An upper bound on the second order asymptotic expansion for the quantum communication cost of state redistribution
Quantum Physics
2017-01-12 v1
Abstract
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.
Keywords
Cite
@article{arxiv.1409.4352,
title = {An upper bound on the second order asymptotic expansion for the quantum communication cost of state redistribution},
author = {Nilanjana Datta and Min-Hsiu Hsieh and Jonathan Oppenheim},
journal= {arXiv preprint arXiv:1409.4352},
year = {2017}
}
Comments
11 pages, 1 figure