Likelihood Theory in a Quantum World: tests with Quantum coins and computers
Quantum Physics
2020-04-22 v1
Abstract
By repeated trials, one can determine the fairness of a classical coin with a confidence which grows with the number of trials. A quantum coin can be in a superposition of heads and tails and its state is most generally a density matrix. Given a string of qubits representing a series of trials, one can measure them individually and determine the state with a certain confidence. We show that there is an improved strategy which measures the qubits after entangling them, which leads to a greater confidence. This strategy is demonstrated on the simulation facility of IBM quantum computers.
Cite
@article{arxiv.1901.10704,
title = {Likelihood Theory in a Quantum World: tests with Quantum coins and computers},
author = {Arpita Maitra and Joseph Samuel and Supurna Sinha},
journal= {arXiv preprint arXiv:1901.10704},
year = {2020}
}
Comments
four pages three figures, submitted for publication