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Rice-sized laser

Rice-sized laser, powered one electron at a time, bodes well for quantum computing

Date:
January 15, 2015
Source:
Princeton University
Researchers have built a rice grain-sized microwave laser, or ‘maser,’ powered by single electrons that demonstrates the fundamental interactions between light and moving electrons. It is a major step toward building quantum-computing systems out of semiconductor materials.

The device demonstrates a major step forward for efforts to build quantum-computing systems out of semiconductor materials, according to co-author and collaborator Jacob Taylor, an adjunct assistant professor at the Joint Quantum Institute, University of Maryland-National Institute of Standards and Technology. “I consider this to be a really important result for our long-term goal, which is entanglement between quantum bits in semiconductor-based devices,” Taylor said.

The original aim of the project was not to build a maser, but to explore how to use double quantum dots — which are two quantum dots joined together — as quantum bits, or qubits, the basic units of information in quantum computers.

http://www.sciencedaily.com/releases/2015/01/150115142353.htm

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