تقرير
Single-photon-added coherent state based measurement transition and its advantages in precision measurement
| العنوان: | Single-photon-added coherent state based measurement transition and its advantages in precision measurement |
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| المؤلفون: | Turek, Yusuf, Islam, Akbar, Abliz, Ahmad |
| المصدر: | The European Physical Journal Plus 138, 72 (2023) |
| سنة النشر: | 2021 |
| المجموعة: | Quantum Physics |
| مصطلحات موضوعية: | Quantum Physics |
| الوصف: | In this work, the measurement transition as well as precision measurement advantages of single-photon-added coherent state after postselected von Neumann measurement are investigated. We noticed that the weak-to-strong measurement transition characterized by the shifts of pointer's position and momentum variables occurred in continuously by controlling a dimensionless parameter associated with system-pointer coupling. We calculate the ratio between the signal-to-noise ratio of nonpostselected and postselected measurements, and the latter is used to find the quantum Fisher information. We found that the single-photon-added coherent pointer state can improve the precision of the measurement processes such as signal-to-noise ratio and parameter estimation after postselected von Neumann measurement characterized by postselection and weak value. Furthermore, contrary to the results of several previous studies, we found that the anomalous large weak values can't improve the precision measurement processes related to single-photon-added coherent state. Comment: 9pages, 6 figures |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1140/epjp/s13360-023-03659-1 |
| URL الوصول: | http://arxiv.org/abs/2109.10128 |
| رقم الأكسشن: | edsarx.2109.10128 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1140/epjp/s13360-023-03659-1 |
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