Investigating the $4D_{3/2}|3,\pm 2⟩$--$4D_{5/2}|3,\pm 2⟩$ transition in Nb${}^{4+}$ for a THz atomic clock

Jyoti, A. Chakraborty, Zhiyang Wang +4

In this work, the $4D_{3/2}|3,\pm 2⟩\to 4D_{5/2}|3,\pm 2⟩$ transition in the Nb${}^{4+}$ ion is identified as a promising candidate for a terahertz (THz) atomic cl…