Phase-space quantum Wiener-Khintchine theorem
Quantum Physics
2022-09-07 v2
Abstract
We derive a quantum version of the classical-optics Wiener-Khintchine theorem within the framework of detection of phase-space displacements with a suitably designed quantum ruler. A phase-pace based quantum mutual coherence function is introduced that includes the contribution of the detector. We obtain an universal equality linking resolution with coherence. This is illustrated with the case of Gaussian states and number states.
Cite
@article{arxiv.2206.06020,
title = {Phase-space quantum Wiener-Khintchine theorem},
author = {Ainara Álvarez-Marcos and Alfredo Luis},
journal= {arXiv preprint arXiv:2206.06020},
year = {2022}
}
Comments
6 pages, 2 figures. This arXiv version includes some of the last referee recommendations that were not included in the journal version