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4 papers · 1 filter
Quantum network communication -- the butterfly and beyond
Debbie Leung, Jonathan Oppenheim, Andreas Winter
We study the k-pair communication problem for quantum information in networks of quantum channels. We consider the asymptotic rates of high fidelity quantum communication between s…
Unifying classical and quantum key distillation
Matthias Christandl, Artur Ekert, Michal Horodecki +3
Assume that two distant parties, Alice and Bob, as well as an adversary, Eve, have access to (quantum) systems prepared jointly according to a tripartite state. In addition, Alice…
On parallel composition of zero-knowledge proofs with black-box quantum simulators
Rahul Jain, Alexandra Kolla, Gatis Midrijanis +1
Let L be a language decided by a constant-round quantum Arthur-Merlin (QAM) protocol with negligible soundness error and all but possibly the last message being classical. We prove…
How many copies are needed for state discrimination?
Aram W. Harrow, Andreas Winter
Given a collection of states (rho_1, ..., rho_N) with pairwise fidelities F(rho_i, rho_j) <= F < 1, we show the existence of a POVM that, given rho_i^{otimes n}, will identify i wi…