A proposed test of quantum mechanics with three connected atomic clock transitions

TL;DR

This paper explores a new experimental test of quantum mechanics using three connected atomic clock transitions within the same atom, aiming to detect potential deviations predicted by extended theories.

Contribution

It proposes realistic experimental setups to test Weinberg's extensions of quantum mechanics using atomic clocks, including systems that can reach the sensitivity limits of current technology.

Findings

Existing systems set limits on deviations from quantum mechanics.

Proposed systems can test new physics at the sensitivity of the best atomic clocks.

Potential to discover deviations predicted by alternative quantum theories.

Abstract

We consider possible extensions to quantum mechanics proposed by Steven Weinberg, and re-analyze his prediction of a new test based upon three atomic clocks in the same atom. We propose realistic experimental systems where this hypothesis can be tested. Two systems already set limits on deviations from quantum mechanics, while with another system, one would be able to search for new physics at the limit of sensitivity of the best atomic clocks.