In butterfly-based networks, achievable classical multicast rates exceed upper bounds on quantum multicast rates, with the gap growing up to one bit per receiver when blocks are added in parallel.
We encounter a bottleneck at node R1 as data is waiting to be sent from both senders through the channel (R1, R2)
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Exploring the limitations of quantum networking through butterfly-based networks
In butterfly-based networks, achievable classical multicast rates exceed upper bounds on quantum multicast rates, with the gap growing up to one bit per receiver when blocks are added in parallel.