Results 21 to 30 of about 60,354 (258)
Classical shadows for quantum process tomography on near-term quantum computers
Physical Review ResearchQuantum process tomography is a powerful tool for understanding quantum channels and characterizing the properties of quantum devices. Inspired by recent advances using classical shadows in quantum state tomography [H.-Y. Huang, R. Kueng, and J. Preskill,
Ryan Levy, Di Luo, Bryan K. Clark
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Theory-independent monitoring of the decoherence of a superconducting qubit with generalized contextuality [PDF]
Nature CommunicationsCharacterizing the nonclassicality of quantum systems under minimal assumptions is an important challenge for quantum foundations and technology. Here we introduce a theory-independent method of process tomography and perform it on a superconducting ...
Albert Aloy +4 more
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Higher-Order Process Matrix Tomography of a Passively-Stable Quantum Switch
PRX QuantumThe field of indefinite causal order (ICO) has seen a recent surge in interest. Much of this research has focused on the quantum switch, wherein multiple parties act in a superposition of different orders in a manner transcending the quantum circuit ...
Michael Antesberger +3 more
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Error matrices in quantum process tomography
, 2013 We discuss characterization of experimental quantum gates by the error matrix, which is similar to the standard process matrix $\chi$ in the Pauli basis, except the desired unitary operation is factored out, by formally placing it either before or after ...
Korotkov, Alexander N.
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Objective compressive quantum process tomography [PDF]
Physical Review A, 2020 7 pages, 4 ...
Y. S. Teo +8 more
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Variational quantum process tomography
Physical Review A, 2021 Quantum process tomography is an experimental technique to fully characterize an unknown quantum process. Standard quantum process tomography suffers from exponentially scaling of the number of measurements with the increasing system size. In this work, we put forward a quantum machine learning algorithm which approximately encodes the unknown unitary ...
Xue, Shichuan +5 more
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Direct quantum process tomography via measuring sequential weak values of incompatible observables. [PDF]
Nat Commun, 2018 Kim Y +6 more
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Self-consistent quantum process tomography [PDF]
Physical Review A, 2013 Quantum process tomography is a necessary tool for verifying quantum gates and diagnosing faults in architectures and gate design. We show that the standard approach of process tomography is grossly inaccurate in the case where the states and measurement operators used to interrogate the system are generated by gates that have some systematic error, a ...
Merkel, Seth T. +7 more
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Single-scan quantum process tomography [PDF]
Physical Review A, 2014 The standard procedure for quantum process tomography (QPT) involves applying the quantum process on a system initialized in each of a complete set of orthonormal states. The corresponding outputs are then characterized by quantum state tomography (QST), which itself requires the measurement of non-commuting observables realized by independent ...
Shukla, Abhishek, Mahesh, T. S.
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Model-Predictive Quantum Control via Hamiltonian Learning
IEEE Transactions on Quantum Engineering, 2022 This article proposes an end-to-end framework for the learning-enabled control of closed quantum systems. The proposed learning technique is the first of its kind to utilize a hierarchical design, which layers probing control, quantum state tomography ...
MAISON CLOUATRE +2 more
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