Controlling rovibrational state populations of polar molecules in inhomogeneous electric fields of the Stark deceleration: molecular dynamics and quantum chemistry simulations

E. J. Zak, Jochen Küpper, Andrey Yachmenev

arXiv:2506.04798Jan 1, 20250 citations

arXiv:1004.4797 · The European Physical Journal D

Slowing polar molecules using a wire Stark decelerator

Adela Marian, Henrik Haak, P. Geng, Gerard Meijer

Published May 24, 2010• 10 citations

arXiv HTML PDF

DOI: 10.1140/epjd/e2010-00143-3

Related papers

Efficient Stark deceleration of cold polar molecules

Eric R. Hudson, Jason R. Bochinski, Heather J. Lewandowski +2 more

arXiv:physics/0407013The European Physical Journal DOct 18, 200446 citations

A quasi-analytic model of a linear Stark accelerator/decelerator for polar molecules

Břetislav Friedrich

The European Physical Journal DNov 1, 200418 citations

Creating slow cold molecules by Optical Stark Deceleration

R. C. Fulton, Alexis I. Bishop, MN Shneider +1 more

Jan 1, 20060 citations

Slowing molecular beams using electrostatic Stark deceleration, magnetostatic Zeeman deceleration and optical Stark deceleration

Hou Shun-Yong, Yaling Yin, Yin Jianping

WuliJan 1, 20170 citations

An Alternative Operation Scheme to Improve the Efficiency of a Stark Decelerator

Mei Du, Dongdong Zhang, Dajun Ding

A Stark decelerator can slow down polar molecules to very low velocities. When the velocities are very low, the number of cold molecules obtained is very small. In order to obtain a higher quantity of cold molecules, inspired by the work of Reens et al. [Phys. Rev. Res. 2 (2020) 033 095], we propose an alternative method of operating a Stark decelerator. Through the trajectory simulation of OH molecules in the decelerator, we find that the number of cold molecules can be greatly increased by one order of magnitude at both low and high final velocities on a Stark decelerator consisting of around 150 electrodes. This development is due to the improved longitudinal and the transverse focusing property provided by the new switching schemes and the high-voltage configurations on the decelerator unit.A Stark decelerator can slow down polar molecules to very low velocities. When the velocities are very low, the number of cold molecules obtained is very small. In order to obtain a higher quantity of cold molecules, inspired by the work of Reens et al. [Phys. Rev. Res. 2 (2020) 033 095], we propose an alternative method of operating a Stark decelerator. Through the trajectory simulation of OH molecules in the decelerator, we find that the number of cold molecules can be greatly increased by one order of magnitude at both low and high final velocities on a Stark decelerator consisting of around 150 electrodes. This development is due to the improved longitudinal and the transverse focusing property provided by the new switching schemes and the high-voltage configurations on the decelerator unit.

Chinese Physics LettersDec 1, 20214 citations

Controlling rovibrational state populations of polar molecules in inhomogeneous electric fields of the Stark deceleration: molecular dynamics and quantum chemistry simulations

E. J. Zak, Jochen Küpper, Andrey Yachmenev

We propose a modified Stark-chirped rapid adiabatic passage technique for a robust rovibrational population transfer in the gas phase molecules in the presence of certain inhomogeneous electric fields. As an example application, the new state switching scheme is shown to greatly enhance the process of slowing polar ammonia molecules in the Stark decelerator. High-level quantum mechanical simulations show that a virtually complete population inversion between a selected pair of weak-field and strong-field seeking states of NH $_3$ can be achieved. Strong dc electric fields within the Stark decelerator are used as part of the rovibrational population transfer protocol. Classical-dynamics simulations for ammonia demonstrate notable improvements in the longitudinal phase space acceptance of the Stark decelerator upgraded with the state switching and an increased deceleration efficiency with respect to the standard Stark deceleration technique.We propose a modified Stark-chirped rapid adiabatic passage technique for a robust rovibrational population transfer in the gas phase molecules in the presence of certain inhomogeneous electric fields. As an example application, the new state switching scheme is shown to greatly enhance the process of slowing polar ammonia molecules in the Stark decelerator. High-level quantum mechanical simulations show that a virtually complete population inversion between a selected pair of weak-field and strong-field seeking states of NH$_3$ can be achieved. Strong dc electric fields within the Stark decelerator are used as part of the rovibrational population transfer protocol. Classical-dynamics simulations for ammonia demonstrate notable improvements in the longitudinal phase space acceptance of the Stark decelerator upgraded with the state switching and an increased deceleration efficiency with respect to the standard Stark deceleration technique.

arXiv:2506.04798Jan 1, 20250 citations

_3

can be achieved. Strong dc electric fields within the Stark decelerator are used as part of the rovibrational population transfer protocol. Classical-dynamics simulations for ammonia demonstrate notable improvements in the longitudinal phase space acceptance of the Stark decelerator upgraded with the state switching and an increased deceleration efficiency with respect to the standard Stark deceleration technique.