Spin-Controlled Quantum Interference of Levitated Nanorotors

• URL: http://arxiv.org/abs/2203.11717v2
• Date: Mon, 29 Aug 2022 16:39:39 GMT
• Title: Spin-Controlled Quantum Interference of Levitated Nanorotors
• Authors: Cosimo C. Rusconi, Maxime Perdriat, Gabriel H\'etet, Oriol Romero-Isart, Benjamin A. Stickler
• Abstract summary: We describe how to prepare an electrically levitated nanodiamond in a superposition of orientations via microwave driving of a single embedded nitrogen-vacancy center. 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.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: 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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