Quantum voting and violation of Arrow’s Impossibility Theorem

QuICS Seminar

Nicole Yunger Halpern (Caltech)
Friday, March 20, 2015 - 2:00pm
CSS 3100A

We propose a quantum voting system in the spirit of quantum games such as the quantum Prisoner’s Dilemma. Our scheme violates a quantum analogue of Arrow’s Impossibility Theorem, which states that every (classical) constitution endowed with three innocuous-seeming properties is a dictatorship. Superpositions, interference, and entanglement of votes feature in voting tactics available to quantum voters but not to classical. (This work was conducted with Ning Bao. Reference: arXiv:1501.00458v1.)