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DTSTART:20190331T030000
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DTSTART:20191027T020000
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DTSTAMP:20260409T134715Z
UID:5c5c38a48b6db833325069@ist.ac.at
DTSTART:20190702T110000
DTEND:20190702T120000
DESCRIPTION:Speaker: Uros Delic\nhosted by Andrew Higginbotham\nAbstract: O
 ptically levitated nanoparticles in ultra-high vacuum promise access to qu
 antum behavior of massive objects at room temperature. Coupling the nanopa
 rticle center-of-mass motion to an optical cavity provides a route to cont
 rol its motion at the quantum level and gives rise to a new type of light-
 matter interface. As a first step toward quantum state preparation of nano
 sphere motion\, cavity sideband cooling technique has already been demonst
 rated several years ago [1].Here we demonstrate a new method of cavity coo
 ling a silica nanosphere based on coherent scattering. An optical tweezer 
 allows for precise positioning of the nanosphere inside an empty optical c
 avity [2]. In contrast to standard optomechanics\, cooling of its motion i
 s performed by cavity-enhanced coherent scattering of the red-detuned opti
 cal tweezer. We demonstrate genuine three-dimensional cavity cooling\, whi
 ch also allows for stable levitation in high vacuum [3]. Our observed cool
 ing performance and absence of laser phase noise heating indicates that th
 is new method enables ground state cooling of levitated nanoparticles in o
 ur current experiment.References:[1] Kiesel\, Blaser\, Delic et al.\, PNAS
  110: 14180-14185 (2013)[2] Delic\, Grass et al.\, arXiv:1902.06605 (2019)
 [3] Delic et al.\, Phys. Rev. Lett. 122\, 123602 (2019)
LOCATION:Heinzel Seminar Room / Office Bldg West (I21.EG.101)\, ISTA
ORGANIZER:swiddman@ist.ac.at
SUMMARY:Uros Delic: Cavity cooling of optically levitated nanoparticles: To
 wards quantum experiments at room temperature
URL:https://talks-calendar.ista.ac.at/events/1972
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