Security comes one photon at a time Image TRN 010301

Description: Quantum dots embedded in this disk emit light when hit with a laser. Researchers can filter out all but the last photon in order to reliably produce just one photon per laser pulse.

Source: Peter Allen, University of California at Santa Barbara

Story: Security comes one photon at a time
TRN January 3, 2001

TRN Categories: Semiconductors and Materials; Quantum Computing; Cryptography and Security

Form: Still

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