Zobrazeno 1 - 10
of 110
pro vyhledávání: '"Steven T Flammia"'
Publikováno v:
New Journal of Physics, Vol 19, Iss 11, p 113017 (2017)
We introduce a fast and accurate heuristic for adaptive tomography that addresses many of the limitations of prior methods. Previous approaches were either too computationally intensive or tailored to handle special cases such as single qubits or pur
Externí odkaz:
https://doaj.org/article/936f3eb843f24100ab1ee91347b7e76c
Autor:
Joel J Wallman, Steven T Flammia
Publikováno v:
New Journal of Physics, Vol 18, Iss 7, p 079501 (2016)
Externí odkaz:
https://doaj.org/article/cdfe6c2750cc4f0289c7f6634bf42264
Publikováno v:
New Journal of Physics, Vol 17, Iss 11, p 113020 (2015)
Noise mechanisms in quantum systems can be broadly characterized as either coherent (i.e., unitary) or incoherent. For a given fixed average error rate, coherent noise mechanisms will generally lead to a larger worst-case error than incoherent noise.
Externí odkaz:
https://doaj.org/article/9a880e31a3114b1c87a8bbe0c693266d
Publikováno v:
New Journal of Physics, Vol 16, Iss 8, p 083027 (2014)
Quantum simulation is a promising near term application for quantum information processors with the potential to solve computationally intractable problems using just a few dozen interacting qubits. A range of experimental platforms have recently dem
Externí odkaz:
https://doaj.org/article/00f4d6afc8704ebeafce4d56bbec1c8e
Autor:
Joel J Wallman, Steven T Flammia
Publikováno v:
New Journal of Physics, Vol 16, Iss 10, p 103032 (2014)
Randomized benchmarking is a promising tool for characterizing the noise in experimental implementations of quantum systems. In this paper, we prove that the estimates produced by randomized benchmarking (both standard and interleaved) for arbitrary
Externí odkaz:
https://doaj.org/article/5452d6fdcff5497b8ca545e7eb025180
Publikováno v:
New Journal of Physics, Vol 14, Iss 9, p 095022 (2012)
Intuitively, if a density operator has small rank, then it should be easier to estimate from experimental data, since in this case only a few eigenvectors need to be learned. We prove two complementary results that confirm this intuition. Firstly, we
Externí odkaz:
https://doaj.org/article/155ae5c0800140a4821ad9cf0ddcb435
Autor:
J. Pablo Bonilla Ataides, David K. Tuckett, Stephen D. Bartlett, Steven T. Flammia, Benjamin J. Brown
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-12 (2021)
The surface code is a keystone in quantum error correction, but it does not generally perform well against structured noise and suffers from large overheads. Here, the authors demonstrate that a variant of it has better performance and requires fewer
Externí odkaz:
https://doaj.org/article/dbeaddab908247d4871d694fbaf62447
Publikováno v:
PRX Quantum, Vol 3, Iss 3, p 030321 (2022)
We consider quantum error-correcting subsystem codes whose gauge generators realize a translation-invariant, free-fermion-solvable spin model. In this setting, errors are suppressed by a Hamiltonian whose terms are the gauge generators of the code an
Externí odkaz:
https://doaj.org/article/f5bf6790db8f4663bc5f4b5e4d3b53a2
Autor:
Andreas Elben, Steven T. Flammia, Hsin-Yuan Huang, Richard Kueng, John Preskill, Benoît Vermersch, Peter Zoller
Publikováno v:
Nature Reviews Physics. 5:9-24
Increasingly sophisticated programmable quantum simulators and quantum computers are opening unprecedented opportunities for exploring and exploiting the properties of highly entangled complex quantum systems. The complexity of large quantum systems
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7af20dddc30a4a365b6d38bd80d1d492
https://doi.org/10.1038/s42254-022-00535-2
https://doi.org/10.1038/s42254-022-00535-2
Autor:
Christopher Chamberland, Kyungjoo Noh, Patricio Arrangoiz-Arriola, Earl T. Campbell, Connor T. Hann, Joseph Iverson, Harald Putterman, Thomas C. Bohdanowicz, Steven T. Flammia, Andrew Keller, Gil Refael, John Preskill, Liang Jiang, Amir H. Safavi-Naeini, Oskar Painter, Fernando G.S.L. Brandão
Publikováno v:
PRX Quantum, Vol 3, Iss 1, p 010329 (2022)
We present a comprehensive architectural analysis for a proposed fault-tolerant quantum computer based on cat codes concatenated with outer quantum error-correcting codes. For the physical hardware, we propose a system of acoustic resonators coupled
Externí odkaz:
https://doaj.org/article/a932e83203284b7abd8cb0c81214cb3e