Optoacoustic cooling of traveling hypersound waves

• URL: http://arxiv.org/abs/2305.19823v1
• Date: Wed, 31 May 2023 13:05:15 GMT
• Title: Optoacoustic cooling of traveling hypersound waves
• Authors: Laura Bl\'azquez Mart\'inez, Philipp Wiedemann, Changlong Zhu, Andreas Geilen and Birgit Stiller
• Abstract summary: We experimentally demonstrate optoacoustic cooling via stimulated Brillouin-Mandelstam scattering in a 50 cm-long tapered photonic crystal fiber. For a 7.38 GHz acoustic mode, a cooling rate of 219 K from room temperature has been achieved.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We experimentally demonstrate optoacoustic cooling via stimulated Brillouin-Mandelstam scattering in a 50 cm-long tapered photonic crystal fiber. For a 7.38 GHz acoustic mode, a cooling rate of 219 K from room temperature has been achieved. As anti-Stokes and Stokes Brillouin processes naturally break the symmetry of phonon cooling and heating, resolved sideband schemes are not necessary. The experiments pave the way to explore the classical to quantum transition for macroscopic objects and could enable new quantum technologies in terms of storage and repeater schemes.

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