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Spin-Controlled Quantum Interference of Levitated Nanorotors

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arxiv 2203.11717 v2 pith:Y4GESXRH submitted 2022-03-22 quant-ph cond-mat.mes-hall

Cosimo C. Rusconi , Maxime Perdriat , Gabriel Hétet , Oriol Romero-Isart , Benjamin A. Stickler This is my paper · ORCID
classification quant-phcond-mat.mes-hall
keywords centerlevitatedorientationparticlequantumrotationaligningamplitude
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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.

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Cited by 1 Pith paper

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  1. Rotational stability in nanorotor and spin contrast in one-loop interferometry in the Stern-Gerlach setup

    quant-ph 2024-12 conditional novelty 5.0 of 10

    Spinning a cylindrical nanorotor along the magnetic field stabilizes its libration mode and suppresses spin-contrast loss in one-loop Stern-Gerlach interferometry, extending prior work from spheres to cylinders.

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