Quantum metrology to probe atomic parity violation

TL;DR

This paper proposes a quantum metrology experiment using entangled states in decoherence-free subspaces with Ramsey measurements to detect atomic parity violation in heavy alkali ions like Ba+.

Contribution

It introduces a novel quantum metrology scheme employing entangled states and Ramsey measurements to enhance detection of atomic parity violation.

Findings

Proposed an experimental setup with Ba+ ions for parity violation measurement.

Demonstrated potential sensitivity improvements over classical methods.

Provided a theoretical framework for using decoherence-free subspaces in this context.

Abstract

An entangled state prepared in the decoherence free sub-space together with a Ramsey type measurement can probe parity violation in heavy alkali ions like Ba+ or Ra+. Here we propose an experiment with Ba+ ions as an example to measure the small parity violating effect in this system.