Polarization-entangled photons from a whispering gallery resonator

Huang SH, Dirmeier T, Shafiee G, Laiho K, Strekalov DV, Leuchs G, Marquardt C (2024)

Publication Type: Journal article

Publication year: 2024

Journal

npj Quantum Information Nature Research

Book Volume: 10

Article Number: 85

Issue: 1

DOI: 10.1038/s41534-024-00876-z

Abstract

Crystalline whispering gallery mode resonators (WGMRs) have been shown to facilitate versatile sources of quantum states that can efficiently interact with atomic systems. These features make WGMRs an efficient platform for quantum information processing. Here, we experimentally show that it is possible to generate polarization entanglement from WGMRs by using an interferometric scheme. Our scheme gives us the flexibility to control the phase of the generated entangled state by changing the relative phase of the interferometer. The S value of Clauser–Horne–Shimony–Holt’s inequality in the system is 2.45 ± 0.07, which violates the inequality by more than six standard deviations.

Authors with CRIS profile

Sheng-Hsuan Huang Chair of Optical Quantum Technologies Golnoush Shafiee Lehrstuhl für Experimentalphysik (Optik) Gerhard Leuchs Lehrstuhl für Experimentalphysik (Optik) Christoph Marquardt Chair of Optical Quantum Technologies

Involved external institutions

Deutsches Zentrum für Luft- und Raumfahrt e.V. (DLR) / German Aerospace Center DE Germany (DE) Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light DE Germany (DE)

How to cite

APA:

Huang, S.-H., Dirmeier, T., Shafiee, G., Laiho, K., Strekalov, D.V., Leuchs, G., & Marquardt, C. (2024). Polarization-entangled photons from a whispering gallery resonator. npj Quantum Information, 10. https://doi.org/10.1038/s41534-024-00876-z

MLA:

Huang, Sheng-Hsuan, et al. "Polarization-entangled photons from a whispering gallery resonator." npj Quantum Information 10 (2024).

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