We propose an implementation of a quantum router for microwave photons in a superconducting qubit architecture consisting of a transmon qubit, SQUIDs and a nonlinear capacitor. We model and analyze the dynamics of operation of the quantum switch using quantum Langevin equations in a scattering approach and compute the photon reflection and transmission probabilities. For parameters corresponding to up-to-date experimental devices we predict successful operation of the router with probabilities above 94%.
@article{arxiv.1509.05768,
title = {Proposal for a transmon-based quantum router},
author = {Arnau Sala and M. Blaauboer},
journal= {arXiv preprint arXiv:1509.05768},
year = {2016}
}
Comments
Paper (6 pages, 3 figures) and Supplemental Material (8 pages, 1 figure). Few minor changes with respect to the previous version