Communication cost of nonlocal correlations

Bo-An Tsai^1*, Yeong-Cherng Liang^1,2

¹Department of physics, National Cheng Kung University, Tainan, Taiwan
²Physics Division, National Center for Theoretical Sciences, Taipei, Taiwan

* Presenter:Bo-An Tsai, email:L26081121@gs.ncku.edu.tw

Bell nonlocality plays a fundamental role in quantum foundations and quantum information science. The violation of Bell inequalities by some correlation between measurement outcomes means that it cannot be generated from shared randomness alone. Interestingly, when augmented by a small amount of classical communication, it is possible to simulate all quantum correlations originating from a two-qubit maximally entangled state. Beyond that, little is known regarding the amount of classical communication required to simulate quantum correlations in a general Bell scenario, be it the worst case, or on average. In this work, we report progress on determining the largest average communication cost of simulating Bell-nonlocal correlations in various Bell scenarios.

Keywords: Quantum nonlocality, quantum correlation, simulation