My group uses atoms and molecules to look for cracks in the structure of physical laws. Our projects involve

• using discrete symmetry violation to probe physics beyond the Standard Model
• testing quantum electrodynamics using hydrogen
• building new kinds of atomic clocks

Recent work

1. Nuclear T-violation search using octupole-deformed nuclei in a crystal Phys. Rev. A (2023)
2. Optical control of BaF molecules trapped in neon ice New J. Phys. (2023)

Selected older publications

1. A measurement of the atomic hydrogen Lamb shift and the proton charge radius, Science (2019)
2. Magic polarization for light shift cancellation in two-photon optical clocks, Phys. Rev. A (2019)
3. Improved estimate of the collisional frequency shift in Al+ clocks, Phys. Rev. Research (2019)
4. Optical frequency standards for gravitational wave detection using satellite Doppler velocimetry, New. J. Phys. (2015)
5. Order of magnitude smaller limit on the electric dipole moment of the electron, Science (2014)

Theses

• H Ramachandran, A nuclear T -violation search using octupole-deformed nuclei in a crystal (2023)
• S Jackson, Toward a compact two-photon optical clock based on calcium (2023)
• N Bhatt, Isotope shift spectroscopy of ions in cryogenically cooled neutral plasmas (2020)

Designs

Code and hardware designs developed in my group are available at github.com/vuthalab.

Diversions

Perhaps you are here for my list of content-free phrases?

Contact

MP 033 (lab), MP 1121 (office)
Department of Physics
University of Toronto
60 St. George Street
Toronto ON M5S 1A7, Canada

Phone: +1 416 946 8503
Email: amar.vutha Ͽ utoronto.ca

'MP' is the McLennan Physics building in the downtown campus.

Support

• Natural Sciences & Engineering Research Council
• Canada Research Chairs
• National Research Council

Team

• Kristen Cote
• Takahiro Tow
• Dr. Scott Smale
• Ben Dobozy
• Daniel Stedman
• Angela Xiang
• Parveer Banwait
• Dr. Mingyu Fan
• Alison Okumura

Alumni

• Harish Ramachandran → Caltech
• Julia Ford → Toronto
• Shira Jackson, PhD
• Samuel Li → Princeton
• Dr. Rhys Anderson → Google
• Reynold Chan → U Illinois
• Dr. Kosuke Kato → National Research Council
• Nishant Bhatt, PhD → ALPHA Collaboration
• Mohit Verma → U Chicago
• Jinsoo Park → Queens U
• Luca Talamo → U Colorado
• Jack Davis → U Waterloo
• Hiromitsu Sawaoka → Harvard
• Wesley Cassidy → U British Columbia
• Dr. Shreyas Potnis → Google
• Dr. Graham Edge → JW Player
• Jenny Wu → U Colorado