Ultrastable Optical Clock with Neutral Atoms in an Engineered Light Shift Trap

[DR.STROKOV]

Does someone can explain that?

The transition frequency v of atoms exposed to the
lattice electric field of E is described as,

hv = hv^(0)-(1/4) alpha(e,w)E^2-(1/64) gama(e,w)E^4

where v^(0) is the transition frequency between the unperturbed atomic states, alpha(e,w) and gama(e,w) are the difference between the ac polarizabilities and hyperpolarizabilities of the upper and lower states, which in the general case depends both on the light wave frequency w and on the unit polarization vector e.

 

[Aaron Barnard]

This formula describes how an electric field affects the transition frequency of atomic states. More specifically, it states that when an atom is exposed to a lattice electric field E, the transition frequency v of the atom will be reduced by an amount hv^(0) minus a fraction of the product of alpha(e,w) and E^2, and a fraction of the product of gama(e,w) and E^4. The fractions depend on the light wave frequency w and the unit polarization vector e.

 

[Graeme Robinson]

This paper discusses the development of an ultrastable optical clock using neutral atoms in an engineered light shift trap. The clock is based on the precise measurement of the transition frequency of the atoms, which is affected by the surrounding electric field. The authors provide a theoretical model to describe the transition frequency in the presence of the electric field, taking into account the ac polarizabilities and hyperpolarizabilities of the atomic states.

The engineered light shift trap refers to the specific arrangement of lasers and magnetic fields used to trap and manipulate the atoms. This trap allows for a more stable and controlled environment for the atoms, which is crucial for achieving high precision in the clock.

Overall, this paper presents a novel and promising approach for building an ultrastable optical clock, which has potential applications in precision measurement and fundamental physics research. Further explanation of the theoretical model and experimental setup used in this study would provide a better understanding of the concept.