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Entangling a Hole Spin with a Time-Bin Photon: A Waveguide Approach for Quantum Dot Sources of Multiphoton Entanglement
- Source :
- Appel, M H, Tiranov, A, Pabst, S, Chan, M L, Starup, C, Wang, Y, Midolo, L, Tiurev, K, Scholz, S, Wieck, A D, Ludwig, A, Sørensen, A S & Lodahl, P 2022, ' Entangling a Hole Spin with a Time-Bin Photon : A Waveguide Approach for Quantum Dot Sources of Multiphoton Entanglement ', Physical Review Letters, vol. 128, no. 23, 233602 . https://doi.org/10.1103/PhysRevLett.128.233602
- Publication Year :
- 2022
- Publisher :
- American Physical Society (APS), 2022.
-
Abstract
- Deterministic sources of multi-photon entanglement are highly attractive for quantum information processing but are challenging to realize experimentally. In this paper, we demonstrate a route towards a scaleable source of time-bin encoded Greenberger-Horne-Zeilinger and linear cluster states from a solid-state quantum dot embedded in a nanophotonic crystal waveguide. By utilizing a self-stabilizing double-pass interferometer, we measure a spin-photon Bell state with $(67.8\pm0.4)\%$ fidelity and devise steps for significant further improvements. By employing strict resonant excitation, we demonstrate a photon indistinguishability of $(95.7\pm0.8)\%$, which is conducive to fusion of multiple cluster states for scaling up the technology and producing more general graph states.<br />Comment: Manuscript: 7 pages, 3 figures. Supplementary information: 23 pages, 12 figures
Details
- ISSN :
- 10797114 and 00319007
- Volume :
- 128
- Database :
- OpenAIRE
- Journal :
- Physical Review Letters
- Accession number :
- edsair.doi.dedup.....8f32a621c47d3f39db4f131d15d781a0