[Via David Farber's IP] New paper (though not yet peer reviewed) from TU Delft, the leading experimental group using solid state qubit memories connected via single photons: https://arxiv.org/abs/2102.04471 And this interested Nature enough that they have a news article on it, quoting yours truly: https://www.nature.com/articles/d41586-021-00420-5 This is important because it's the first time that coupling entanglement across more than one hop has been done using solid state memories.
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