IQC Math and CS seminar featuring Junqiao Lin

Friday, June 6, 2025 2:00 pm - 3:00 pm EDT (GMT -04:00)

MIPco=coRE and generalized compression framework

Junqiao Lin | Centrum Wiskunde & Informatica (CWI)

Nonlocal games is a mathematical model used to model entanglement. Recently, Ji et al shows that estimating the optimal success rate for a nonlcoal game under the quantum (tensor) model is uncomputable in the celebrated result MIP*=RE result. A key part of this breakthrough involves a compression theorem for nonlocal games, a way to shrink the question and answer size of the game while preserving the optimal success rate to some degree.

In this talk, I will introduce the generalized compression framework, a generalization of the compression argument used in the MIP*=RE theorem, which could be applied to other computation problems unrelated to nonlocal games. I will explore how this framework can be used to prove the coRE-completeness of the complexity class MIPco, an MIP protocol where provers are allowed access to the commuting operator model of entanglement.

This talk is based on the upcoming paper MIPco=coRE. 

Location