We are building an experiment to search for the electron's electric dipole moment in laser-cooled and trapped polyatomic molecules.  These molecules offer robust systematic error rejection via internal co-magnetometer states, and provide a route to explore PeV-scale CP-violating physics.

“Polyatomic molecules give us life and reasons to live”
      Peter van der Straten and Hal Metcalf
      Atoms and Molecules Interacting with Light

Support and Funding

4 May 2023

Paper describing the design of a "Nonresonant cavity for multipass laser intensity buildup" was published in Applied Optics.

27 April 2023

Paper on "Optical cycling in polyatomic molecules with complex hyperfine structure" posted to the arXiv.

26 April 2023

Paper on "Engineering field-insensitive molecular clock transitions for symmetry violation searches" posted to the arXiv.

14 April 2023

Paper on optical trapping of CaOH in bending mode published in Phys. Rev. Lett.

6 March 2023

Paper on molecular repump spectroscopy submitted to the arXiv.

15 February 2023

YbOH Zeeman-Sisyphus deceleration paper published in Phys. Rev. A

22 January 2023

Paper on quantum control in trapped polyatomic molecules for eEDM searches posted to arXiv.

11 January 2023

Paper on characterizing the YbOH bending mode submitted to the arXiv.

19 October 2022

YbOH Zeeman-Sisyphus deceleration paper posted to the arXiv.

29 August 2022

Optical trapping of CaOH in bending mode posted to the arXiv.

3 August 2022

SrOH branching ratio published in Phys. Rev. A.

23 May 2022

SrOH branching ratio posted on the arXiv.

20 December 2021

Paper on Zeeman-Sisyphus Deceleration of Molecular Beams published in Physical Review Letters.

7 September 2021

Paper on Zeeman-Sisyphus Deceleration of Molecular Beams posted on the arXiv.

3 September 2021

Vibronic branching theory + experiment paper published in The Journal of Chemical Physics.

29 June 2021
Fine and hyperfine interactions in 171YbOH and 173YbOH paper published in the Journal of Chemical Physics.

22 May 2021

Vibronic branching theory + experiment paper posted on the arXiv.

12 February 2021

Paper on the laser spectroscopy of ytterbium monomethoxide (YbOCH3) published in Phys. Rev. A

11 February 2021

YbOH axionlike particle sensitivity paper published in Phys. Rev. A

2 December 2020

Paper on the laser spectroscopy of ytterbium monomethoxide (YbOCH3) posted on the arXiv

4 May 2020

Our recent results were featured in Physics World.

31 March 2020

Branching ratio paper published in special issue of Journal Of Chemical Physics A

26 Feb 2020

Learn more about the motivation for some of our research in this Minute Physics video about the missing anti-matter in the universe. 

19 Feb 2020

Chemical enhancement and laser cooling papers published in New Journal of Physics.

14 Feb 2020

YbOH branching ratio paper put on the arXiv.

1 Feb 2020

Thank you to the Gordon and Betty Moore Foundation and the Alfred P. Sloan Foundation for funding our research!

22 November 2019

Field-free, Stark, and Zeeman spectroscopy of YbOH published in PRA.

25 October 2019

YbOH arXiv paper double feature!

19 April 2019

YbOH effective internal field paper published in PRA.

10 Jan 2019

Theoretical calculation of electron EDM sensitivity in YbOH and BaOH posted to arXiv.

20 November 2018

YbOH rotational spectrum published in Chemical Physics Letters.

7 October 2018

We put a paper on the arXiv describing some measurements of the rotational structure of the YbOH ground state.  These measurements were performed at ASU using a supersonic beam of YbOH.

23 July 2018

Website goes live!