4.8 Article

Laser Cooled YbF Molecules for Measuring the Electron's Electric Dipole Moment

Journal

PHYSICAL REVIEW LETTERS
Volume 120, Issue 12, Pages -

Publisher

AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.120.123201

Keywords

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Funding

  1. STFC [ST/N000242/1]
  2. EPSRC [EP/M027716/1, EP/P01058X/1]
  3. European Research Council under the European Union's Seventh Framework Programme (FP7)/ERC [320789]
  4. EPSRC [EP/P01058X/1, EP/H031103/1, EP/M027716/1, EP/J011401/1] Funding Source: UKRI
  5. STFC [ST/H000968/1, ST/S000011/1, ST/N000242/1] Funding Source: UKRI
  6. European Research Council (ERC) [320789] Funding Source: European Research Council (ERC)

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We demonstrate one-dimensional sub-Doppler laser cooling of a beam of YbF molecules to 100 mu K. This is a key step towards a measurement of the electron's electric dipole moment using ultracold molecules. We compare the effectiveness of magnetically assisted and polarization-gradient sub-Doppler cooling mechanisms. We model the experiment and find good agreement with our data.

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