Abstract

We show the minimum variance of estimation for the purity of coherently displaced thermal states depends on estimation of the original thermal mean photon number and a nuisance parameter from the coherent displacement.

Date

2026

Authors

Zachery St Pierre, Haley A Weinstein, Helena Belzer, Jonathan L Habif

Conference

CLEO: Fundamental Science

Pages

JTU. 106

Publisher

Optica Publishing Group