Quantifying the phase of quantum states
Quantum Physics
2023-08-10 v1
Abstract
Phase is a basic ingredient for quantum states since quantum mechanics uses complex numbers to describe quantum states. In this letter, we introduce a rigorous framework to quantify the phase of quantum states. To do so, we regard phase as a quantum resource, and specify the free states and free operations. We determine the conditions a phase measure should satisfy and provide some phase measures. We also propose the notion of intrinsic phase for quantum states.
Cite
@article{arxiv.2304.09028,
title = {Quantifying the phase of quantum states},
author = {Jianwei Xu},
journal= {arXiv preprint arXiv:2304.09028},
year = {2023}
}
Comments
8 pages, 3 figures. Any comments are welcome!