Experimental high-intensity three-photon entangled source
Huai-Xin Lu, Jun Zhang, Xiao-Qin Wang, Ying-De Li, and Chun-Yan Wang
TL;DR
This paper reports the experimental realization of a high-intensity three-photon GHZ entanglement source with high fidelity, demonstrating its potential for quantum information applications through Bell inequality tests and theoretical optimization.
Contribution
It presents the first experimental implementation of a high-intensity three-photon GHZ source following a specific proposal, with detailed characterization and optimization analysis.
Findings
Threefold coincidence rate exceeds 200 Hz
Fidelity of the entangled state is 0.811
Theoretical analysis links photon source parameters to entanglement quality
Abstract
We experimentally realize a high-intensity three-photon Greenberger-Horne-Zeilinger (GHZ) entanglement source directly following the proposal by Rarity and Tapster [J. G. Rarity and P. R. Tapster, Phys. Rev. A 59, R35 (1999)]. The threefold coincidence rate can be more than 200 Hz with a fidelity of 0.811, and the intensity can be further improved with moderate fidelity degradation. The GHZ entanglement is characterized by testing the Bell-Mermin inequality and using an entanglement witness operator. To optimize the polarization-entangled source, we theoretically analyze the relationship between the mean photon number of the single-photon source and the probability of parametric down-conversion.
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.