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    Scientists study new optical effects for quantum computer

    Today’s fundamental researches are targeted at improvement of information technologies, systems for processing and storing information, as well as at creation of a quantum computer which in many aspects will change the world and people’s lives.

    Scientists of South Ural State University (Chelyabinsk, Russia) are working in this area. In 2018, an article was published in Optics Letters journal. The authors of the article are research fellows of the SUSU Laboratory of Functional Materials, Igor Bychkov and Dmitry Kuzmin.

    “Our work demonstrates that using the Faraday effect might lead to a sufficiently big value of magnetic field. It is important to notice that creating an electromagnetic field localized in nano scales is a quite serious problem. Our method allows to create a big-enough magnetic field localized in a small-enough volume. These magnetic fields in nano scales can be used for various purposes,” says Igor Bychkov.

    The article considers propagation of electromagnetic waves in a nanostructure which includes a metal substrate, dielectric material and graphene. All elements of micro- and nano electronics are obtained by application of some material on the substrate. The light itself can create a magnetic field as it is not used in the form of a wave but is in a localized state near the nanostructure’s boundaries. The magnetic field created with the use of light, in turn, has an effect on optical properties of nanostructures.

    The research can be applicable for improvement of magnetic memory. Results of the research will find application in such spheres as nanophotonics, electronics, graphene optoelectronics, etc. Nanostructures with a magnetic field localized in a nanoscale can be used when designing elements of optical and quantum computers.

    Article: Plasmon mediated inverse Faraday effect in a graphene–dielectric–metal structure

    By Viktoria Matveichuk; photo by Viktoria Matveichuk, D. Kuzmin

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