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Quantum Physics

Title:Full Rotational Control of Levitated Silicon Nanorods

Abstract: We study a nanofabricated silicon rod levitated in an optical trap. By manipulating the polarization of the light we gain full control over the ro-translational dynamics of the rod. We are able to trap both its centre-of-mass and align it along the linear polarization of the laser field. The rod can be set into rotation at a tuned frequency by exploiting the radiation pressure exerted by elliptically polarized light. The rotational motion of the rod dynamically modifies the optical potential, which allows tuning of the rotational frequency over hundreds of Kilohertz. This ability to trap and control the motion and alignment of nanoparticles opens up the field of rotational optomechanics, rotational ground state cooling and the study of rotational thermodynamics in the underdamped regime.
Comments: 5 pages, 4 figures, 4 Supplementary pages, 4 Supplementary figures
Subjects: Quantum Physics (quant-ph); Mesoscale and Nanoscale Physics (cond-mat.mes-hall); Optics (physics.optics)
Journal reference: Optica Vol. 4, Issue 3, pp. 356-360 (2017)
DOI: 10.1364/OPTICA.4.000356
Cite as: arXiv:1608.07315 [quant-ph]
  (or arXiv:1608.07315v2 [quant-ph] for this version)

Submission history

From: James Millen [view email]
[v1] Thu, 25 Aug 2016 21:33:51 UTC (1,270 KB)
[v2] Thu, 16 Mar 2017 13:53:25 UTC (1,208 KB)