Fidelity of time-bin entangled multi-photon states from a quantum emitter

Abstract

We devise a mathematical framework for assessing the fidelity of multi-photon entangled states generated by a single solid-state quantum emitter, such as a quantum dot or a nitrogen-vacancy center. Within this formalism, we theoretically study the role of imperfections present in real systems on the generation of time-bin encoded Greenberger-Horne-Zeilinger and one-dimensional cluster states. We consider both fundamental limitations, such as the effect of phonon-induced dephasing, interaction with the nuclear spin bath, and second-order emissions, as well as technological imperfections, such as branching effects, non-perfect filtering, and photon losses. In a companion paper, we consider a particular physical implementation based on a quantum dot emitter embedded in a photonic crystal waveguide and apply our theoretical formalism to assess the fidelities achievable with current technologies.

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Cited by in corpus (6)

• Entangling a Hole Spin with a Time-Bin Photon: A Waveguide Approach for Quantum Dot Sources of Multi-Photon Entanglement
• High-fidelity multi-photon-entangled cluster state with solid-state quantum emitters in photonic nanostructures
• Entangling remote qubits using the single-photon protocol: an in-depth theoretical and experimental study
• Near-deterministic hybrid generation of arbitrary photonic graph states using a single quantum emitter and linear optics
• Deterministic generation of entangled photonic cluster states from quantum dot molecules
• Probing the dynamics and coherence of a semiconductor hole spin via acoustic phonon-assisted excitation