Deterministic generation of entangled photonic cluster states from quantum dot molecules

Abstract

Successful generation of photonic cluster states is the key step in the realization of measurement-based quantum computation and quantum network protocols. Several proposals for the generation of such entangled states from different solid-state emitters have been put forward. Each of these protocols come with their own challenges in terms of both conception and implementation. In this work we propose deterministic generation of these photonic cluster states from a spin-photon interface based on a hole spin qubit hosted in a quantum dot molecule. Our protocol resolves many of the difficulties of existing proposals and paves the way for an experimentally feasible realization of highly entangled multi-qubit photonic states with a high production rate.

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• Quantum repeaters: From quantum networks to the quantum internet
• Quantum dots for photonic quantum information technology
• Photonic source of heralded GHZ states
• A Spin-Optical Quantum Computing Architecture
• Avoiding leakage and errors caused by unwanted transitions in Lambda systems
• Coherent driving of direct and indirect excitons in a quantum dot molecule
• Time-bin entanglement in the deterministic generation of linear photonic cluster states
• Interferometric detection of continuous-variable entanglement using two states
• The impact of hole $g$-factor anisotropy on spin-photon entanglement generation with InGaAs quantum dots
• One-Way Quantum Repeater with Rare-Earth-Ions Doped in Solids