Towards a test of quantum gravity with a levitated nanodiamond containing a spin

Abstract

There is significant interest in potential experimental tests of macroscopic quantum effects, both to test potential modifications to quantum theory and to probe the quantum nature of gravity. A proposed platform with which to generate the required macroscopic quantum spatial superposition is a nanodiamond containing a negatively charged nitrogen vacancy (${\text{NV}}^{-}$) centre. In this review, methods to fabricate nanodiamonds containing ${\text{NV}}^{-}$ suitable for these quantum applications are discussed. The proposed probes of the macroscopic limits of quantum theory are presented along with the spin physics of the ${\text{NV}}^{-}$ centre relevant to those tests.

12 pages, 2 figures

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• A Spin Entanglement Witness for Quantum Gravity
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Cited by in corpus (1)

• Tabletop Experiments for Quantum Gravity Are Also Tests of the Interpretation of Quantum Mechanics