Vogt Thibault, Gross Christian, Gallagher T F, Li Wenhui
Opt Lett. 2018 Apr 15;43(8):1822-1825. doi: 10.1364/OL.43.001822.
We demonstrate electromagnetically induced transparency (EIT) in a four-level cascade-like system, where the two upper levels are Rydberg states coupled by a microwave field. A two-photon transition consisting of an off-resonant microwave field and an off-resonant optical field forms an effective coupling field to induce transparency of the probe light. We characterize the Rabi frequency of the effective coupling field, as well as the EIT microwave spectra. The results show that microwave-assisted EIT allows us to efficiently access Rydberg states with relatively high orbital angular momentum ℓ=3, which is promising for the study of exotic Rydberg molecular states.
我们在一个四能级级联系统中展示了电磁诱导透明（EIT），其中两个较高能级是由微波场耦合的里德堡态。由一个非共振微波场和一个非共振光场组成的双光子跃迁形成一个有效的耦合场，以诱导探测光的透明。我们表征了有效耦合场的拉比频率以及EIT微波光谱。结果表明，微波辅助的EIT使我们能够有效地访问具有相对较高轨道角动量ℓ = 3的里德堡态，这对于研究奇异的里德堡分子态很有前景。
