Retrocausal capacity of a quantum channel IJQF Weekly Papers • quant-ph updates on arXiv.org / 13h arXiv:2509.08965v1 Announce Type: new Abstract: We study the capacity of a quantum channel for retrocausal communication, where messages are transmitted backward in time, from a sender in the future to a receiver in the past, through a noisy postselected closed timelike curve (P-CTC) represented by the... Read more →