title: Quantum many-body culling: production of a definite number of ground-state atoms in a bose-einstein condensate.
abstract: We propose a method to produce a definite number of ground-state atoms by adiabatic reduction of the depth of a potential well that confines a degenerate Bose gas with repulsive interactions. Using a variety of methods, we map out the maximum number of particles that can be supported by the well as a function of the well depth and interaction strength, covering the limiting case of a Tonks gas as well as the mean-field regime. We also estimate the time scales for adiabaticity and discuss the recent observation of atomic number squeezing [Chuu, Phys. Rev. Lett. 95, 260403 (2005)10.1103/PhysRevLett.95.260403].
authors.affiliation: Max-Planck-Institut für Physik komplexer Systeme, Nöthnitzer Str. 38, 01187 Dresden, Germany.
authors.forename: A M
authors.initials: AM
authors.lastname: Dudarev
authors.forename: M G
authors.initials: MG
authors.lastname: Raizen
authors.forename: Qian
authors.initials: Q
authors.lastname: Niu