354 citations · 1.2k across the 13 of their papers we have counts for
13 papers
A generalized Grothendieck inequality and entanglement in XOR games
Jop Briët, Harry Buhrman, Ben Toner
Suppose Alice and Bob make local two-outcome measurements on a shared entangled state. For any d, we show that there are correlations that can only be reproduced if the local dimen…
Preparation contextuality powers parity-oblivious multiplexing
Robert W. Spekkens, D. H. Buzacott, A. J. Keehn +2
In a noncontextual hidden variable model of quantum theory, hidden variables determine the outcomes of every measurement in a manner that is independent of how the measurement is i…
Coherent state exchange in multi-prover quantum interactive proof systems
Debbie Leung, Ben Toner, John Watrous
We show that any number of parties can coherently exchange any one pure quantum state for another, without communication, given prior shared entanglement. Two applications of this…
The quantum moment problem and bounds on entangled multi-prover games
Andrew C. Doherty, Yeong-Cherng Liang, Ben Toner +1
We study the quantum moment problem: Given a conditional probability distribution together with some polynomial constraints, does there exist a quantum state rho and a collection o…
Nonclassicality without entanglement enables bit commitment
Howard Barnum, Oscar C. O. Dahlsten, Matthew Leifer +1
We investigate the existence of secure bit commitment protocols in the convex framework for probabilistic theories. The framework makes only minimal assumptions, and can be used to…
Finite de Finetti theorem for conditional probability distributions describing physical theories
Matthias Christandl, Ben Toner
We work in a general framework where the state of a physical system is defined by its behaviour under measurement and the global state is constrained by no-signalling conditions. W…