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Raman Sideband Cooling in Optical Tweezer Arrays for Rydberg Dressing
by Nikolaus Lorenz, Lorenzo Festa, Lea-Marina Steinert, Christian Gross
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Submission summary
| Authors (as registered SciPost users): | Christian Gross |
| Submission information | |
|---|---|
| Preprint Link: | https://arxiv.org/abs/2010.07838v1 (pdf) |
| Date submitted: | Oct. 16, 2020, 8:40 a.m. |
| Submitted by: | Gross, Christian |
| Submitted to: | SciPost Physics |
| Ontological classification | |
|---|---|
| Academic field: | Physics |
| Specialties: |
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| Approach: | Experimental |
Abstract
Single neutral atoms trapped in optical tweezers and laser-coupled to Rydberg states provide a fast and flexible platform to generate configurable atomic arrays for quantum simulation. The platform is especially suited to study quantum spin systems in various geometries. However, for experiments requiring continuous trapping, inhomogeneous light shifts induced by the trapping potential and temperature broadening impose severe limitations. Here we show how Raman sideband cooling allows one to overcome those limitations, thus, preparing the stage for Rydberg dressing in tweezer arrays.
Current status:
Reports on this Submission
Report #2 by Anonymous (Referee 2) on 2020-11-24 (Invited Report)
- Cite as: Anonymous, Report on arXiv:2010.07838v1, delivered 2020-11-24, doi: 10.21468/SciPost.Report.2230
Strengths
1 - timely topic of producing and controlling single-atom tweezer arrays 2- novel system using K atoms 3 - carefully conducted experiments and detailed analysis of the presented data 4 - points the way towards interesting future applications of this K-tweezer setup 5 - correct choice of journal and well-adapted content to a specific audience
Weaknesses
Report
Requested changes
I have no specific comments or requests for changes. The paper is very well written and easy to follow. It is adressed at an expert audience which will find the details of the presentation very useful.
Report #1 by Anonymous (Referee 1) on 2020-11-12 (Invited Report)
- Cite as: Anonymous, Report on arXiv:2010.07838v1, delivered 2020-11-12, doi: 10.21468/SciPost.Report.2181
Strengths
2 - Demonstration of how Raman sideband cooling and adiabatic cooling can overcome the problem of inhomogeneous light shifts between the different tweezers
3 - The paper is clearly written.
Weaknesses
Report
I would recommend this for publication after responding to the few comments below. These include a few details missing that a reader could find useful
Requested changes
1 - Page 1 - Discussion of weak dressing regime. I think a reference could be useful here. Reference [45], for example, has a more in depth discussion on these equations
2 - Page 1 - The central hole in the objective lens is an interesting feature of the setup. Has such an objective lens been implemented before? If so a citation may be appropriate and if not I would ask if there are any complications that this may add to the creation of the tweezer arrays (unfocused part of beam?)
3 - Page 2 - Figure 1 caption. Scientific notation would be better to avoid confusion when using 20.000 (different meaning between German and English languages)
4 - Page 2 - "All Raman beams have linear polarization…", From the description it is a bit unclear to me what the polarizations of the beams are. What do you mean by in plane (which plane)? My assumption was the x-y plane, but the quantization axis is also in this plane. An alternative suggestion would be to show the polarization vectors in Figure 1(a)
5 - Page 4 - "...from a normal distributions..." -> "...from normal distributions..."
6 - Page 5 - Figure 4(a). Why are there only 2 simulation lines and 3 data sets?
7 - Page 6 - finesse 10.000 same comment as above about using scientific notation to avoid confusion
8 - Page 6/7 - the definition of the blue and red sidebands in Figure 7 and the equation from reference [49], seem to be in disagreement. Cooling would imply requiring $\bar{n}\rightarrow0$ meaning the ratio of $\bar{n}/(\bar{n}+1)\rightarrow0$. The equation implies that a small red sideband corresponds to cooling which is the opposite of that shown in Figure 7