Entanglement properties of a quantum-dot biexciton cascade in a chiral nanophotonic waveguide

• URL: http://arxiv.org/abs/2301.04444v2
• Date: Thu, 25 May 2023 12:23:31 GMT
• Title: Entanglement properties of a quantum-dot biexciton cascade in a chiral nanophotonic waveguide
• Authors: Eva M. Gonz\'alez-Ruiz, Freja T. {\O}stfeldt, Ravitej Uppu, Peter Lodahl, and Anders S. S{\o}rensen
• Abstract summary: We model the degree of entanglement through the concurrence of the two-photon entangled state in the presence of realistic experimental imperfections. The analysis shows that the approach offers a promising platform for deterministically generating entanglement in integrated nanophotonic systems.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We analyse the entanglement properties of deterministic path-entangled photonic states generated by coupling the emission of a quantum-dot biexciton cascade to a chiral nanophotonic waveguide, as implemented by {\O}stfeldt et al. [PRX Quantum 3, 020363 (2022)]. We model the degree of entanglement through the concurrence of the two-photon entangled state in the presence of realistic experimental imperfections. The model accounts for imperfect chiral emitter-photon interactions in the waveguide and the asymmetric coupling of the exciton levels introduced by fine-structure splitting along with time-jitter in the detection of photons. The analysis shows that the approach offers a promising platform for deterministically generating entanglement in integrated nanophotonic systems in the presence of realistic experimental imperfections.

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