Prospective of Zr$^{3+}$ ion as a THz atomic clock

Jyoti; A. Chakraborty; Yan-mei Yu; Jingbiao Chen; Bindiya Arora; B. K. Sahoo

paper

Prospective of Zr $^{3 +}$ ion as a THz atomic clock

arXiv:2309.16900

Abstract

We demonstrate transition between the fine structure splitting of the ground state of triply ionized zirconium (Zr IV) is suitable for a terahertz (THz) atomic clock. Its transition frequency is about 37.52 THz and is mainly guided by the magnetic dipole (M1) transition and can be accessible by a readily available laser. We suggest to consider stable even isotopes of Zr and $M_{J} = \pm 1/2$ sublevels (i.e. $∣4 D_{3/2}, M_{J} = \pm 1/2 ⟩ \to ∣4 D_{5/2}, M_{J} = \pm 1/2 ⟩$ clock transition) for the experimental advantage. By performing necessary calculations, we have estimated possible systematics due to blackbody radiation, ac Stark, electric quadrupole and second-order Zeeman shifts along with shifts due to the second-order Doppler effects. The proposed THz atomic clock can be very useful in quantum thermometry and frequency metrology.

1 figure, 11 pages, accepted for publication in Physical Review A

Prospective of Zr3+ ion as a THz atomic clock

Abstract

Prospective of Zr $^{3 +}$ ion as a THz atomic clock