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检索条件"机构=Department of Combinatorics and Optimization and Institute for Quantum Computing"
234 条 记 录,以下是101-110 订阅
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Improved classical and quantum algorithms for subset-sum
arXiv
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arXiv 2020年
作者: Bonnetain, Xavier Bricout, Rémi Schrottenloher, André Shen, Yixin Institute for Quantum Computing Department of Combinatorics and Optimization University of Waterloo WaterlooON Canada Sorbonne Université Collège Doctoral ParisF-75005 France Inria France Université de Paris IRIF CNRS ParisF-75013 France
We present new classical and quantum algorithms for solving random subset-sum instances. First, we improve over the Becker-Coron-Joux algorithm (EUROCRYPT 2011) from Oe (20.291n) downto Oe (20.283n), using more genera... 详细信息
来源: 评论
Flag fault-tolerant error correction, measurement, and quantum computation for cyclic Calderbank-Shor-Steane codes
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Physical Review A 2020年 第1期101卷 012342-012342页
作者: Theerapat Tansuwannont Christopher Chamberland Debbie Leung Institute for Quantum Computing and Department of Physics and Astronomy University of Waterloo Waterloo Ontario Canada N2L 3G1 IBM T. J. Watson Research Center Yorktown Heights New York 10598 USA Institute for Quantum Computing and Department of Combinatorics and Optimization University of Waterloo Waterloo Ontario Canada N2L 3G1 Perimeter Institute for Theoretical Physics Waterloo Ontario Canada N2L 2Y5
Flag qubits have recently been proposed in syndrome extraction circuits to detect high-weight errors arising from fewer faults. The use of flag qubits allows the construction of fault-tolerant protocols with the fewes... 详细信息
来源: 评论
Simulating 2D Effects in Lattice Gauge Theories on a quantum Computer
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PRX quantum 2021年 第3期2卷 030334-030334页
作者: Danny Paulson Luca Dellantonio Jan F. Haase Alessio Celi Angus Kan Andrew Jena Christian Kokail Rick van Bijnen Karl Jansen Peter Zoller Christine A. Muschik Institute for Quantum Computing University of Waterloo Waterloo Ontario N2L 3G1 Canada Department of Physics and Astronomy University of Waterloo Waterloo Ontario N2L 3G1 Canada Institute of Theoretical Physics and IQST Universität Ulm Albert-Einstein-Allee 11 Ulm D-89069 Germany Departament de Física Universitat Autònoma de Barcelona Bellaterra E-08193 Spain Center of Quantum Physics University of Innsbruck Innsbruck A-6020 Austria Institute for Quantum Optics and Quantum Information of the Austrian Academy of Sciences Innsbruck A-6020 Austria Department of Combinatorics and Optimization University of Waterloo Waterloo Ontario N2L 3G1 Canada NIC DESY Zeuthen Platanenallee 6 Zeuthen 15738 Germany Perimeter Institute for Theoretical Physics Waterloo Ontario N2L 2Y5 Canada
quantum computing is in its greatest upswing, with so-called noisy-intermediate-scale-quantum devices heralding the computational power to be expected in the near future. While the field is progressing toward quantum ... 详细信息
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Pauli partitioning with respect to gate sets
arXiv
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arXiv 2019年
作者: Jena, Andrew Genin, Scott Mosca, Michele Department of Combinatorics and Optimization University of Waterloo Institute for Quantum Computing University of Waterloo OTI Lumionics TorontoON Canada Department of Combinatorics and Optimization University of Waterloo WaterlooON Canada Institute for Quantum Computing University of Waterloo WaterlooON Canada Perimeter Institute for Theoretical Physics WaterlooON Canada
Measuring the expectation value of Pauli operators on prepared quantum states is a fundamental task in a multitude of quantum algorithms. Simultaneously measuring sets of operators allows for fewer measurements and an... 详细信息
来源: 评论
On the mixed-unitary rank of quantum channels
arXiv
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arXiv 2020年
作者: Girard, Mark Leung, Debbie Levick, Jeremy Li, Chi-Kwong Paulsen, Vern Poon, Yiu Tung Watrous, John Institute for Quantum Computing University of Waterloo School of Computer Science University of Waterloo Department of Combinatorics & Optimization University of Waterloo Perimeter Institute for Theoretical Physics Waterloo Canada Department of Mathematics & Statistics University of Guelph Department of Mathematics College of William and Mary Department of Pure Mathematics University of Waterloo Department of Mathematics Iowa State University Center for Quantum Computing Peng Cheng Laboratory Canadian Institute for Advanced Research Toronto Canada
