Quantum Superposition of Massive Objects and Collapse Models

Details Quantum Superposition of Massive Objects and Collapse Models Quantum Superposition of Massive Objects and Collapse Models

2011-10-20

arxiv.org/abs/1110.4495v1

Phys. Rev. A 84, 052121 (2011)

Physics

Quantum Physics

19 pages, 17 figures

Scientific paper

10.1103/PhysRevA.84.052121

We analyze the requirements to test some of the most paradigmatic collapse models with a protocol that prepares quantum superpositions of massive objects. This consists of coherently expanding the wave function of a ground-state-cooled mechanical resonator, performing a squared position measurement that acts as a double slit, and observing interference after further evolution. The analysis is performed in a general framework and takes into account only unavoidable sources of decoherence: blackbody radiation and scattering of environmental particles. We also discuss the limitations imposed by the experimental implementation of this protocol using cavity quantum optomechanics with levitating dielectric nanospheres.

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