Thermodynamic principle for quantum metrology
| Autor: | Chu, Yaoming, Cai, Jianming |
|---|---|
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Phys. Rev. Lett.128.200501 (2022) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevLett.128.200501 |
| Popis: | The heat dissipation in quantum metrology represents not only an unavoidable problem towards practical applications of quantum sensing devices but also a fundamental relationship between thermodynamics and quantum metrology. However, a general thermodynamic principle which governs the rule of energy consumption in quantum metrology, similar to Landauer's principle for heat dissipation in computations, has remained elusive. Here, we establish such a physical principle for energy consumption in order to achieve a certain level of measurement precision in quantum metrology, and show that it is intrinsically determined by the erasure of quantum Fisher information. The principle provides a powerful tool to investigate the advantage of quantum resources, not only in measurement precision but also in energy efficiency. It also serves as a bridge between thermodynamics and various fundamental physical concepts related in quantum physics and quantum information theory. Comment: Comments are welcome |
| Databáze: | arXiv |
| Externí odkaz: |
|