Probing Macroscopic Realism via Ramsey Correlation Measurements

Author(s): A. Asadian, Č. Brukner, P. Rabl

Journal: Physical Review Letters

Volume: 112

Page(s): 190402

Year: 2014

DOI Number: 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.


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