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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 +4 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 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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Ancilla-assisted quantum process tomography [PDF]
Physical Review Letters, 2003 Complete and precise characterization of a quantum dynamical process can be achieved via the method of quantum process tomography. Using a source of correlated photons, we have implemented several methods investigating a wide range of processes, e.g ...
Altepeter, J. B. +8 more
core +9 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
doaj +3 more sources
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
doaj +6 more sources
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
doaj +2 more sources
Quantum Process Tomography of the Quantum Fourier Transform [PDF]
The Journal of Chemical Physics, 2004 The results of quantum process tomography on a three-qubit nuclear magnetic resonance quantum information processor are presented, and shown to be consistent with a detailed model of the system-plus-apparatus used for the experiments.
David G. Cory +8 more
core +3 more sources
Quantum teleportation with atoms: quantum process tomography [PDF]
New Journal of Physics, 2007 The performance of a quantum teleportation algorithm implemented on an ion trap quantum computer is investigated. First the algorithm is analyzed in terms of the teleportation fidelity of six input states evenly distributed over the Bloch sphere ...
Benhelm, J. +6 more
core +2 more sources
Selective and Efficient Quantum Process Tomography [PDF]
Physical Review A, 2009 In this paper we describe in detail and generalize a method for quantum process tomography that was presented in [A. Bendersky, F. Pastawski, J. P. Paz, Physical Review Letters 100, 190403 (2008)].
A. Ambainis +7 more
core +6 more sources