AI Article Synopsis
- Measurements are essential in quantum mechanics for both fundamental research and practical applications, including quantum metrology and quantum technologies.
- Recent advancements in weak-interaction-based protocols, such as Weak Measurements and Protective Measurements, have revealed unique features that provide surprising advantages across various applications.
- This study investigates how the strength of interaction affects the extraction of weak values when measuring polarization on single photons, highlighting that higher coupling intensity restricts the range of weak values that can be achieved.
Article Abstract
Measurements are crucial in quantum mechanics, for fundamental research as well as for applicative fields like quantum metrology, quantum-enhanced measurements and other quantum technologies. In the recent years, weak-interaction-based protocols like Weak Measurements and Protective Measurements have been experimentally realized, showing peculiar features leading to surprising advantages in several different applications. In this work we analyze the validity range for such measurement protocols, that is, how the interaction strength affects the weak value extraction, by measuring different polarization weak values on heralded single photons. We show that, even in the weak interaction regime, the coupling intensity limits the range of weak values achievable, setting a threshold on the signal amplification effect exploited in many weak measurement based experiments.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5934410 | PMC |
| http://dx.doi.org/10.1038/s41598-018-25156-7 | DOI Listing |
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