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Compression of sources of probability distributions and density operators
Andreas Winter
We study the problem of efficient compression of a stochastic source of probability distributions. It can be viewed as a generalization of Shannon's source coding problem. It has r…
Remarks on additivity of the Holevo channel capacity and of the entanglement of formation
Keiji Matsumoto, Toshiyuki Shimono, Andreas Winter
The purpose of these notes is to discuss the relation between the additivity questions regarding the quantities (Holevo) capacity of a quantum channel T and entanglement of formati…
Error exponents for entanglement concentration
Masahito Hayashi, Masato Koashi, Keiji Matsumoto +2
Consider entanglement concentration schemes that convert n identical copies of a pure state into a maximally entangled state of a desired size with success probability being close…
Trading quantum for classical resources in quantum data compression
Patrick Hayden, Richard Jozsa, Andreas Winter
We study the visible compression of a source E of pure quantum signal states, or, more formally, the minimal resources per signal required to represent arbitrarily long strings of…
On the communication cost of entanglement transformations
Patrick Hayden, Andreas Winter
We study the amount of communication needed for two parties to transform some given joint pure state into another one, either exactly or with some fidelity. Specifically, we presen…