DOI

  • Wenliang Liu
  • Ningxuan Zheng
  • Jun Jian
  • Li Tian
  • Jizhou Wu
  • Yuqing Li
  • Yongming Fu
  • Peng Li
  • Vladimir Sovkov
  • Jie Ma
  • Liantuan Xiao
  • Suotang Jia
Bose–Einstein condensates (BEC) of sodium atoms are transferred into one-dimensional (1D) optical lattice potentials, formed by two laser beams with a wavelength of 1064 nm, in a shallow optical trap. The phase coherence of the condensate in the lattice potential is studied by changing the lattice depth. A qualitative change in behavior of the BEC is observed at a lattice depth of ∼ 13.7 E r, where the quantum gas undergoes a transition from a superfluid state to a state that lacks well-to-well phase coherence.
Original languageEnglish
Article number073702
Number of pages4
JournalChinese Physics B
Volume31
Issue number7
DOIs
StatePublished - 1 Jul 2022

    Research areas

  • Bose-Einstein condensate, Mott-insulator phase, optical lattice, superfluid

    Scopus subject areas

  • Physics and Astronomy(all)

ID: 96900505