Details
| Original language | English |
|---|---|
| Article number | 033102 |
| Journal | Physical Review A |
| Volume | 108 |
| Issue number | 3 |
| Publication status | Published - 5 Sept 2023 |
Abstract
Direct laser cooling and trapping of molecules to temperature below the Doppler limit and density exceeding 108 are challenging due to the sub-Doppler heating effects of a molecular magneto-optical trap (MOT). In our previous paper [S. Xu, Phys. Rev. Res. 4, L042036 (2022)2643-156410.1103/PhysRevResearch.4.L042036], we presented a general approach to engineering the sub-Doppler force by tuning the AC Stark shift with the addition of a blue-detuned laser. Here, by employing the Bayesian optimization method to optical Bloch equations, we have identified multiple blue-detuned MOT schemes for the CaF molecule. From the three-dimensional Monte Carlo simulation, we obtained a MOT temperature and density of 14 μK and 4.5×108 cm-3, respectively. Our findings present a potential avenue for directly loading molecular MOTs into conservative traps, which can capitalize on the high density and low temperature of the MOTs.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Atomic and Molecular Physics, and Optics
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Physical Review A, Vol. 108, No. 3, 033102, 05.09.2023.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Blue-detuned molecular magneto-optical trap schemes based on Bayesian optimization
AU - Xu, S.
AU - Li, R.
AU - Xia, Y.
AU - Siercke, M.
AU - Ospelkaus, S.
N1 - Funding Information: This work was supported by the National Natural Science Foundation of China under Grants No. 11834003 and No. 91836103. M. Siercke and S. Ospelkaus gratefully acknowledge financial support through Germany's Excellence Strategy—EXC-2123/1 QuantumFrontiers.
PY - 2023/9/5
Y1 - 2023/9/5
N2 - Direct laser cooling and trapping of molecules to temperature below the Doppler limit and density exceeding 108 are challenging due to the sub-Doppler heating effects of a molecular magneto-optical trap (MOT). In our previous paper [S. Xu, Phys. Rev. Res. 4, L042036 (2022)2643-156410.1103/PhysRevResearch.4.L042036], we presented a general approach to engineering the sub-Doppler force by tuning the AC Stark shift with the addition of a blue-detuned laser. Here, by employing the Bayesian optimization method to optical Bloch equations, we have identified multiple blue-detuned MOT schemes for the CaF molecule. From the three-dimensional Monte Carlo simulation, we obtained a MOT temperature and density of 14 μK and 4.5×108 cm-3, respectively. Our findings present a potential avenue for directly loading molecular MOTs into conservative traps, which can capitalize on the high density and low temperature of the MOTs.
AB - Direct laser cooling and trapping of molecules to temperature below the Doppler limit and density exceeding 108 are challenging due to the sub-Doppler heating effects of a molecular magneto-optical trap (MOT). In our previous paper [S. Xu, Phys. Rev. Res. 4, L042036 (2022)2643-156410.1103/PhysRevResearch.4.L042036], we presented a general approach to engineering the sub-Doppler force by tuning the AC Stark shift with the addition of a blue-detuned laser. Here, by employing the Bayesian optimization method to optical Bloch equations, we have identified multiple blue-detuned MOT schemes for the CaF molecule. From the three-dimensional Monte Carlo simulation, we obtained a MOT temperature and density of 14 μK and 4.5×108 cm-3, respectively. Our findings present a potential avenue for directly loading molecular MOTs into conservative traps, which can capitalize on the high density and low temperature of the MOTs.
UR - http://www.scopus.com/inward/record.url?scp=85173026330&partnerID=8YFLogxK
U2 - 10.48550/arXiv.2305.16576
DO - 10.48550/arXiv.2305.16576
M3 - Article
AN - SCOPUS:85173026330
VL - 108
JO - Physical Review A
JF - Physical Review A
SN - 2469-9926
IS - 3
M1 - 033102
ER -