The two photons from the two atoms are jointly measured with a beam splitter, which mixes the two input photons, and the atom-photon entanglement is transferred to interatom entanglement, which is the entanglement swap.

Subject of poetry, art and legend, Hukou Waterfall is the second largest falls in China, located on the Yellow River, between Ji County, Shanxi Province and Yichuan County, Shaanixi Provine.

What will ye, said King Arthur, and what is your errand?

She was a fat, round little woman, richly apparelled in velvet and lace, […]; and the way she laughed, cackling like a hen, the way she talked to the waiters and the maid, […]—all these unexpected phenomena impelled one to hysterical mirth, and made one class her with such immortally ludicrous types as Ally Sloper, the Widow Twankey, or Miss Moucher.