Harnessing silicon fabrication technology to build quantum optical circuits

phys.org | 10/10/2018 | Staff
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A new study by scientists from the University of Bristol brings us a significant step closer to unleashing the revolutionary potential of quantum computing by harnessing silicon fabrication technology to build complex on-chip quantum optical circuits.

Quantum computers offer an exciting new approach to solving problems that are currently intractable even on the most advanced classical supercomputers.

Quantum - Computer - Lab

Building a quantum computer in the lab however has proven to be highly challenging.

Researchers at the University's Quantum Engineering Technology Labs (QET Labs) are using single particles of light, photons, to construct optical circuits that process quantum-bits (qubits) of information.

Materials - Fabrication - Facilities - Electronics - Industry

Using the same materials and fabrication facilities originally developed by the electronics industry, QET Labs have demonstrated highly complex circuits on silicon chips that can precisely process small numbers of photonic qubits. Their findings have been published in the journal Optics Express.

Although circuits can be made almost arbitrarily large it has proven difficult to generate many perfect and identical photons at the same time for processing larger amounts of quantum information.

Research - Team - Dr - Gary - Sinclair

The research team, headed by Dr. Gary Sinclair and Dr. Imad Faruque, set out to investigate if several parallel sources on a single silicon chip could be made to generate perfect and identical single photons.

Dr. Imad Faruque said: "We demonstrated for the first time that nearly perfect single-photons can be generated from two parallel sources...
(Excerpt) Read more at: phys.org
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