Title
ANCHORED PARALLEL REPETITION FOR NONLOCAL GAMES
Abstract
We introduce a simple transformation on two-player nonlocal games, called "anchoring," and prove an exponential-decay parallel repetition theorem for all anchored games in the setting of quantum entangled players. This transformation is inspired in part by the Feige-Kilian transformation [SIAM J. Comput., 30 (2000), pp. 324-346], and has the property that if the quantum value of the original game G is v, then the quantum value of the anchored game G(perpendicular to) is 1 - (1 - alpha)(2) center dot (1 - v), where alpha is a parameter of the transformation. In particular the anchored game has quantum value 1 if and only if the original game G has quantum value 1. This provides the first gap amplification technique for general two-player nonlocal games that achieves exponential decay of the quantum value.
Year
DOI
Venue
2022
10.1137/21M1405927
SIAM JOURNAL ON COMPUTING
Keywords
DocType
Volume
nonlocal games, quantum complexity theory, quantum information, parallel repetition, hardness amplification, gap amplification
Journal
51
Issue
ISSN
Citations 
2
0097-5397
0
PageRank 
References 
Authors
0.34
0
3
Name
Order
Citations
PageRank
Mohammad Bavarian100.34
Thomas Vidick237731.69
Henry Yuen3339.52