Analysis of the atom-number correlation function in a few-atom trap
  Stochastic properties of loading and loss mechanism in a few atom trap are analyzed. An approximate formula is derived for the atom-number correlation function for the trapped atoms in the limit of reasonably small two-atom loss rate. Validity of the approximate formula is confirmed by numerical simulations. 
Youngwoon Choi, Seokchan Yoon, Sungsam Kang, Woongnae Kim, Jai-Hyung   Lee, and Kyungwon An