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Computers today process information in binary bits that take either a 0 or 1 value while quantum computers depend on the related but superior concept of the qubit.What makes qubits superior to conventional bits is that in addition to just occupying a 0 or 1 position, they can occupy both at the same time what's known in quantum mechanics as the superposition."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 said in a statement.The research, published in the prestigious journal Nature, promises quantum computers that would enable a vastly more powerful and faster way of making calculations than the computing power we've had till date.In 2015, Dzurak and fellow researchers built the world's first quantum logic gate in silicon, so that two qubits could communicate with one another.The experiments were performed by Wister Huang, a final-year PhD student in Electrical Engineering, and Dr Henry Yang, a senior research fellow at UNSW.A number of groups around the world have since demonstrated two-qubit gates in silicon but the true accuracy of such a two-qubit gate was unknown."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," informed Dr Yang.In this study, the team implemented and performed Clifford-based fidelity benchmarking a technique that can assess qubit accuracy across all technology platforms demonstrating an average two-qubit gate fidelity of 98 per cent.Quantum computers will have a wide range of important applications in the future thanks to their ability to perform far more complex calculations at much greater speeds, including solving problems that are simply beyond the ability of today's computers."But for most of those important applications, millions of qubits will be needed, and you're going to have to correct quantum errors, even when they're small," said Professor Dzurak.The researchers said that silicon as a technology platform is ideal for scaling up to the large numbers of qubits needed for universal quantum computing.In another paper published in the Nature Electronics journal the same team achieved the record for the world's most accurate 1-qubit gate in a silicon quantum dot, with a remarkable fidelity of 99.96 per cent.

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Unsw, Latest News

National :Collaboration key to realise India's 'Smart City' dream

In order to fast create better smart cities in India, joint research between universities assumes significance as it makes it more relevant to people owing to its immediate applicability, a senior government official said on Monday. ...

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International :Indian-origin researcher turns banana plant into packaging material

An Indian-origin researcher-led team at the University of New South Wales (UNSW) on Friday announced it has discovered a novel way to turn banana plantation waste into packaging material that is not only biodegradable but also recyclable. ...

National :UNSW welcomes Indian students to join cutting-edge research

As India aims to foster innovation and skills for its aspirational youth, the University of New South Wales (UNSW) in Sydney is keen to become the top destination for Indian students and research partners, it said in a statement on Monday. ...

Health :UNSW Sydney helping traumatised refugee men overcome stigma

Scientists at University of New South Wales (UNSW), Sydney have developed an online intervention to help traumatised refugee men overcome the stigma associated with post-traumatic stress disorder (PTSD). ...

International :UNSW team reports breakthrough in quantum computing

A team of scientists from the University of New South Wales (UNSW) in Australia has measured for the first time accuracy of two-qubit operations in silicon a feat that would enable companies build a full-scale quantum processor. ...