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Test results show that UNSW's quantum-silicon venture could pay

Test shows integrated quantumchip operations possible Image: Delivered Researchers from the University of New South Wales (UNSW) have announced the…


Test shows integrated quantumchip operations possible

Image: Delivered

Researchers from the University of New South Wales (UNSW) have announced the results of a test that they said has brought a quantum computer closer to reality.

According to UNSW, researchers have shown an integrated quill quantum (qubit) platform that combines both single-spin addressability, as the university explained is the ability to write single spin qubit information without disturbing its neighbors, and a qubit read-out “process that is expected to be crucial for quantum error correction.

“In addition, their new integrated design can be manufactured using well-established technology used in the existing data industry,” said UNSW.

Quantum computers will require millions of connected and integrated qubits, and the tests performed by scientists have proven that it is possible to correct the errors that occur in fragile quantum systems.

There are five leading hardware configurations for a quantum computer, and researchers around the world are trying to decide who will be the winner. UNSW goes all-in with silicon.

Also read: Australia’s ambitious plan for winning quantum race

The team, led by Scientia Professor Andrew Dzurak, published last year a design for a new chip architecture that allows quantum calculations to be performed using silicon-complementary metal oxide- semiconductor (CMOS) components that underlie all modern computer accessories.

The new study combines the two quantum technicians for the first time, as UNSW said confirms Löfte about its approach.

Dzurak’s team had previously also shown that an integrated silicon bitbit platform can operate with one-point addressability, which is the ability to rotate a single spin without disturbing its neighbors.

Read also: How the industry expects to secure information in a quantum world

According to UNSW, researchers have now shown that they can combine simple spin addressability with a particular type of NTA readout process called Pauli -spinnblockad. UNSW said that Pauli spin is an important requirement for quantum error correction codes that will be necessary to ensure accuracy in large centrifugation-based quantum computers.

“We have shown the ability to make Pauli spin-reading in our silicon qubit device, but for the first time we have also combined it with spin resonance to control the spin,” said Dzurak, who is also a program leader at the Center of Excellence for Quantum Compatibility and Communication Technology (CQC2T) and Director of the NSW Node from the Australian National Fabrication Facility.

“This is an important milestone for us on the road to performing quantum error correction with spin qubits, which will be crucial to a universal quantum computer . “

This new combination of qubit reading and control techniques is a key feature of its quantum design design, UNSW explained. Since qubits are fragile and require constant error correction, the combination is also an important requirement for creating large scale useful quantum computing, but this creates significant overhead in the number of physical qubits required for the system to work.

“Using CMOS Silicon Technology, we have the perfect platform to scale to the millions of qubits we need, and our latest results provide us with the tools to achieve fast error correction in the near future, says Dzurak.

“It is another confirmation that we are on track. And it also shows that the architecture we have developed at UNSW so far has not shown any paths to the development of a working quantum data clip.” [1


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