Probing Macroscopic Realism via Ramsey Correlation Measurements

A. Asadian, C. Brukner, and P. Rabl
Phys. Rev. Lett. 112, 190402 – Published 13 May 2014
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Abstract

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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  • Received 15 October 2013

DOI:https://doi.org/10.1103/PhysRevLett.112.190402

© 2014 American Physical Society

Authors & Affiliations

A. Asadian1, C. Brukner2,3, and P. Rabl1

  • 1Institute of Atomic and Subatomic Physics, TU Wien, Stadionallee 2, 1020 Wien, Austria
  • 2Faculty of Physics, University of Vienna, Boltzmanngasse 5, 1090 Vienna, Austria
  • 3Institute for Quantum Optics and Quantum Information, Austrian Academy of Sciences, Boltzmanngasse 3, 1090 Vienna, Austria

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Issue

Vol. 112, Iss. 19 — 16 May 2014

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