Topic:Stark and Zeeman deceleration methods for production of cold molecules

Speaker: T.Damjanović

Report Time：8.26（Thursday）13:30

Report Location:Tecent Meeting: https://meeting.tencent.com/dm/J7tOLKbBl6q2 ID:162 889 099

Hosted by: Institute of Atomic and Molecular Physics

Introduction：

Dr. Tomislav Dmajnović  graduated in 2013 with the M.S. in physics from the University of  Zagreb. For his master thesis he did research in the area of  theoretical/computational photonics under supervision of Prof. Hrvoje  Buljan, Thesis title:”Pseudo-magnetic fields for photons”. In 2014. He  joined the group of Prof. Johannes Hecker Denschlag at the Ulm  University, Germany, where he worked on Doppler-free spectroscopy of  Rubidium.0 In 2015 he joined the group of Prof. Stefan Willitsch at the  University of Basel for a PhD to work on implementation of a novel  travelling-wave Zeeman decelerator. He graduated from PhD in 2020 with a  thesis title: “A novel travelling-wave Zeeman decelerator for  production of cold radicals”. Currently, he is a postdoctoral researcher  in the group of Prof. Stefan Willitsch where he continues to work on  the travelling-wave Zeeman decelerator.

Abstract：

Recent  advances in producing samples of molecules at very low temperatures  have been motivated by the prospects of studying collisions and chemical  reactions with controllable collision energies, performing high  resolution spectroscopy and precision measurements for fundamental  physics, quantum information processing and quantum simulation. Methods  based on the deceleration of supersonic molecular beams are particularly  well suited for collision experiments since the final longitudinal  velocity of the sample can be tuned over a wide range with narrow  velocity spreads. Particularly well-suited experimental methods are  Stark and Zeeman deceleration methods. These methods rely on the  state-dependent interaction of neutral atoms or molecules with a  time-dependent inhomogeneous electric and magnetic fields. For this  reason, Stark deceleration methods are effective in producing samples of  polar and Rydberg molecules with low kinetic energies, while the Zeeman  deceleration is especially effective in open-shell systems such as  molecular radicals or metastable atoms and molecules. In this lecture I  will give a brief introduction to Stark and Zeeman deceleration and  present recent results from our lab.