https://doi.org/10.1140/epjqt/s40507-024-00288-0
Research
On the randomness of time ordered quantum measurements
1
Ericsson Research, Ericsson AB, Stockholm, Sweden
2
Department of Applied Physics, KTH Royal Institute of Technology, Stockholm, Sweden
Received:
1
December
2022
Accepted:
31
October
2024
Published online:
25
November
2024
A new method for efficient, high-quality randomness extraction is presented. The method relies on quantum processes such as the emission of single photons and their subsequent detection, where each detection event has an associated detection time. By establishing a list of time differences between a fixed number of events, a unique order can be established.
We note that, by utilising the number of ways to order the resulting list of time differences between the quantum events, the efficiency can be increased many-fold compared to current methods. The method delivers fundamentally uniform randomness and therefore, in principle, does not need debiasing.
Key words: Randomness / Photon detection
Supplementary Information The online version contains supplementary material available at https://doi.org/10.1140/epjqt/s40507-024-00288-0.
© The Author(s) 2024
Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
