@misc{10481/102430,
year = {2024},
month = {12},
url = {https://hdl.handle.net/10481/102430},
abstract = {Given a unitary operator in a finite dimensional complex Hilbert space, its unitary reduction to a subspace
is defined. The application to quantum graphs is discussed. It is shown how the reduction allows to generate
the scattering matrices of new quantum graphs from assembling of simpler graphs. The reduction of quantum
channels is also defined. The implementation of the quantum gates corresponding to the reduced unitary operator
is investigated, although no explicit construction is presented. The situation is different for the reduction of
quantum channels for which explicit implementations are given.},
organization = {MCIN/AEI/10.13039/501100011033   PID2020-114767 GB-I00},
organization = {Junta de Andalucía  FQM-225},
organization = {Spanish Ministerio de Ciencia, Innovacion y Universidades  PID2023-147072N},
publisher = {IOPScience},
title = {Reduction of unitary operators, quantum graphs and quantum channels},
doi = {10.1088/1751-8121/ada2c8},
author = {Salcedo Moreno, Lorenzo Luis},
}