Vibe check: Harvard’s ultra-thin chip could revolutionize quantum computing (metasurfaces)

Could anyone provide a vibe check on this recent paper by Harvard where they propose using metasurfaces for quantum information infrastructure?

I saw this article about it, but there’s so much hype about quantum advancements atm that I find it hard to figure out which are actually significant and which have severe unmentioned limitations.

Paper: https://www.science.org/doi/10.1126/science.adw8404

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