Key quantum computing components squeezed onto a single chip


Researchers are a little bit closer to a practical quantum computer after a University of Bristol team discovered how to produce and control photons — a key component of quantum computing — on the same chip as other essential parts. They published their work in Nature Photonics today.

Before now, researchers had developed parts that produce and detect photons — also known as the particles that make up light — but they were always located on their own chips. In order to make a computer cost and energy efficient, it’s important that all the components be packed onto one chip.

“We were surprised by how well the integrated sources performed together,” lead author Joshua Silverstone said in a release. “They produced high-quality identical photons in a reproducible way, confirming that we could one day manufacture a silicon chip with hundreds of similar sources on it, all working together. This could…

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