Jo G-B, Choi J-H, Christensen C A, Pasquini T A, Lee Y-R, Ketterle W, Pritchard D E
MIT-Harvard Center for Ultracold Atoms, Research Laboratory of Electronics, Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA.
Phys Rev Lett. 2007 May 4;98(18):180401. doi: 10.1103/PhysRevLett.98.180401. Epub 2007 Apr 30.
The recombination of two split Bose-Einstein condensates on an atom chip is shown to result in heating which depends on the relative phase of the two condensates. This heating reduces the number of condensate atoms between 10% and 40% and provides a robust way to read out the phase of an atom interferometer without the need for ballistic expansion. The heating may be caused by the dissipation of dark solitons created during the merging of the condensates.
在原子芯片上，两个分离的玻色 - 爱因斯坦凝聚体的重组被证明会导致加热，这种加热取决于两个凝聚体的相对相位。这种加热会使凝聚体原子数量减少10%至40%，并提供了一种无需弹道膨胀就能读出原子干涉仪相位的可靠方法。加热可能是由凝聚体合并过程中产生的暗孤子的耗散引起的。
