May Kim

Abstract Spontaneously emitted photons are entangled with the electronic and nuclear degrees of freedom of the emitting atom, so interference and measurement of these photons can entangle separate matter-based quantum systems as a resource for quantum information processing. Since confinement in a single-mode facilitates the photon interference needed for generating entanglement, the dipole emission patterns relevant in spontaneous emission present a mode-matching challenge.

Correction to: Nature Photonics https://doi.org/10.1038/s41566-024-01588-8, published online 6 January 2025. In the version of the article initially published, in the first paragraph of the “Testing optical clock lock with drift” section of the Methods, “…whose frequency drift is low (~60 MHz s–1)” should have read “…whose frequency drift is low (~60 mHz s–1)” and has now been corrected in the HTML and PDF versions of the article. About this article Loh, W., Reens, D., Kharas, D. et al.