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Quantum weirdness promises better imaging

   September 15/22, 2008
Link two photons via the quantum weirdness Einstein called spooky action at a distance, keep one photon and bounce the other off an object, and you have a way to dramatically reduce the amount of x-rays needed for medical imaging and infrared light needed for night-vision systems.

Quantum illumination systems theoretically detect entangled photons reflected off objects as much as a million times more efficiently than today's imaging systems detect ordinary reflected light.

Because the light is easier to detect, scanning beams can be much weaker. This means medical x-rays could be safer for patients and night-vision systems could be easier to conceal.

Research paper:
Enhanced Sensitivity of Photodetection via Quantum Illumination
Science, September 12, 2008

Researcher's homepage:
Seth Lloyd


Back to TRN September 15/22, 2008

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