Extending the versatility and coherence of spin-photon graph state generation with semiconductor quantum dots
Measurement-based quantum computing is a promising approach for scalable quantum computing and networking. This relies upon the deterministic generation of graph states composed of many entangled photons. Semiconductor quantum dots (QDs) are sources of indistinguishable single photons and hosts of solid-state spins, marking them desirable platforms for controlled entanglement generation. Such a platform consisting of a single charged QD coupled to a photonic cavity has been proven for the generation of multipartite spin-photon graph states. This talk will present advancements in the versatility and coherence of such entanglement generation. First, the complete toolkit for single photon generation, spin control, and entanglement will be introduced. Then, control of the hole g-factor and dynamical decoupling techniques for extending the spin coherence time will be discussed. Finally, recent results will be presented on the generation of four-partite graph states with on-demand reconfigurability of the type of state produced.
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