Tiny camera lens may help link quantum computers to network

September 13, 2018, Australian National University
Kai Wang holding a sample that has multiple metasurface camera lenses. Credit: Lannon Harley, ANU

An international team of researchers led by The Australian National University (ANU) has invented a tiny camera lens, which may lead to a device that links quantum computers to an optical fibre network.

Quantum computers promise a new era in ultra-secure networks, artificial intelligence and therapeutic drugs, and will be able to solve certain problems much faster than today's computers.

The unconventional lens, which is 100 times thinner than a human hair, could enable a fast and reliable transfer of information from the new-age computers to a network, once these technologies are fully realised.

The device is made of a silicon film with millions of nano-structures forming a metasurface, which can control light with functionalities outperforming traditional systems.

Associate Professor Andrey Sukhorukov said the metasurface camera lens was highly transparent, thereby enabling efficient transmission and detection of information encoded in .

"It is the first of its kind to image several quantum particles of light at once, enabling the observation of their spooky behaviour with ultra-sensitive cameras," said Associate Professor Sukhorukov, who led the research with a team of scientists at the Nonlinear Physics Centre of the ANU Research School of Physics and Engineering.

Kai Wang in the lab. Credit: Lannon Harley, ANU

Kai Wang, a Ph.D. scholar at the Nonlinear Physics Centre who worked on all aspects of the project, said one challenge was making portable quantum technologies.

"Our device offers a compact, integrated and stable solution for manipulating quantum light. It is fabricated with a similar kind of manufacturing technique used by Intel and NVIDIA for chips." he said.

The research is published in Science.

Explore further: Multi-purpose silicon chip created for quantum information processing

More information: "Quantum metasurface for multiphoton interference and state reconstruction" science.sciencemag.org/cgi/doi … 1126/science.aat8196

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zeitgeist
1 / 5 (1) Sep 17, 2018
whats the outcomes of trials with bio-material ( or bio-chips) for use in quantum computing? Fact is our brain cells dont work in serial or parallel order.They work differently and in mysterious ways to produce some results,some coming out to be wrong,some consistent with similar results produced earlier.If thats not quantum computing what else is that ?Rather than trying with optics,micro and nano electronics, super conductors,photonic quantum chips ,massless Weyl fermions, Majorana etc try by incorporating brain cells,stem cells,DNA,RNA and bio-stuff like that.Bio-cells are working quantum chips,life is quantum phenomena riddled with inconsistencies.We choose consistent results to be immediately practical for our use with the materials and material technology readily available to us at that moment of time. Bio-cells are easily available in nature, you dont have to mine for it.Constructive and imaginative use of them should be the next step science need to take.

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