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KITP Program: Thorium-229 Nuclear Clocks
(Apr 27 - May 8, 2026)
Coordinators: Steven Girvin, Eric Hudson, Leo Radzihovsky, Marianna Safronova, Thorsten Schumm, and Jun Ye

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Monday, May 4

10:00am Thorium-229 Nuclear Clocks Simons Amphitheater
Leo Radzihovsky (CU Boulder)
Introductions, goals and formats, meet and greet
1:00pm Thorium-229 Nuclear Clocks Simons Amphitheater
Andrei Derevianko (Nevada)
Nuclear Clock Theory
3:30pm Thorium-229 Nuclear Clocks Simons Amphitheater
Emil Pellett (CU Boulder)
CaF2 simulations
Tan Hoang Bao Tran (LANL)
Nuclear-electronic coupling and DFT Discussions

Tuesday, May 5

1:00pm Thorium-229 Nuclear Clocks Simons Amphitheater
Gilad Perez (Weizmann Inst.)
Beyond SM Physics
3:30pm Thorium-229 Nuclear Clocks Simons Amphitheater
Kathryn Zurek (LBNL)
Fundamental Questions
Jason Arakawa (Delaware)
Dark Matter Search and Discussion

Wednesday, May 6

1:00pm Thorium-229 Nuclear Clocks Simons Amphitheater
Jun Ye (CU Boulder)
AMO Table Top Physics
3:30pm Thorium-229 Nuclear Clocks Simons Amphitheater
Jack Harris (Yale)
Solid noble gases for hosting Th ions and building optical cavities at 148 nm
Steven Girvin (Yale)
Condensed Matter and Clocks and Discussion

Thursday, May 7

1:00pm Thorium-229 Nuclear Clocks Simons Amphitheater
David De Mille (Johns Hopkins)
AMO-fundamental Symmetries
3:30pm Thorium-229 Nuclear Clocks Simons Amphitheater
Ken Van Tilburg (Stanford)
Dark Matter Theory
Abhishek Banerjee (Maryland)
Dark Matter Theory and Discussion

Friday, May 8

10:00am Thorium-229 Nuclear Clocks Simons Amphitheater
Lars Von Der Wense (Univ. of Mainz)
Thorium Nuclear Clock
2:00pm Thorium-229 Nuclear Clocks Simons Amphitheater
Xing Wu (MSU)
Table Top Fundamental Symmetries
Jaideep Singh (MSU)
Fundamental Physics and Discussion
3:30pm Thorium-229 Nuclear Clocks Simons Amphitheater
Steven Girvin (Yale)
Eric Hudson (UCLA)
Leo Radzihovsky (CU Boulder)
Marianna Safronova (Delaware)
Thorsten Schumm (TU Wien)
Jun Ye (CU Boulder)
Closing Remarks and Further Discussion