Results 11 to 20 of about 11,924,253 (266)

Boosting projective methods for quantum process and detector tomography [PDF]

Physical Review Research
We introduce two methods for quantum process and detector tomography. In the quantum process tomography method, we develop an analytical procedure for projecting the linear inversion estimation of a quantum channel onto the set of completely positive ...
Júlia Barberà-Rodríguez, Leonardo Zambrano, Antonio Acín, Donato Farina   +3 more
doaj   +9 more sources

Confidence polytopes for quantum process tomography

New Journal of Physics, 2021
In the present work, we propose a generalization of the confidence polytopes approach for quantum state tomography (QST) to the case of quantum process tomography (QPT).
E O Kiktenko, D O Norkin, A K Fedorov
doaj   +4 more sources

Ancilla-Assisted Quantum Process Tomography [PDF]

Physical Review Letters, 2003
To appear in Physical Review ...
Altepeter, J.B., Branning, D, Jeffrey, E, Wei, T.C., Kwiat, P.G., Thew, R.T., O'Brien, JL, Nielsen, M.A., White, A.G.   +8 more
core   +10 more sources

Variational quantum process tomography [PDF]

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, Liu, Yong, Wang, Yang, Zhu, Pingyu, Guo, Chu, Wu, Junjie   +5 more
core   +4 more sources

Quantum process tomography on holographic metasurfaces

npj Quantum Information, 2022
Holographic metasurfaces and their applications have garnered significant attention owing to their role in polarization control. In this study, we demonstrate that the quantum properties of holographic metasurfaces can be obtained by quantum state ...
Qing-Yuan Wu, Zhe Meng, Jia-Zhi Yang, An-Ning Zhang   +3 more
doaj   +2 more sources

Partial standard quantum process tomography [PDF]

Quantum Information Processing, 2012
4 pages, no ...
Xiaohua Wu, Ke Xu
exaly   +4 more sources

Efficient Quantum State Sample Tomography with Basis-Dependent Neural Networks [PDF]

PRX Quantum, 2021
We use a metalearning neural-network approach to analyze data from a measured quantum state. Once our neural network has been trained, it can be used to efficiently sample measurements of the state in measurement bases not contained in the training data.
Alistair W. R. Smith, Johnnie Gray, M. S. Kim   +2 more
doaj   +2 more sources

Classical shadows for quantum process tomography on near-term quantum computers

Physical Review Research
Quantum 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
doaj   +2 more sources

Higher-Order Process Matrix Tomography of a Passively-Stable Quantum Switch

PRX Quantum
The 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, Marco Túlio Quintino, Philip Walther, Lee A. Rozema   +3 more
doaj   +2 more sources

GaAs-Based Quantum Dot Emitters for Telecomms and Broadband Applications [PDF]

, 2011
This thesis details InAs/GaAs quantum dots (QD) as light emitting media for gallium arsenide (GaAs) based bilayer laser devices for optical communication and dot-in-well (DWELL) superluminescent devices for broadband applications.
Mohammed, Abdul Majid
core   +6 more sources