scholarly journals Accurate prediction and measurement of vibronic branching ratios for laser cooling linear polyatomic molecules

2021 ◽  
Vol 155 (9) ◽  
pp. 091101
Author(s):  
Chaoqun Zhang ◽  
Benjamin L. Augenbraun ◽  
Zack D. Lasner ◽  
Nathaniel B. Vilas ◽  
John M. Doyle ◽  
...  
Keyword(s):  
Laser Cooling ◽  
Branching Ratios ◽  
Polyatomic Molecules ◽  
Accurate Prediction

Vibrational branching ratios and radiative lifetimes in the laser cooling of AlBr

2017 ◽  
Vol 19 (7) ◽  
pp. 5519-5524 ◽  
Author(s):  
Yufeng Gao ◽  
Mingjie Wan
Keyword(s):  
Quantum Chemistry ◽  
Ab Initio ◽  
Laser Cooling ◽  
Branching Ratios ◽  
Radiative Lifetimes

The feasibility of laser cooling of the AlBr molecule is investigated usingab initioquantum chemistry.

Laser cooling of copper monofluoride: a theoretical study including spin–orbit coupling

RSC Advances ◽  
2016 ◽  
Vol 6 (102) ◽  
pp. 100568-100576 ◽  
Author(s):  
Mingkai Fu ◽  
Jianwei Cao ◽  
Haitao Ma ◽  
Wensheng Bian
Keyword(s):  
Laser Cooling ◽  
Theoretical Study ◽  
Branching Ratios ◽  
Orbit Coupling ◽  
Spin Orbit Coupling ◽  
Spin Orbit ◽  
Coupling Effects ◽  
Radiative Lifetimes

A laser cooling scheme is proposed for CuF by including the spin–orbit coupling effects, and based on our calculated radiative lifetimes and vibrational branching ratios.

Towards accurate prediction for laser-coolable molecules: relativistic coupled-cluster calculations for yttrium monoxide and prospects for improving its laser cooling efficiencies

2020 ◽  
Vol 22 (45) ◽  
pp. 26167-26177
Author(s):  
Chaoqun Zhang ◽  
Hannah Korslund ◽  
Yewei Wu ◽  
Shiqian Ding ◽  
Lan Cheng
Keyword(s):  
Laser Cooling ◽  
Electron Correlation ◽  
Accurate Prediction ◽  
Coupled Cluster ◽  
Correlation Effects ◽  
Cluster Calculations ◽  
Accurate Treatment ◽  
Electron Correlation Effects ◽  
Coupled Cluster Calculations

Benchmark relativistic coupled-cluster calculations for yttrium monoxide (YO) with accurate treatment of relativistic and electron correlation effects are reported.

scholarly journals Direct laser cooling of a symmetric top molecule

Science ◽  
2020 ◽  
Vol 369 (6509) ◽  
pp. 1366-1369 ◽  
Author(s):  
Debayan Mitra ◽  
Nathaniel B. Vilas ◽  
Christian Hallas ◽  
Loïc Anderegg ◽  
Benjamin L. Augenbraun ◽  
...  
Keyword(s):  
Small Molecules ◽  
Laser Cooling ◽  
Particle Physics ◽  
Complex Structure ◽  
Optical Tweezer ◽  
Polyatomic Molecules ◽  
Chiral Molecules ◽  
Direct Laser ◽  
Spin Isomers ◽  
Quantum Science

Ultracold polyatomic molecules have potentially wide-ranging applications in quantum simulation and computation, particle physics, and quantum chemistry. For atoms and small molecules, direct laser cooling has proven to be a powerful tool for quantum science in the ultracold regime. However, the feasibility of laser-cooling larger, nonlinear polyatomic molecules has remained unknown because of their complex structure. We laser-cooled the symmetric top molecule calcium monomethoxide (CaOCH3), reducing the temperature of ~104 molecules from 22 ± 1 millikelvin to 1.8 ± 0.7 millikelvin in one dimension and state-selectively cooling two nuclear spin isomers. These results demonstrate that the use of proper ro-vibronic transitions enables laser cooling of nonlinear molecules, thereby opening a path to efficient cooling of chiral molecules and, eventually, optical tweezer arrays of complex polyatomic species.

scholarly journals Vibrational branching ratios and hyperfine structure of 11BH and its suitability for laser cooling

2014 ◽  
Vol 2 ◽  
Author(s):  
R. J. Hendricks ◽  
D. A. Holland ◽  
S. Truppe ◽  
B. E. Sauer ◽  
M. R. Tarbutt
Keyword(s):  
Hyperfine Structure ◽  
Laser Cooling ◽  
Branching Ratios

Proposal for Laser Cooling of Complex Polyatomic Molecules

ChemPhysChem ◽  
2016 ◽  
Vol 17 (22) ◽  
pp. 3641-3648 ◽  
Author(s):  
Ivan Kozyryev ◽  
Louis Baum ◽  
Kyle Matsuda ◽  
John M. Doyle
Keyword(s):  
Laser Cooling ◽  
Polyatomic Molecules
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