Quantum world-first: researchers can now tell how accurate two-qubit calculations in silicon really are

14 May 2019

After being the first team to create a two-qubit gate in silicon in 2015, UNSW Sydney engineers are breaking new ground again: they have measured the accuracy of silicon two-qubit operations for the first time – and their results confirm the promise of silicon for quantum computing.

For the first time ever, researchers have measured the fidelity – that is, the accuracy – of two-qubit logic operations in silicon, with highly promising results that will enable scaling up to a full-scale quantum processor. The research, carried out by Professor Andrew Dzurak’s team in UNSW Engineering, was published in the world-renowned journal Nature. Corresponding author is Dr Bas Hensen – NWO Rubicon-fellow and winner of the 2017 NWO Physics Thesis Award.

Bas Hensen joined the University of New South Wales from the Netherlands, where he had already made a name for himself by experimentally demonstrating a fundamental principle of quantum mechanics using entangled qubits in diamond.

Bas Hensen received a Rubicon grant in 2017 for his research on Long Range Entanglement in a Silicon Quantum-processor. In 2018 he received the NWO Physics Thesis Award with his doctoral thesis, Quantum Nonlocality with Spins in Diamond.

Read the publication in Nature.

Read the full press release here (English only).

Source: NWO