In the theory of quantum information, the mixed-unitary quantum channels, for any positive integer dimension n, are those linear maps that can be expressed as a convex combination of conjugations by n × n complex... 详细信息
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Rigidity of superdense coding
arXiv
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arXiv 2020年
作者: Nayak, Ashwin Yuen, Henry Department of Combinatorics and Optimization Institute for Quantum Computing University of Waterloo 200 University Ave. W. WaterlooONN2L 3G1 Canada Department of Computer Science Columbia University New York United States
The famous superdense coding protocol of Bennett and Wiesner demonstrates that it is possible to communicate two bits of classical information by sending only one qubit and using a shared EPR pair. Our first result is... 详细信息
来源: 评论
Fault-tolerant quantum error correction using error weight parities
arXiv
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arXiv 2020年
作者: Tansuwannont, Theerapat Leung, Debbie Institute for Quantum Computing Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada Institute for Quantum Computing Department of Combinatorics and Optimization University of Waterloo WaterlooONN2L 3G1 Canada Perimeter Institute for Theoretical Physics WaterlooONN2L 2Y5 Canada
In quantum error correction using imperfect primitives, errors of high weight arising from a few faults are major concerns since they might not be correctable by the quantum error correcting code. Fortunately, some er... 详细信息
来源: 评论
Robust Interior Point Method for quantum Key Distribution Rate Computation
arXiv
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arXiv 2021年
作者: Hu, Hao Im, Jiyoung Lin, Jie Lütkenhaus, Norbert Wolkowicz, Henry Department of Combinatorics and Optimization Faculty of Mathematics University of Waterloo WaterlooONN2L 3G1 Canada Department of Mathematical Sciences Clemson University ClemsonSC29634 United States Institute for Quantum Computing Department of Physics and Astronomy University of Waterloo WaterlooONN2L 3G1 Canada Department of Electrical & Computer Engineering University of Toronto TorontoONM5S 3G4 Canada
Security proof methods for quantum key distribution, QKD, that are based on the numerical key rate calculation problem, are powerful in principle. However, the practicality of the methods are limited by computational ... 详细信息
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Additive entanglemement measures cannot be more than asymptotically continuous
arXiv
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arXiv 2019年
作者: Coladangelo, Andrea Leung, Debbie Computing and Mathematical Sciences Caltech PasadenaCA United States Institute for Quantum Computing Department of Combinatorics and Optimization University of Waterloo Perimeter Institute WaterlooON Canada
In this short note, we show that any non-constant quantity defined on density matrices that is additive on tensor products and invariant under permutations cannot be "more than asymptotically continuous". Th... 详细信息
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One-shot quantum state redistribution and quantum Markov chains
arXiv
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arXiv 2021年
作者: Anshu, Anurag Hadiashar, Shima Bab Jain, Rahul Nayak, Ashwin Touchette, Dave School of Engineering and Applied Sciences Harvard University CambridgeMA United States Department of Combinatorics and Optimization Institute for Quantum Computing University of Waterloo 200 University Ave. W. WaterlooONN2L 3G1 Canada Department of Computer Science Center for Quantum Technologies National University of Singapore 21 Lower Kent Ridge Rd Singapore119077 Singapore Department of Computer Science Institut Quantique Université de Sherbrooke 2500 Boulevard de l’Université SherbrookeQCJ1K 2R1 Canada
We revisit the task of quantum state redistribution in the one-shot setting, and design a protocol for this task with communication cost in terms of a measure of distance from quantum Markov chains. More precisely, th... 详细信息
来源: 评论