Observation of photoassociation spectroscopy of 23Na spinor Bose–Einstein condensate
We report the high-resolution photoassociation (PA) spectroscopy of 23Na excited from the spin-1 Bose–Einstein Condensate (BEC) to the molecular state of 0g−(P3/2)v = 4 and 1g(P3/2)v = 91. By comparing the PA spectra of different spin configurations, we experimentally studied the effect of spin on the PA spectra. The experimental spectra comply well with the theoretical consideration. The results will play an important role in the study of the spin interaction and control of the antiferromagnetism in Na.