Open AccessSuper-sensitive rotation measurement with an orbital angular momentum atom-light hybrid interferometer
Author(s) -
Jinxian Guo,
Sheng Ming,
Yuan Wu,
L Q Chen,
Weiping Zhang
Publication year - 2020
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.409964
Subject(s) - physics , interferometry , astronomical interferometer , atom interferometer , optics , angular momentum , quantum metrology , quantum sensor , sagnac effect , photon , quantum limit , quantum optics , rotation (mathematics) , quantum , quantum information , quantum mechanics , quantum network , geometry , mathematics
Lights carrying orbital angular momentum (OAM) have potential applications in precise rotation measurement, especially in remote sensing. Interferometers, especially nonlinear quantum interferometers, have also been proven to greatly improve the measurement accuracy in quantum metrology. By combining these two techniques, we theoretically propose a new atom-light hybrid Sagnac interferometer with OAM lights to advance the precision of the rotation measurement. A rotation sensitivity below standard quantum limit is achieved due to the enhancement of the quantum correlation of the interferometer even with 96% photon losses. This makes our protocol robustness to the photon loss. Furthermore, combining the slow light effect brings us at least four orders of magnitude of sensitivity better than the earth rotation rate. This new type interferometer has potential applications in high precision rotation sensing.