Single-photon-added coherent state based postselected weak measurement
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866910935434657792 |
|---|---|
| author | Ren, Yi-Fang Turek, Yusuf |
| author_facet | Ren, Yi-Fang Turek, Yusuf |
| contents | We investigated precision measurements in a two-level system coupled to a single-photon-added coherent state (SPACS) under postselection measurement. We analyzed strategies for improving measurement precision, including parameter estimation and the signal-to-noise ratio (SNR) in postselected weak measurements using the photon statistics of SPACS as the meter. Our results demonstrate that SPACS-based postselected weak measurements can outperform conventional measurement schemes in terms of precision. Additionally, we explicitly introduced an alternative weak measurement method commonly applied in dispersive light-atom interactions. Our work offers a new way for addressing fundamental issues in quantum precision measurement based on photon statistics, and it provides a method for extracting the phase and phase shifts of radiation fields through the weak values of system observables. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2503_12865 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Single-photon-added coherent state based postselected weak measurement Ren, Yi-Fang Turek, Yusuf Quantum Physics We investigated precision measurements in a two-level system coupled to a single-photon-added coherent state (SPACS) under postselection measurement. We analyzed strategies for improving measurement precision, including parameter estimation and the signal-to-noise ratio (SNR) in postselected weak measurements using the photon statistics of SPACS as the meter. Our results demonstrate that SPACS-based postselected weak measurements can outperform conventional measurement schemes in terms of precision. Additionally, we explicitly introduced an alternative weak measurement method commonly applied in dispersive light-atom interactions. Our work offers a new way for addressing fundamental issues in quantum precision measurement based on photon statistics, and it provides a method for extracting the phase and phase shifts of radiation fields through the weak values of system observables. |
| title | Single-photon-added coherent state based postselected weak measurement |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2503.12865 |