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Quantum Repeaters for Quantum Communication Quantum channels enable the implementation of communication tasks inaccessible to their classical counterparts. The most famous example is the distribution of secret key. However, in the absence of quantum repeaters, the rate at which these tasks can be performed is dictated by the losses in the quantum channel. In practice, channel losses have limited the reach of quantum protocols to short distances. Quantum repeaters have the potential to significantly increase the rates and reach beyond the limits of direct transmission. This talk will provide a high-level overview of different types of the proposed quantum repeater architectures. We will then look at the specific techniques that these schemes utilise in order to achieve long distance quantum communication, analyse their strengths and limitations as well as discuss the required hardware needed to implement them. Finally, I will introduce a novel type of quantum repeater schemes which make efficient use of the quantum communication channels by encoding quantum information in the bosonic error-correcting codes.

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Filip Rozpedek, University of Chicago
Zoom (https://uni-koeln.zoom.us/j/91902676314?pwd=SFAyR1kxRUYwV3hDRjhVWDdoTDNEdz09 )
Contact: Anne Matthies