Abstract
Sensing and measurement tasks in severely adverse conditions such as loss, noise, and dephasing can be improved by illumination with quantum states of light. Previous results have shown a modest reduction in the number of measurements necessary to achieve a given precision. Here, we compare three illumination strategies for estimating the relative phase in a noisy, lossy interferometer. When including a common phase fluctuation in the noise processes, we show that using an entangled probe achieves an advantage in parameter estimation precision that scales with the number of entangled modes. This work provides a theoretical foundation for the use of highly multimode entangled states of light for practical measurement tasks in experimentally challenging conditions.
| Original language | English |
|---|---|
| Article number | 022601 |
| Journal | Physical Review A |
| Volume | 105 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2022 |
Bibliographical note
Funding Information:This project has received funding from the United Kingdom Defense Science and Technology Laboratory (DSTL) under Contract No. DSTLX-100092545, the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 665148, and the National Science Foundation under Grant No. 1839216. This work was partially funded by French ANR under COSMIC Project No. (ANR-19-ASTR0020-01).
Funding
This project has received funding from the United Kingdom Defense Science and Technology Laboratory (DSTL) under Contract No. DSTLX-100092545, the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 665148, and the National Science Foundation under Grant No. 1839216. This work was partially funded by French ANR under COSMIC Project No. (ANR-19-ASTR0020-01).
ASJC Scopus subject areas
- Atomic and Molecular Physics, and Optics