UNSW Group Reviews Breakthrough in Quantum Computing


A workforce of scientists from the College of New South Wales (UNSW) in Australia has measured for the primary time accuracy of two-qubit operations in silicon – a feat that may allow firms construct a full-scale quantum processor.

What makes qubits superior to traditional bits is that along with simply occupying a zero or 1 place, they’ll occupy each on the identical time – what’s identified in quantum mechanics because the superposition.

Computer systems in the present day course of info in binary bits that take both a zero or 1 worth whereas quantum computer systems depend upon the associated however superior idea of the qubit.

The analysis, printed within the prestigious journal Nature, guarantees quantum computer systems that may allow a vastly extra highly effective and sooner approach of creating calculations than the computing energy we have had until date.

“All quantum computations can be made up of one-qubit operations and two-qubit operations – they’re the central building blocks of quantum computing,” nanoelectronics researcher Andrew Dzurak from UNSW mentioned in a press release.

In 2015, Dzurak and fellow researchers constructed the world’s first quantum logic gate in silicon, in order that two qubits may talk with each other.

The experiments have been carried out by Wister Huang, a final-year PhD pupil in Electrical Engineering, and Dr Henry Yang, a senior analysis fellow at UNSW.

“Fidelity is a critical parameter which determines how viable a qubit technology is – you can only tap into the tremendous power of quantum computing if the qubit operations are near perfect, with only tiny errors allowed,” knowledgeable Dr Yang.

Various teams all over the world have since demonstrated two-qubit gates in silicon however the true accuracy of such a two-qubit gate was unknown.

On this examine, the workforce carried out and carried out Clifford-based constancy benchmarking — a way that may assess qubit accuracy throughout all expertise platforms — demonstrating a mean two-qubit gate constancy of 98 per cent.