处于大体积光学阱中F = 2态的钠玻色-爱因斯坦凝聚体。
Sodium Bose-Einstein condensates in the F = 2 state in a large-volume optical trap.
作者信息
Görlitz A, Gustavson T L, Leanhardt A E, Löw R, Chikkatur A P, Gupta S, Inouye S, Pritchard D E, Ketterle W
机构信息
Department of Physics, MIT-Harvard Center for Ultracold Atoms, and Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
出版信息
Phys Rev Lett. 2003 Mar 7;90(9):090401. doi: 10.1103/PhysRevLett.90.090401. Epub 2003 Mar 4.
We have investigated the properties of Bose-Einstein condensates of sodium atoms in the upper hyperfine ground state. Condensates in the high-field seeking [F=2, m(F)=-2> state were created in a large volume optical trap from initially prepared [F=1, m(F)=-1> condensates using a microwave transition at 1.77 GHz. We found condensates in the stretched state [F=2, m(F)=-2> to be stable for several seconds at densities in the range of 10(14) atoms/cm(3). In addition, we studied the clock transition [F=1, m(F)=0> --> [F=2, m(F)=0> in a sodium Bose-Einstein condensate and determined a density-dependent frequency shift of (2.44+/-0.25+/-0.5) x 10(-12) Hz cm(3).
我们研究了处于超精细基态的钠原子玻色-爱因斯坦凝聚体的性质。利用1.77GHz的微波跃迁，从初始制备的[F = 1, m(F) = -1]凝聚体在大体积光学阱中产生了处于高场寻找态[F = 2, m(F) = -2]的凝聚体。我们发现处于伸展态[F = 2, m(F) = -2]的凝聚体在密度为10(14) 个原子/立方厘米的范围内可稳定存在数秒。此外，我们研究了钠玻色-爱因斯坦凝聚体中的钟跃迁[F = 1, m(F) = 0] --> [F = 2, m(F) = 0]，并确定了密度依赖的频移为(2.44±0.25±0.5)×10(-12) Hz·cm(3) 。
Zotero 插件