Pushing the limits in real-time measurements of quantum dynamics
- URL: http://arxiv.org/abs/2106.12502v2
- Date: Fri, 25 Feb 2022 16:36:12 GMT
- Title: Pushing the limits in real-time measurements of quantum dynamics
- Authors: Eric Kleinherbers, Philipp Stegmann, Annika Kurzmann, Martin Geller,
Axel Lorke, and J\"urgen K\"onig
- Abstract summary: We show that an evaluation scheme based on factorial cumulants can reduce the influence of such errors by orders of magnitude.
The error resilience is supported by a general theory for the detection errors as well as experimental data of single-electron tunnelling through a self-assembled quantum dot.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: Time-resolved studies of quantum systems are the key to understand quantum
dynamics at its core. The real-time measurement of individual quantum numbers
as they switch between certain discrete values, well known as random telegraph
signal, is expected to yield maximal physical insight. However, the signal
suffers from both systematic errors, such as a limited time resolution and
noise from the measurement apparatus, as well as statistical errors due to a
limited amount of data. Here we demonstrate that an evaluation scheme based on
factorial cumulants can reduce the influence of such errors by orders of
magnitude. The error resilience is supported by a general theory for the
detection errors as well as experimental data of single-electron tunnelling
through a self-assembled quantum dot. Thus, factorial cumulants push the limits
in the analysis of random telegraph data which represent a wide class of
experiments in physics, chemistry, engineering and life sciences.
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