News of the WeekPhysics

Yoked Photons Break the Light Barrier

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Science  06 Oct 2000:
Vol. 290, Issue 5489, pp. 29-31
DOI: 10.1126/science.290.5489.29

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By exploiting entanglement, the quintessential "spooky" phenomenon in quantum mechanics, physicists have come up with a method for drawing tiny features on a microchip that would be impossible according to the classical theory of light. If it proves practical, the technique could enable chip designers to circumvent the so-called Rayleigh limit, a physical barrier that plagues chip manufactures much as the sound barrier used to bedevil aerospace engineers.