使用非高斯态实现位置与动量的任意高精度联合估计
量子物理
2025-04-07 v2
摘要
我们解决了对量子粒子或等价地对玻色模复合场变化的位置和线性动量进行联合估计的问题。尽管这些变化由不可交换的算符生成，但我们表明，利用非高斯性可以在任意高精度和任意低量子不兼容性下同时估计它们。 Specifically, we demonstrate that any pure non-Gaussian state provides an advantage over all Gaussian states, whether pure or mixed. Moreover, properly tuned non-Gaussian mixtures of Gaussian states can also serve as a resource.
引用
@article{arxiv.2504.01910,
title = {Joint estimation of position and momentum with arbitrarily high precision using non-Gaussian states},
author = {Massimo Frigerio and Matteo G. A. Paris and Carlos Ernesto Lopetegui and Mattia Walschaers},
journal= {arXiv preprint arXiv:2504.01910},
year = {2025}
}
备注
5 pages, 5 pages of supplemental material