We study quantum state transfer between two qubits coupled to a common quantum bus that is constituted by an ultrastrong coupled light-matter system. By tuning both qubit frequencies on resonance with a forbidden transition in the mediating system, we demonstrate a high-fidelity swap operation even though the quantum bus is thermally populated. This proposal may have applications on hot quantum information processing within the context of ultrastrong coupling regime of light-matter interaction.
@article{arxiv.1612.06806,
title = {Incoherent-mediator for quantum state transfer in the ultrastrong coupling regime},
author = {F. A. Cárdenas-López and F. Albarrán-Arriagada and G. Alvarado Barrios and J. C. Retamal and G. Romero},
journal= {arXiv preprint arXiv:1612.06806},
year = {2017}
}
Comments
Minor corrections and reference updated. Accepted for publication by Scientific Reports