The dipole-blockaded sodiumclock transition has been detected by high resolution microwave spectroscopy, the multiple-pulse spectroscopy. This spectroscopic technique has been first used to detect the density broadening and shifting in a Sodium Bose Einstein Condensate (BEC) by probing the sodium clock-transition. Moreover, by narrowing the pulse-width of the pulses, some of the broadening mechanisms can be partially reduced. The results reported here are essential steps toward the ground-statequantum computing, few-body spectroscopy, spin squeezing and quantum metrology.
Han, Jianing. "The density broadening in a sodium F=2 condensate detected by a pulse train." AIP Advances, 1, 032106 (2011). Hollins Digital Commons. Web. DOI:http://dx.doi.org/10.1063/1.3621721.