Sub-Poissonian fluctuations in a 1D Bose gas: from the quantum quasi-condensate to the strongly interacting regime

Autor:	Jacqmin, Thibaut, Armijo, Julien, Berrada, Tarik, Kheruntsyan, Karen, Bouchoule, Isabelle
Rok vydání:	2011
Předmět:	Condensed Matter - Quantum Gases Physics - Atomic Physics
Zdroj:	Physical Review Letters 106 (2011) 230405
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.106.230405
Popis:	We report on local measurements of atom number fluctuations in slices of a single 1D Bose gas with repulsive interactions. For weakly interacting gases, the fluctuations are super-Poissonian at intermediate atomic densities and become sub-Poissonian at high densities once the gas enters into the quantum quasi-condensate regime. At stronger interactions, when approaching the fermionization regime, we no longer observe super-Poissonian statistics; the fluctuations go from Poissonian to sub-Poissonian as the density is increased, as those in a Fermi gas.
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1103.3028 Zobrazit plný text záznamu View this record from Arxiv