Cooling of a levitated nanoparticle to the motional quantum ground state.

Journal Article (Journal Article)

Quantum control of complex objects in the regime of large size and mass provides opportunities for sensing applications and tests of fundamental physics. The realization of such extreme quantum states of matter remains a major challenge. We demonstrate a quantum interface that combines optical trapping of solids with cavity-mediated light-matter interaction. Precise control over the frequency and position of the trap laser with respect to the optical cavity allowed us to laser-cool an optically trapped nanoparticle into its quantum ground state of motion from room temperature. The particle comprises 108 atoms, similar to current Bose-Einstein condensates, with the density of a solid object. Our cooling technique, in combination with optical trap manipulation, may enable otherwise unachievable superposition states involving large masses.

Full Text

Duke Authors

Cited Authors

  • Delić, U; Reisenbauer, M; Dare, K; Grass, D; Vuletić, V; Kiesel, N; Aspelmeyer, M

Published Date

  • February 2020

Published In

Volume / Issue

  • 367 / 6480

Start / End Page

  • 892 - 895

PubMed ID

  • 32001522

Electronic International Standard Serial Number (EISSN)

  • 1095-9203

International Standard Serial Number (ISSN)

  • 0036-8075

Digital Object Identifier (DOI)

  • 10.1126/science.aba3993


  • eng