Tuesday , January 19 2021

Quantum scientists have demonstrated the world's first 3D nuclear-scale Quantum Chip architecture – SciDelley



Excellence for Quantum Computation and Communication Technology (CQC2T) The first time UNSW researchers in the center have shown that they can make atomic precision quotes in a 3D device – another major step towards a universal quantum computer.

The team of researchers guided by the Director of 2018 Australian of the Year and Chairman of CTCCT 2T, Michael Simmons, has demonstrated that they can expand their nuclear cube fabrication technique at multiple layers of silicon crystals – achieves the critical component of the 3D chip architecture. They introduced the world in 2015. This new research was published today Nature Nano Technology.

This group is the first to show the likelihood of architecture that uses aligned nuclear-scale quotes to control the lines – which are essentially very narrow wires within the 3D design.

What's more, the team was able to organize different layers with nanometer precision in their 3D device – and showed that they could read a single shot in the Quit States single, that is, at the same size, with very high fidelity.

"This 3D device architecture is a significant development for silicon molecular quilt," says Professor Simmons. "To be able to continually improve the errors in quantum calculations – an important milestone in our field – you should be able to control many quarters in parallel.

"The only way to do this is to use 3D architecture, so in 2015 we developed and patented vertical croscross architecture. However, this multi-layered device faced many challenges related to fabrication. Now we have shown that we have 3 years ago It is possible to approach engineering in 3D in the way it was conceived. "

In this paper, the team has shown how to make a second control plane or level at the top of the first level of quizzes.

Dr. Jorge Kaiser, researcher and co-author of the CQC2T explains, "It is a very complicated process, but in very simple terms, we first made the plane, and then optimized the technology to develop a second level without affecting the first level framework."

"In the past, critics would say that it is not possible because the second level is very rough, and you will not be able to use our precision technology – However, in this paper, we have shown that we can do against expectations, do that. "

The team showed that they can then arrange these multiple layers with nanometer accuracy.

"If you type something on the first silicon level and then place a silicon layer at the top, you need to identify your location to organize the elements on both layers. We have shown a technique that can achieve alignment within 5 nanometers, which It's quite unusual, "says Dr. Kaiser.

Eventually, researchers were able to measure the Cubit output of the 3D device, which is called single shots – that is, not to rely on making a single, accurate measurement, instead of making millions of experiments an average. "This will help us scale it faster," explains Dr. Kaiser.

Towards commercialization

Professor Simmons says that this research is a big milestone.

"We are working tirelessly on architecture that will lead us to the ultimate commercialization of technology.

"This is an important development in quantum computing, but it is also very attractive for the SQC," says professor Simmons, who is also the founder and director of SQC.

Since May 2017, Australia's first Quantum computing company, Silicon Quantum is working on the creation and commercialization of quantum computer based on intellectual property developed on quantum computing PT (SQC), CQCC 2T and Intellectual Property owned by it.

"We are still a decade away from large-scale quantum computers, however, research in this space has been at the forefront of innovation. Such concrete results reaffirm our strong position at international level."


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