Hydrogen Optical Lattice Clock

by Dr. Omer Amit

Max-Planck Garching

at Quantum optics seminar

Wed, 10 Jan 2024, 16:00
Zoom Only

Abstract

Zoom link: https://us02web.zoom.us/j/81729421423?pwd=dUNzcVRtbFVjQVlFajkwdHdzaTJRUT09

Abstract:
Defining the values of constants is the best method to define units since it separates the definition from the realization.
For example, there are two very different methods to realize the kg.

In the future, there can be other methods of realizing the kg that adapt to possible advancements
in technology without changing the definition. With the reform of the SI system, all but one of
the units are now based on defined constants. The only remaining (natural) object is the cesium
atom that is used to define and realize the SI second. A hydrogen lattice clock would allow us to
complete the process and remove the last object from the SI system.

We propose a trap for atomic hydrogen that is not more complex than a usual optical atomic
clock. It is based on a magic wavelength optical dipole trap, similar to the current most accurate
optical clocks. The trap can be loaded without Doppler cooling which avoids an extremely difficult
121 nm laser. The 1S-2S transition with a natural linewidth of 1.3 Hz would be the clock transition
driven in a Doppler-free manner. Hence, only moderate temperature and no Doppler cooling are
required. Our compact setup could be operated as a computable optical clock to redefine the
SI-second as well as to improve spectroscopic data to test Quantum Electrodynamics.

Created on 07-01-2024 by Folman, Ron (folman)
Updaded on 07-01-2024 by Folman, Ron (folman)