Characterizing $d-$dimensional quantum channels by means of quantum process tomography
Abstract
In this work we propose a simple optical architecture, based on phase-only programmable spatial light modulators, in order to characterize general processes on photonic spatial quantum systems in a Hilbert space. We demonstrate the full reconstruction of typical noises affecting quantum computing, as amplitude shifts, phase shifts, and depolarizing channel in dimension . We have also reconstructed simulated atmospheric turbulences affecting a free-space transmission of qudits in dimension . In each case, quantum process tomography (QPT) was performed in order to obtain the matrix that fully describe the corresponding quantum channel, . Fidelities between the states experimentally obtained after go through the channel and the expected ones are above .
Cite
@article{arxiv.1806.06128,
title = {Characterizing $d-$dimensional quantum channels by means of quantum process tomography},
author = {Juan José Miguel Varga and Lorena Rebón and Quimey Pears Stefano and Claudio Iemmi},
journal= {arXiv preprint arXiv:1806.06128},
year = {2023}
}