Atomic parity violation in 0-to-0 two-photon transitions

TL;DR

This paper proposes a novel method to measure atomic parity violation without external fields by analyzing interference in two-photon transitions, with a case study on ytterbium.

Contribution

It introduces a new approach for detecting atomic parity violation through interference of transition amplitudes in zero angular momentum states.

Findings

Derived general expressions for two-photon transition amplitudes.

Estimated signal-to-noise ratio for ytterbium transition.

Proposed a field-free measurement technique for atomic parity violation.

Abstract

We present a method for measuring atomic parity violation in the absence of static external electric and magnetic fields. Such measurements can be achieved by observing the interference of parity conserving and parity violating two-photon transition amplitudes between energy eigenstates of zero electronic angular momentum. General expressions for induced two-photon transition amplitudes are derived. The signal-to-noise ratio of a two-photon scheme using the 6s^2 1S0 to 6s6p 3P0 transition in ytterbium is estimated.