IT House June 20 news, according to Phys.org, researchers at the University of Oxford in the United Kingdom recently published a paper in “Science Advances” to develop a device that uses the polarization of light to maximize information storage density. . The new study uses multiple polarization channels to perform parallel processing,Computing density increased by orders of magnitude over conventional electronic chips.
Light has exploitable properties, such as different wavelengths of light do not interfere with each other, and optical fibers can be used to transmit parallel data streams. Likewise, light of different polarizations will not affect each other, and each polarization can be used as an independent information channel, so that more information can be stored in multiple channels, which greatly improves the information density.
The research team, in collaboration with Professor C. David Wright of the University of Exeter, developed a HAD (Hybrid Active Dielectric) Nanowires, using a hybrid glass material that exhibits switchable material properties when illuminated by light pulses.Each nanowire shows a specific polarization directionselective responseso the information can be processed simultaneously using multiple polarizations in different directions.
▲ Hybrid nanowires can selectively switch devices according to polarization, pictured from Oxford University
Using this concept, the researchers developed aWorld’s First Photonic Computing Processor Using Light Polarization. Photonic computing is performed through multiple polarization channels, increasing the computational density by orders of magnitude compared to conventional electronic chips.
▲ Picture from Oxford University
IT House understands that as the size of traditional electronic chips is getting smaller and smaller, the number of transistors on the chip is approaching the limit, and Moore’s Law is also approaching the “ceiling”. In recent years, scientists and engineers have begun to find new “growth points” for chip development, and one of the ideas is to use photonic computing. For more than a decade, researchers in the laboratory of Professor Harish Bhaskaran, University of Oxford’s Department of Materials, have been investigating the use of light as a means of computation.
▲ Picture from Oxford University
June Sang Lee, first author of the paper and PhD student at Oxford University’s Department of Materials, said: “We all know that the advantage of photons over electrons is that light is faster and more powerful over large bandwidths. Therefore, our goal is to take full advantage of The advantages of this combination of photonics and tunable materials enable faster, denser information processing.”
Professor Bhaskaran, who led the work, said: “This is just the beginning of what we hope to see in the future, which is the exploitation of all the degrees of freedom that light provides, including polarization to greatly parallelize information processing, a research that is still in progress.early stage. “
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