High-fidelity multi-photon-entangled cluster state with solid-state quantum emitters in photonic nanostructures

Understand

We propose a complete architecture for deterministic generation of entangled multiphoton states.

• Our approach utilizes periodic driving of a quantum-dot emitter and an efficient light-matter interface enabled by a photonic crystal waveguide.
• We assess the quality of the photonic states produced from a real system by including all intrinsic experimental imperfections.
• Importantly, the protocol is robust against the nuclear spin bath dynamics due to a naturally built-in refocussing method reminiscent to spin echo.