We study the equilibrium and non-equilibrium physics of two qubits interacting through an ultrastrong coupled qubit-cavity system. By tuning the qubits energy gap while keeping the ultrastrong coupling system to its ground state, we demonstrate a strong two-qubit interaction as well as an enhanced excitation transfer between the two qubits. Our proposal has twofold implications: a means to attain multipurpose parity-protected quantum information tasks in superconducting circuits, and a building block for ultrastrong coupled cavity-enhanced exciton transport in disordered media.
@article{arxiv.1601.06006,
title = {Parity-preserving light-matter system mediates effective two-body interactions},
author = {Thi Ha Kyaw and Sebastian Allende and Leong-Chuan Kwek and Guillermo Romero},
journal= {arXiv preprint arXiv:1601.06006},
year = {2017}
}
Comments
Accepted by Quantum Science and Technology, 19 pages, 10 figures