Issue |
EPL
Volume 133, Number 3, February 2021
|
|
---|---|---|
Article Number | 30001 | |
Number of page(s) | 7 | |
Section | General | |
DOI | https://doi.org/10.1209/0295-5075/133/30001 | |
Published online | 26 March 2021 |
Violation of Heisenberg's error-disturbance relation by Stern-Gerlach measurements
1 Graduate School of Informatics, Nagoya University - Chikusa-ku, Nagoya, 464-8601, Japan
2 College of Engineering, Chubu University - 1200 Matsumoto- cho, Kasugai-shi, Aichi, 487-8501, Japan
Received: 18 September 2020
Accepted: 4 January 2021
Although Heisenberg's uncertainty principle is represented by a rigorously proven relation about intrinsic indeterminacy in quantum states, Heisenberg's error-disturbance relation (EDR) has been commonly believed as another aspect of the principle. However, recent developments of quantum measurement theory made Heisenberg's EDR testable to observe its violations. Here, we study the EDR for Stern-Gerlach measurements. In a previous report, it has been pointed out that their EDR is close to the theoretical optimal. The present letter reports that even the original Stern-Gerlach experiment in 1922, as the available experimental data show, violates Heisenberg's EDR. The results suggest that Heisenberg's EDR is more ubiquitously violated than it has long been supposed.
PACS: 03.65.Ta – Foundations of quantum mechanics; measurement theory
© 2021 EPLA
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.