Superbroadcasting of mixed states
classification
🪐 quant-ph
keywords
broadcastinginputstatesmixedsuperbroadcastingcannotcopiescopy
read the original abstract
We derive the optimal universal broadcasting for mixed states of qubits. We show that the nobroadcasting theorem cannot be generalized to more than a single input copy. Moreover, for four or more input copies it is even possible to purify the input states while broadcasting. We name such purifying broadcasting superbroadcasting.
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