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Quantum dot LEDs that can produce entangled photons

Conventional digital computing uses 'on-off' switches, but quantum computing looks to harness quantum state of matters—such as entangled photons of light or multiple states of atoms—to encode information. In theory, this can lead to much faster and more powerful computer processing, but the technology to underpin quantum computing is currently difficult to develop at scale. Researchers at Tyndall have taken a step forward by making quantum dot light-emitting diodes (LEDs) that can produce entangled photons (whose actions are linked), theoretically enabling their use to encode information in quantum computing.

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