Professor Akira Furusawa and his colleagues, in collaboration with NTT and RIKEN, have developed a new technology that applies state-of-the-art commercial optical communication technology to the field of optical quantum, and succeeded in real-time measurement of quantum signals at 43 GHz, the fastest in the world. By using the optical parametric amplifier developed, a detector for ultra high-speed optical communication can be applied to quantum measurement, and the team succeeded in real-time quantum amplification measurement in the 43 GHz band. Combining this with wavelength division multiplexing (WDM) technology, which is one of the 5G technologies, will enable the construction of a multi-core optical quantum computer, leading to the realization of a “super quantum computer”.The resulting paper was published in the online edition of Applied Physics Letters on 6 March.
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