Probing Macroscopic Realism via Ramsey Correlation Measurements
Author(s): A. Asadian, Č. Brukner, P. Rabl
Journal: Phys. Rev. Lett
DOI Number: http://dx.doi.org/10.1103/PhysRevLett.112.190402
Link: Link to publication
We describe a new and experimentally feasible protocol for performing fundamental tests of quantum mechanics with massive objects. In our approach, a single two-level system is used to probe the motion of a nanomechanical resonator via multiple Ramsey interference measurements. This scheme enables the measurement of modular variables of macroscopic continuous-variable systems; we show that correlations thereof violate a Leggett-Garg inequality and can be applied for tests of quantum contextuality. Our method can be implemented with a variety of different solid-state or photonic qubit-resonator systems, and it provides a clear experimental signature to distinguish the predictions of quantum mechanics from those of other alternative theories at a macroscopic scale.