Results 1 to 10 of about 11,924,253 (266)
Variational Quantum Process Tomography of Non-Unitaries [PDF]
Entropy, 2023 Quantum process tomography is a fundamental and critical benchmarking and certification tool that is capable of fully characterizing an unknown quantum process.
Shichuan Xue +4 more
doaj +7 more sources
Multipass quantum process tomography [PDF]
Scientific ReportsWe introduce a method to enhance the precision and accuracy of Quantum Process Tomography (QPT) by mitigating the errors caused by state preparation and measurement (SPAM), readout and shot noise.
Stancho G. Stanchev, Nikolay V. Vitanov
doaj +4 more sources
Quantum process tomography of a high-dimensional quantum communication channel [PDF]
Quantum, 2019 The characterization of quantum processes, e.g. communication channels, is an essential ingredient for establishing quantum information systems. For quantum key distribution protocols, the amount of overall noise in the channel determines the rate at ...
Frédéric Bouchard +7 more
doaj +9 more sources
Quantum process tomography by 2D fluorescence spectroscopy [PDF]
Journal of Chemical Physics, 2015 Reconstruction of the dynamics (quantum process tomography) of the single-exciton manifold in energy transfer systems is proposed here on the basis of two-dimensional fluorescence spectroscopy (2D-FS) with phase-modulation. The quantum-process-tomography protocol introduced here benefits from, e.g., the sensitivity enhancement ascribed to 2D-FS ...
Leonardo A Pachón +2 more
exaly +8 more sources
Quantum process tomography with unsupervised learning and tensor networks [PDF]
Nature Communications, 2023 The impressive pace of advance of quantum technology calls for robust and scalable techniques for the characterization and validation of quantum hardware. Quantum process tomography, the reconstruction of an unknown quantum channel from measurement data,
Giacomo Torlai +5 more
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Implementing efficient selective quantum process tomography of superconducting quantum gates on IBM quantum experience [PDF]
Scientific Reports, 2022 The experimental implementation of selective quantum process tomography (SQPT) involves computing individual elements of the process matrix with the help of a special set of states called quantum 2-design states.
Akshay Gaikwad +3 more
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Projected Least-Squares Quantum Process Tomography [PDF]
Quantum, 2022 We propose and investigate a new method of quantum process tomography (QPT) which we call projected least squares (PLS). In short, PLS consists of first computing the least-squares estimator of the Choi matrix of an unknown channel, and subsequently ...
Trystan Surawy-Stepney +3 more
doaj +5 more sources
Bootstrapping quantum process tomography via a perturbative ansatz [PDF]
Nature Communications, 2020 Quantum process tomography represents one of the workhorses of quantum information processing, but suffers from exponential resource scaling. Here, the authors propose to efficiently infer general processes by approximating them through a sequence of two-
L. C. G. Govia +4 more
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Non-Markovian Quantum Process Tomography
PRX Quantum, 2022 Characterization protocols have so far played a central role in the development of noisy intermediate-scale quantum (NISQ) computers capable of impressive quantum feats.
G.A.L. White +4 more
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Fourier Quantum Process Tomography
npj Quantum InformationThe characterization of a quantum device is a crucial step in the development of quantum experiments. This is accomplished via Quantum Process Tomography, which combines the outcomes of different projective measurements to deliver a possible ...
Francesco Di Colandrea +3 more
doaj +4 more sources