title: Waveguide-QED-based photonic quantum computation.
abstract: 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 four-level system, based on which photon-photon π-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.
authors.affiliation: Department of Physics, Duke University, Post Office Box 90305, Durham, North Carolina 27708, USA.
authors.forename: Huaixiu
authors.initials: H
authors.lastname: Zheng
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Gauthier
authors.forename: Harold U
authors.initials: HU
authors.lastname: Baranger