Photonic Chips for Fault-Tolerance Quantum Computing

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The collaboration between Xanadu and Imec involves fabricating low-loss silicon nitride circuits that can correct qubit errors and increase capacity.

www.eetimes.eu, Aug. 31, 2021 – 

Xanadu and Imec have partnered to develop photonic chips for fault-tolerant quantum computing. Their common goal is to create a machine based on quantum theory capable of executing any algorithm, detecting and correcting any error that may affect the calculation, thus accommodating a large number of qubits.

Xanadu and Imec said they aim to harness photonics to build million-qubit quantum computers that are immediately available to customers. Their collaboration involves fabricating low-loss silicon nitride circuits that can correct qubit errors and increase capacity.

In an interview with EE Times Europe, Amin Abbasi, business development manager at Imec, and Zachary Vernon, head of hardware at Xanadu, have highlighted the prospects of quantum computers for future applications. "There are some applications that may not require full fault-tolerance to deliver some value. Examples exist in machine learning and optimization. Xanadu has already made some chips available to users via its cloud platform that can have an impact in these areas. However, the biggest value likely lies in chemistry applications which cannot be addressed without a device having millions of physical qubits and implementing error correction," said Vernon.

He added, "Demonstrating robust error correction and achieving fault-tolerance is the biggest hurdle that quantum computing must overcome before it can address the most valuable applications. Good materials fabrication and high-quality lithography and chip packaging are critical."

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