We propose a new scheme for quantum computation using flying qubits--propagating photons in a one-dimensional waveguide--interacting with matter qubits. Photon-photon interactions are mediated by the coupling to a three- or four-level system, based on which photon-photon \pi-phase gates (Controlled-NOT) can be implemented for universal quantum computation. We show that high gate fidelity is possible given recent dramatic experimental progress in superconducting circuits and photonic-crystal waveguides. The proposed system can be an important building block for future on-chip quantum networks.
@article{arxiv.1211.1711,
title = {Waveguide-QED-Based Photonic Quantum Computation},
author = {Huaixiu Zheng and Daniel J. Gauthier and Harold U. Baranger},
journal= {arXiv preprint arXiv:1211.1711},
year = {2013}
}
Comments
Published version, extensively revised main text and supplemental material compared to v1