No Bigger Than A Grain Of Rice Created At Princeton

January 18, 2015 12:38 AM

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No Bigger Than A Grain Of Rice Created At Princeton

Researchers say they have built a microwave laser no bigger than a grain of rice that is powered by single electrons tunneling through artificial atoms known as quantum dots. The device, called a maser, could help make advances in communications, sensing, medicine and other aspects of modern life.

The device uses about one-billionth of the power needed to run a hair dryer and represents a major step in efforts to build quantum-computing systems, the researchers said. "I consider this to be a really important result for our long-term goal, which is entanglement between quantum bits in semicond...

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