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Dynamic Hysteresis Across a Dissipative Multi-Mode Phase Transition
by Marvin Röhrle, Jens Benary, Erik Bernhart, Herwig Ott
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Submission summary
| Authors (as registered SciPost users): | Marvin Röhrle |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2312.09848v2 (pdf) |
| Date accepted: | 2024-05-30 |
| Date submitted: | 2024-03-29 06:57 |
| Submitted by: | Röhrle, Marvin |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
Dissipative phase transitions are characteristic features in open quantum systems. Key signatures are the dynamical switching between different states in the vicinity of the phase transition and the appearance of hysteresis. Here, we experimentally study dynamic sweeps across a first order dissipative phase transition in a multi-mode driven-dissipative system. In contrast to previous studies, we perform sweeps of the dissipation strength instead of the driving strength. We extract exponents for the scaling of the hysteresis area in dependence of the sweep time and study the $g^{(2)}(0)$ correlations, which show non-trivial behavior. By changing the temperature of the system we investigate the importance of coherently pumping the system. We compare our results to numerical calculations done for a single mode variant of the system, and find surprisingly good agreement. Furthermore, we identify and discuss the differences between a scan of the dissipation strength and a scan of the driving strength.
Author comments upon resubmission
List of changes
- Rewrote the sentence in the abstract about the temperature dependence
- Rewrote the introduction starting from the third paragraph, it first introduces the concept of dissipative phase transition and then emphasizes the progress of hysteresis in related systems and adding more citations to appropriate papers
- We removed the single subsection heading in the "Physical setup and theoretical description" section
- Added a reference in the experimental setup part to the supplementary material, which has a section with a detailed explanation of the experimental sequence and a graph visualizing it
- Added another reference to a recent theoretical work, which uses a single mode model, in order to motivate our use of a single mode model for qualitative comparison
- In the discussion of the correlations we made it more clear, what part of the graph we refer to and added guides to the eye to figure 4 (a)
- We added a note about the $g^2$ of the theory curve going below 1
- In figure 5 (a) we added a theory fit with $\alpha = -1$ and added discussion to the text, that this is also acceptable
- We exchanged the x-axis in figure 6, the condensate fraction is now the main axis
- We focus in the temperature section more on the condensate fraction and coherence, since the hysteresis disappears for a single mode model with thermal (incoherent) drive
- We fixed errors in the labels of figure 5 and 6
- We fixed a grammatical error in the conclusion
- We changed the conclusion to reflect the changes in the other sections and introduction
Published as SciPost Phys. 16, 158 (2024)
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Dear Editor,
I have read the Authors reply to previous reports and the new version of the manuscript. The main issue concerning the clarity of the presentation has been satisfactorily addressed in my opinion, the manuscript reads better in particular the Introduction, the presentation of the model and the discussion of the results which, as I had mentioned in my first report, are of high scientific quality. I think the paper deserves publication in SciPost Physics.
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