Resonatorkühlung von dielektrischen Nanopartikeln

  • Arndt, Markus (Project Lead)
  • Kuhn, Stefan (Scientific Project Staff)
  • Paulovics, Verena (Admin)

Project: Research funding

Project Details

Abstract

CAVICOOL is a research project targeted at the development of advanced optical cooling techniques for size- and shape selected dielectric nanoparticles in ultra-high vacuum. It is explored as an enabling technology for future quantum interferometry experiments in the regime of ultrahigh masses, i.e. 107-1010 amu. CAVICOOL is based on the recent first successful demonstration of cavity cooling of dielectric nanoparticles by two independent research groups at the University of Vienna [1, 2]. CAVICOOL complements ongoing international efforts on nanoparticle cooling and shall pioneer the next big leaps in the field: CAVICOOL will study new laser-induced volatilization methods for size- and shape selected slow nanoparticles in ultrahigh vacuum. In particular laser-induced acoustic desorption (LIAD) and laser induced thermo-mechanical stress (LITHMOS) shall enable the launch of size-selected spherical particles with diameters between 30-300 nm. CAVICOOL will implement bimodal cooling in a free-standing cavity as a technique to reach temperatures in the millikelvin range for masses around 1010 amu. CAVICOOL will develop microcavities etched into pristine silicon wafers. The expected mirror quality and finesse shall enable focal beam waists as small as 5 m with mirror separations of approximately 500 m. This serves the goal of cooling with particles in the diameter range or 30-50 nm. CAVICOOL will implement fast optical feedback radial to the cavity axis to foster further slowing by increasing the residence time of the particles in the cooling field. This shall allow us to reach millikelvin temperatures also for particles in the 107 amu mass range. All this is an important prerequisite for future near-field quantum diffraction experiments with particles in the 107 amu mass range. CAVICOOL is a research project targeted at the development of advanced optical cooling techniques for size- and shape selected dielectric nanoparticles in ultra-high vacuum. It is explored as an enabling technology for future quantum interferometry experiments in the regime of ultrahigh masses, i.e. 107-1010 amu. CAVICOOL is based on the recent first successful demonstration of cavity cooling of dielectric nanoparticles by two independent research groups at the University of Vienna [1, 2]. CAVICOOL complements ongoing international efforts on nanoparticle cooling and shall pioneer the next big leaps in the field: CAVICOOL will study new laser-induced volatilization methods for size- and shape selected slow nanoparticles in ultrahigh vacuum. In particular laser-induced acoustic desorption (LIAD) and laser induced thermo-mechanical stress (LITHMOS) shall enable the launch of size-selected spherical particles with diameters between 30-300 nm. CAVICOOL will implement bimodal cooling in a free-standing cavity as a technique to reach temperatures in the millikelvin range for masses around 1010 amu. CAVICOOL will develop microcavities etched into pristine silicon wafers. The expected mirror quality and finesse shall enable focal beam waists as small as 5 m with mirror separations of approximately 500 m. This serves the goal of cooling with particles in the diameter range or 30-50 nm. CAVICOOL will implement fast optical feedback radial to the cavity axis to foster further slowing by increasing the residence time of the particles in the cooling field. This shall allow us to reach millikelvin temperatures also for particles in the 107 amu mass range. All this is an important prerequisite for future near-field quantum diffraction experiments with particles in the 107 amu mass range.
AcronymCAVICOOL
StatusFinished
Effective start/end date1/11/1430/04/18
  • David Bates Prize

    Millen, James (Recipient), 7 Sept 2017

    Prize: Prize, award or honor