Back to Search
Start Over
Heisenberg-limited quantum metrology using 100-photon Fock states
- Source :
- Nat. Phys. 2024
- Publication Year :
- 2023
-
Abstract
- Quantum metrology has emerged as a promising avenue for surpassing the limitations of classical mechanics in high-precision measurements. However, the practical implementation of quantum metrology is hindered by the challenges of manipulating exotic quantum states in large systems. Here, we propose and demonstrate a hardware-efficient approach to achieve Heisenberg-limited quantum metrology using large photon-number Fock states. We have developed a programmable photon number filter that efficiently generates Fock states with up to 100 photons in a high-quality superconducting microwave cavity. Using these highly nontrivial states in displacement and phase measurements, we demonstrate a precision scaling close to the Heisenberg limit and achieve a maximum metrological gain of up to 14.8 dB. Our hardware-efficient quantum metrology can be extended to mechanical and optical systems and provides a practical solution for high metrological gain in bosonic quantum systems, promising potential applications in radiometry and the search for new particles.<br />Comment: Main text: 10 pages, 4 figures; Supplement: 16 pages, 9 figures, 1 table
- Subjects :
- Quantum Physics
Subjects
Details
- Database :
- arXiv
- Journal :
- Nat. Phys. 2024
- Publication Type :
- Report
- Accession number :
- edsarx.2306.16919
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1038/s41567-024-02619-5