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    Manipulating the Dark States of Superconducting Circuits in a Microwave Waveguide

    March 15, 2022, Categories  Astronomy/Space

    A team led by Gerhard Kirchmair has developed a system with which the dark states of superconducting circuits in a microwave waveguide can be manipulated from the outside. Credit: Mathieu Juan/University of Sherbrooke

    Experimental physicists led by Gerhard Kirchmair, together with theoretical physicists at the University of Oulu, Finland, have succeeded for the first time in controlling protected quantum states—so-called dark states—in superconducting quantum bits. The entangled states are 500 times more robust and could be used in quantum simulations. The method could also be used on other technological platforms.

    In Gerhard Kirchmair’s laboratory at the Institute of Quantum Optics and Quantum Information (IQOQI) of the Austrian Academy of Sciences in Innsbruck, Austria, superc...

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