Tests of Quantum Gravity-Induced Non-Locality via Opto-mechanical Experiments

Understand

The nonrelativistic limit of nonlocal modifications to the Klein Gordon operator is studied, and the experimental possibilities of casting stringent constraints on the nonlocality scale via planned and/or current optomechanical experiments are discussed.

• Details of the perturbative analysis and semianalitical simulations leading to the dynamical evolution of a quantum harmonic oscillator in the presence of non locality reported in [1], together with a comprehensive account of the experimental methodology with particular regard to sensitivity limitations related to thermal decoherence time and active cooling of the oscillator, are given.
• Finally, a strategy for detecting non-locality scales of the order of $10^{- 22} \div 10^{- 26}$ m by means of the spontaneous time periodic squeezing of quantum coherent states is provided.