Andreas Winter

TL;DR: Under some regularity assumptions on the Hamiltonian, the Gibbs entropy at the given energy roughly takes the role of the Hilbert space dimension in the finite-dimensional Fannes inequality.

TL;DR: Using the Stinespring dilation theorem, a formula is given for the channel capacity involving entanglement of formation, which can be used to show that additivity of the latter for some states can be inferred from theAdditivity of capacity for certain channels.

TL;DR: It is shown that genuine multiparty quantum correlations can exist on its own, without a supporting background of genuine multipartite classical correlations, even in macroscopic systems.

TL;DR: In this paper, the problem of characterising the optimal rate at which a discrete memoryless channel can be used for bit commitment was investigated, and it was shown that the answer is very intuitive: it is the maximum equivocation of the channel (after removing trivial redundancy), even when unlimited noiseless bidirectional side communication is allowed.

TL;DR: It is shown that a strong converse theorem holds for the classical capacity of all entanglement-breaking channels and all Hadamard channels (the complementary channels of the former) that the probability of correctly decoding a classical message converges exponentially fast to zero in the limit of many channel uses if the rate of communication exceeds the classical Capacity.