Testing macroscopic realism through high-mass interferometry

Author(s): C. Emary, J. P. Cotter, M. Arndt

Journal: Phys. Rev. A

Volume: 90

Page(s): 042114

Year: 2014

DOI Number: http://dx.doi.org/10.1103/PhysRevA.90.042114

Link: Link to publication


We define a quantum witness for high-mass matter-wave interferometers that allows us to test fundamental assumptions of macroscopic realism. We propose an experimental realization using absorptive laser gratings and show that such systems can strongly violate a macrorealistic quantum-witness equality. The measurement of the witness can therefore provide clear evidence of physics beyond macrorealism for macromolecules and nanoparticles.

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