分子科学研究所

Site Search

About IMS

Research

Graduate University

Life@Okazaki

Access   Researchers List   Publication
Contact
Japanese

Research

Seminar & Events

IMS Researchers

HOME - Research - Seminar & Events - Detail
Research

Seminar & Events Detail

The 972nd IMS colloquium

Lecture Title Optical cycling of arenes for single-molecule quantum state preparation and readout
Date Thursday 21 September 2023 16:00 to 17:30
Lecturer Prof. Wesley C. Campbell (University of California, Los Angeles)
Place

Hybrid format (IMS Research Building Room 201 and Zoom)
*Zoom registration:

 https://registration.ims.ac.jp/IMS_colloquium972/en/form/colloquium972
(Internal participants are encouraged to attend in person.)
Summary

An optical cycling transition in a molecule is an electronic transition in which the upper state preferentially decays back to the original rovibrational state (or states) from which it was excited upon spontaneous emission.  Because the laser-induced fluorescence can be repeated many times with a nearly deterministic final internal state, these transitions are useful for laser-driven applications such as Doppler cooling and quantum state preparation and detection of qubits.  I will discuss recent progress toward endowing molecules as large as polycyclic arenes with optical cycling centers.  Thinking ahead, it is worthwhile to consider and how this progress may continue even when the species involved are so large that rotational lines are no longer optically resolved.  This leads to a direct rotational analogue of laser cooling of atomic translation, and connections between the two can provide insight about each.
"Functionalizing aromatic compounds with optical cycling centers" Guo-Zhu Zhu, et al. Nature Chemistry 14, 995 (2022)
"Photon spin molasses for laser cooling molecular rotation" W. C. Campbell and B. L. Augenbraun. J. Mol. Spectrosc. 385, 111596 (2022)
"Franck-Condon tuning of optical cycling centers by organic functionalization," Claire E. Dickerson, et al. Phys. Rev. Lett. 126, 123002 (2021)
Contact

Kenji Ohmori (Department of Photo-Molecular Science)
Hikaru Kuramochi & Yasutomo Segawa （IMS colloquium FY2023 committee）
Awards & Honors International collaboration

Links

英_TILAコンソーシアム