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

• URL: http://arxiv.org/abs/2007.09298v4
• Date: Tue, 2 Mar 2021 22:58:56 GMT
• Title: Fidelity of time-bin entangled multi-photon states from a quantum emitter
• Authors: Konstantin Tiurev, Pol Llopart Mirambell, Mikkel Bloch Lauritzen, Martin Hayhurst Appel, Alexey Tiranov, Peter Lodahl, Anders S{\o}ndberg S{\o}rensen
• Abstract summary: We study the role of imperfections present in real systems on the generation of time-bin encoded Greenberger-Horne-Zeilinger and one-dimensional cluster states. In a companion paper, we consider a particular physical implementation based on a quantum dot emitter embedded in a photonic crystal waveguide.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• 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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