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EDM measurement apparatus

A lattice-bound sample of cold atoms offers significant advantages for making precision measurements. Atoms can be trapped by light for tens of seconds without spontaneously scattering photons, allowing for extremely good frequency resolution. Furthermore, the perturbation due to the trap and to other atoms can be made minimal. We are currently constructing an apparatus to search for the electron electric dipole moment using ultra-cold, trapped Cs and Rb atoms. The projected statistical precision of this measurement is less than 5x10-30 e-cm, a factor of 200 times below the current measured limit. This experiment may discover fundamental physics beyond the Standard Model.

Publications

2003 · 2009 · 2011 · 2012 · 2013 · All
K. Zhu, N. Solmeyer, C. Tang and D. S. Weiss, "Absolute Polarization Measurement Using a Vector Light Shift," Phys. Rev. Lett. 111, 243006 (2013)
K. Zhu, N. Solmeyer and D. S. Weiss, "A low noise, nonmagnetic fluorescence detector for precision measurements,," Rev. Sci. Instrum. 83, 113105 (2012)
N. Solmeyer, K. Zhu and D. S. Weiss, "Mounting ultra-high vacuum windows with low stress-induced birefringence," Rev. Sci. Instrum. 82, 066105 (2011)
F. Fang and D. S. Weiss, "Resonator-enhanced optical guiding and trapping of Cs atoms," Opt. Lett. 34, 169 – 171 (2009)
D. S. Weiss, F. Fang and J. Chen, "Measuring the electric dipole moment of Cs and Rb in an optical lattice," Bull. Am. Phys. Soc. APR03, J1.008 (2003)

Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.

D. S. Weiss : Electron electric dipole moment search