On probing quantum gravity's minimal length scale in a laboratory setting

The notion that space may possess a fundamental discreteness—often called the "minimal length of nature"—has long motivated phenomenological models that modify quantum mechanics at low energies, possibly reflecting aspects of an underlying quantum gravity theory. In this talk, I will briefly review the historical development of such models and focus on those that alter the canonical commutation relations through generalized commutators. The central goal is to identify feasible experimental signatures of these modifications using present or near-future technology. I will argue that time-resolved measurements of macromolecular wavepacket dispersion, enabled by cutting-edge atomic clocks, provide a promising route to test these proposals and potentially reveal indirect evidence of quantum gravitational effects.