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  "path": "/releases/2026/03/260321012702.htm",
  "publishedAt": "2026-03-21T07:34:39.000Z",
  "site": "https://www.sciencedaily.com",
  "textContent": "Scientists at Harvard have built a miniature device that can twist and tune light in real time. By rotating two stacked photonic crystals and adjusting their spacing with a tiny mechanical system, they can control how light’s “handedness” behaves. This allows the chip to distinguish between left- and right-circular polarized light with remarkable precision. The advance could lead to smarter sensors, faster communications, and new quantum technologies.",
  "title": "Harvard engineers build chip that can twist and control light in real time"
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