  State redistribution is the protocol in which, given an arbitrary tripartite
quantum state, with two of the subsystems initially being with Alice and one
being with Bob, the goal is for Alice to send one of her subsystems to Bob,
possibly with the help of prior shared entanglement. We derive an upper bound
on the second order asymptotic expansion for the quantum communication cost of
achieving state redistribution with a given finite accuracy. In proving our
result, we also obtain an upper bound on the quantum communication cost of this
protocol in the one-shot setting, by using the protocol of coherent state
merging as a primitive.
