Probing macroscopic realism via Ramsey correlation measurements

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 t...

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Bibliographic Details
Published in:Physical review letters 2014-05, Vol.112 (19), p.190402-190402, Article 190402
Main Authors: Asadian, A, Brukner, C, Rabl, P
Format: Article
Language:English
Subjects:
Correlation analysis
Inequalities
Interference
Modular
Nanostructure
Quantum mechanics
Resonators
Signatures
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Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.112.190402