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DTSTAMP:20260424T114248Z
UID:1740484800@ist.ac.at
DTSTART:20250225T130000
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DESCRIPTION:Speaker: Tracy Northup\nhosted by Onur Hosten\nAbstract: Can we
  prepare quantum-mechanical states of motion of macroscopic objects — fo
 r example\, superposition states of massive objects where the distance sca
 le of the superposition is as large as the object itself? Such states woul
 d allow us both to investigate fundamental questions about quantum mechani
 cs and to build novel sensors and transducers. A levitated nanoparticle in
  ultra-high vacuum is a promising experimental system with which to invest
 igate these questions.I will present experimental work with silica nanopar
 ticles in ion traps in which we aim to bring these particles into the quan
 tum regime. Here\, we adapt techniques originally developed for trapped at
 omic ions\, including detection via self-interference and sympathetic cool
 ing\, for the domain of nanoparticles [1\,2]. Quality factors above 1010 p
 rovide evidence of the particles' extreme isolation from their environment
  [3]. Recently\, we have trapped a calcium ion and a nanoparticle together
  in a linear Paul trap [4]\, which provides a potential route to prepare t
 he nanoparticle's motion in nonclassical states.In these experiments\, lig
 ht is both an enabling tool and a source of decoherence. On one hand\, opt
 ical interference allows us to detect a nanoparticle's position precisely.
  On the other hand\, photon recoil and heating of the particle's internal 
 temperature present challenges to reaching the quantum regime.[1] L. Dania
 \, K. Heidegger\, D. S. Bykov\, G. Cerchiari\, G. Arenada\, T. E. Northup\
 , Phys. Rev. Lett. 129\, 013601 (2022)[2] D. S. Bykov\, L. Dania\, F. Gosc
 hin\, T. E. Northup\, Optica 10\, 438 (2023)[3] L. Dania\, D. S. Bykov\, F
 . Goschin\, M. Teller\, A. Kassid\, T. E. Northup\, Phys. Rev. Lett. 132\,
  133602 (2024)[4] D. S. Bykov\, L. Dania\, F. Goschin\, T. E. Northup\, ar
 Xiv:2403.02034 (2024)
LOCATION:Moonstone Building / Ground Floor / Seminar Room G\, ISTA
ORGANIZER:sandra.widdmann@ista.ac.at
SUMMARY:Tracy Northup: Levitated nanoparticles: a route to the quantum regi
 me
URL:https://talks-calendar.ista.ac.at/events/5523
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