We introduce and analyze a task that we call <italic>Markovianization</italic>, in which a tripartite quantum state is transformed to a quantum Markov chain by a randomizing operation on one of the… (More)

We introduce and analyze a task in which a tripartite quantum state is transformed to an approximately recoverable state by a randomizing operation on one of the three subsystems. We consider cases… (More)

We analyze implementations of bipartite unitaries by means of local operations and classical communication (LOCC) assisted by shared entanglement. We employ concepts and techniques developed in the… (More)

We consider a distributed decoupling task for a tripartite system in which Bob and Charlie “exclude” Alice by destroying correlation between BC and A in a tripartite state ρABC shared by the parties… (More)

Suppose that Alice and Bob are located in distant laboratories, which are connected by an ideal quantum channel. Suppose further that they share many copies of a quantum state ρABE , such that Alice… (More)