Phase-Resolved Rydberg Atom Field Sensing using Quantum Interferometry
Abstract
Although Rydberg atom-based electric field sensing provides key advantages over traditional antenna-based detection, it remains limited by the need for a local oscillator (LO) for low-field and phase resolved detection. In this work, we demonstrate that closed-loop quantum interferometric schemes can be used to generate a system-internal reference that can directly replace an external LO for Rydberg field sensing. We reveal that this quantum-interferometrically defined internal reference phase and frequency can be used analogously to a traditional LO for atom-based down-mixing to an intermediate frequency for lock-in phase detection. We demonstrate that this LO-equivalent functionality provides analogous benefits to an LO, including full 360 phase resolution as well as improved sensitivity. The general applicability of this approach is confirmed by demodulating a four phase-state signal broadcast on the atoms. Our approach opens up new sensing schemes and provides a clear path towards all-optical Rydberg atom sensing implementations.
Keywords
Cite
@article{arxiv.2212.00185,
title = {Phase-Resolved Rydberg Atom Field Sensing using Quantum Interferometry},
author = {Samuel Berweger and Alexandra B. Artusio-Glimpse and Andrew P. Rotunno and Nikunjkumar Prajapati and Joseph D. Christesen and Kaitlin R. Moore and Matthew T. Simons and Christopher L. Holloway},
journal= {arXiv preprint arXiv:2212.00185},
year = {2023}
}