Saswata Roy

A quantum chip is like a layered cake: superconducting metal, a thin insulator layer, and more metal. Previously, layers were applied through a polymer mask, like a stencil for paint. The polymer left invisible droplets on the surface that degraded superconductivity and compromised cleanliness. Now, the mask is gone.

A judge walks into the courtroom but doesn't look at the evidence: he immediately delivers the verdict. That's how the new quantum sensor works: it doesn't measure the signal but directly decides which class it belongs to. In conventional quantum sensing, it's all like a detective story: first you gather clues (measure the signal), then you analyze them.