Researchers make an important step towards the quantum internet using diamond nanostructures

 https://phys.org/news/2023-04-important-quantum-internet-diamond-nanostructures.html

"generating and detecting photon frequencies emitted from quantum light from nitrogen-vacancy defect centers in diamond and integrating qubits into them 1,000X thinner than hair and transfer photons into glass fibers... material surface damaged at atomic level, and free electrons create uncontrollable noise... fluctuations in frequency prevents entanglement... high density of nitrogen impurity atoms in crystal lattice shield quantum light source from electron noise at nanostructure's surface"

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Researchers invent new way to stretch diamond for better quantum bits
https://phys.org/news/2023-11-diamond-quantum-bits.html