost function based on measurement results of shallow depth circuits. Recently, various pulse engineering methods were suggested in order to improve VQA results, including optimizing pulse parameters instead of gate angles as part of the VQA optimization process. In this paper, we suggest a novel pulse-based ansatz, which is parameterized mainly by pulses’ duration of pre-defined pulse structures. This ansatz structure provides relatively low amounts of optimization parameters while maintaining high expressibility, allowing fast convergence. In addition, the ansatz has structured adaptivity to the entanglement level required by the problem, allowing low noise and accurate results. We tested this ansatz against quantum chemistry problems. Specifically, finding the ground-state energy associated with the electron configuration problem, using the variational quantum eigensolver (VQE) algorithm for several different molecules. We manage to achieve chemical accuracy both in simulation for several molecules and on one of IBM’s NISQ devices for the H 2 molecule in the STO-3G basis, without the need for extensive error mitigation. Our results are compared to a common gate-based ansatz and show better accuracy and significant latency reduction—up to 7× shorter ansatz schedules.","PeriodicalId":486621,"journal":{"name":"Frontiers in Quantum Science and Technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135095501","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: 5