English

Shared entanglement for three-party causal order guessing game

Quantum Physics 2024-10-01 v1

Abstract

In a variant of communication tasks, players cooperate in choosing their local strategies to compute a given task later, working separately. Utilizing quantum bits for communication and sharing entanglement between parties is a recognized method to enhance performance in these situations. In this work, we introduce the game for which three parties, Alice, Bob and Charlie, would like to discover the hidden order in which they make the moves. We show the advantage of quantum strategies that use shared entanglement and local operations over classical setups for discriminating operations' composition order. The role of quantum resources improving the probability of successful discrimination is also investigated.

Keywords

Cite

@article{arxiv.2409.19762,
  title  = {Shared entanglement for three-party causal order guessing game},
  author = {Ryszard Kukulski and Paulina Lewandowska and Karol Życzkowski},
  journal= {arXiv preprint arXiv:2409.19762},
  year   = {2024}
}

Comments

12 pages, 5 figures

R2 v1 2026-06-28T19:01:14.368Z