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|Type:||Artigo de periódico|
|Title:||Quantum Bounds On Multiplayer Linear Games And Device-independent Witness Of Genuine Tripartite Entanglement|
|Abstract:||Here we study multiplayer linear games, a natural generalization of XOR games to multiple outcomes. We generalize a recently proposed efficiently computable bound, in terms of the norm of a game matrix, on the quantum value of two-player games to linear games with n players. As an example, we bound the quantum value of a generalization of the well-known CHSH game to n players and d outcomes. We also apply the bound to show in a simple manner that any nontrivial functional box, that could lead to trivialization of communication complexity in a multiparty scenario, cannot be realized in quantum mechanics. We then present a systematic method to derive device-independent witnesses of genuine tripartite entanglement. © 2016 American Physical Society.|
|Editor:||American Physical Society|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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