Optical atomic clocks with suppressed black body radiation shift

TL;DR

This paper identifies and analyzes neutral atoms and ions suitable for ultra-precise optical clocks with minimized black body radiation shifts, enhancing clock accuracy by exploiting polarizability cancellations.

Contribution

It provides theoretical calculations demonstrating polarizability cancellation in various atomic systems, advancing the development of more accurate optical atomic clocks.

Findings

Scalar polarizabilities cancel in selected systems, reducing black body radiation shifts.

Calculated frequencies and quadrupole moments support clock stability.

Results suggest new candidates for ultra-precise optical clocks.

Abstract

We study a wide range of neutral atoms and ions suitable for ultra-precise atomic optical clocks with naturally suppressed black body radiation shift of clock transition frequency. Calculations show that scalar polarizabilities of clock states cancel each other for at least one order of magnitude for considered systems. Results for calculations of frequencies, quadrupole moments of the states, clock transition amplitudes and natural widths of upper clock states are presented.