Spin-Controlled Quantum Interference of Levitated Nanorotors

Mar 22, 2022
12 pages
Published in:
  • Phys.Rev.Lett. 129 (2022) 9, 093605
  • Published: Aug 25, 2022
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Abstract: (APS)
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.
Note:
  • 5 + 7 pages, 2 + 3 figures. Published version