A passively pumped vacuum package sustaining cold atoms for more than 200 days

  title={A passively pumped vacuum package sustaining cold atoms for more than 200 days},
  author={B J Little and Gregory W. Hoth and Justin E. Christensen and Chuck Walker and Dennis J. De Smet and Grant W. Biedermann and Jongmin Lee and Peter D. D. Schwindt},
Compact cold-atom sensors depend on vacuum technology. One of the major limitations to miniaturizing these sensors are the active pumps—typically ion pumps—required to sustain the low pressure needed for laser cooling. Although passively pumped chambers have been proposed as a solution to this problem, technical challenges have prevented successful operation at the levels needed for cold-atom experiments. We present the first demonstration of a vacuum package successfully independent of ion… 

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