This title appears in the Scientific Report :
2020
Please use the identifier:
http://dx.doi.org/10.7566/JPSJ.89.064005 in citations.
Please use the identifier: http://hdl.handle.net/2128/25099 in citations.
Long-Time Correlations in Single-Neutron Interferometry Data
Long-Time Correlations in Single-Neutron Interferometry Data
We present a detailed analysis of the time series of time-stamped neutron counts obtained by single-neutron interferometry. The neutron counting statistics display the usual Poissonian behavior, but the variance of the neutron counts does not. Instead, the variance is found to exhibit a dependence o...
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Personal Name(s): | Willsch, Madita |
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Willsch, Dennis / Michielsen, Kristel / Jin, Fengping / Denkmayr, Tobias / Sponar, Stephan / Hasegawa, Yuji / De Raedt, Hans (Corresponding author) | |
Contributing Institute: |
Jülich Supercomputing Center; JSC |
Published in: | Journal of the Physical Society of Japan, 89 (2020) 6, S. 064005 - |
Imprint: |
Tokyo
The Physical Society of Japan
2020
|
DOI: |
10.7566/JPSJ.89.064005 |
Document Type: |
Journal Article |
Research Program: |
Doktorand ohne besondere Förderung Computational Science and Mathematical Methods |
Link: |
Get full text Get full text Get full text Published on 2020-05-22. Available in OpenAccess from 2021-05-22. Published on 2020-05-22. Available in OpenAccess from 2021-05-22. Get full text |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/25099 in citations.
We present a detailed analysis of the time series of time-stamped neutron counts obtained by single-neutron interferometry. The neutron counting statistics display the usual Poissonian behavior, but the variance of the neutron counts does not. Instead, the variance is found to exhibit a dependence on the phase-shifter setting which can be explained by a probabilistic model that accounts for fluctuations of the phase shift. The time series of the detection events exhibit long-time correlations with amplitudes that also depend on the phase-shifter setting. These correlations appear as damped oscillations with a period of about 2.8 s. By simulation, we show that the correlations of the time differences observed in the experiment can be reproduced by assuming that, for a fixed setting of the phase shifter, the phase shift experienced by the neutrons varies periodically in time with a period of 2.8 s. The same simulations also reproduce the behavior of the variance. Our analysis of the experimental data suggests that time-stamped data of single-particle interference experiments may exhibit transient features that require a description in terms of non-stationary processes, going beyond the standard quantum model of independent random events. |