Quantum superposition of massive objects and collapse models

By Oriol Romero-Isart. 2011

235 citations recorded by the source corpus.

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.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/80c362b8a7f6c1e4d2fa5b41c2920c15d7f7a929

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In Artificial Intelligence

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Models of Wave-function Collapse, Underlying Theories, and Experimental Tests (2012, methodology): “Clearly there is a certain possibility that other experimental routes or variations and combinations of the two main proposals: OTIMA (Nimmrichter et al., 2011a) and MERID (Romero-Isart, 2011) are successful in observing a mesoscopic single particle superposition state.”
On-chip quantum interference of a superconducting microsphere (2016, methodology): “The localization parameter is given by Λbb = Λbb + Λbb + Λbb, where [8, 27, 33, 34]”
Macroscopic quantum states: Measures, fragility, and implementations (2017, background): “In Bose et al. (1999), Romero-Isart (2011), Nimmrichter et al. (2011) and Diósi (2015) for example, the requirements to test different collapse models using superpositions of massive objects are investigated using quantum optomechanical systems, levitating nanospheres, matter-wave interferometry…”