Spin-Controlled Quantum Interference of Levitated Nanorotors

We describe how to prepare an electrically levitated nanodiamond in a superposition of orientations via microwave driving of a single embedded nitrogen-vacancy (NV) center. Suitably aligning the magnetic field with the NV center can serve to reach the regime of ultrastrong coupling between the NV an...

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Bibliographic Details
Published in:Physical review letters 2022-08, Vol.129 (9), p.093605-093605, Article 093605
Main Authors: Rusconi, Cosimo C., Perdriat, Maxime, Hétet, Gabriel, Romero-Isart, Oriol, Stickler, Benjamin A.
Format: Article
Language:English
Subjects:
Condensed Matter
Physics
Quantum Physics
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Summary:We describe how to prepare an electrically levitated nanodiamond in a superposition of orientations via microwave driving of a single embedded nitrogen-vacancy (NV) center. Suitably aligning the magnetic field with the NV center can serve to reach the regime of ultrastrong coupling between the NV and the diamond rotation, enabling single-spin control of the particle’s three-dimensional orientation. We derive the effective spin-oscillator Hamiltonian for small amplitude rotation about the equilibrium configuration and develop a protocol to create and observe quantum superpositions of the particle orientation. We discuss the impact of decoherence and argue that our proposal can be realistically implemented with near-future technology.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.129.093605