22–26 Nov 2021
AlbaNova Main Building
Europe/Stockholm timezone
Please note: ECTI 2021 will be held as a hybrid event.

Feedback cooling and efficient detection of a levitated nanoparticle in a Paul trap

23 Nov 2021, 14:30
30m
Online via Zoom

Online via Zoom

invited talk online ECTI

Speaker

Tracy Northup (University of Innsbruck)

Description

Optomechanical systems in the quantum regime allow us to probe quantum mechanics at the boundary between the microscopic and macroscopic; these systems are also promising candidates for precision sensors. By levitating an optomechanical system in an ion trap, we decouple it from its environment, a significant advantage for quantum applications.

Interferometric methods have been used in trapped-ion experiments for detecting mechanical motion at the level of single quanta [1]. We have recently adapted this approach for nanoparticles [2], and here, I will present experimental results on efficient position detection via self-interference. As an application, we cool a nanoparticle, via feedback, to temperatures below those achieved in the same setup using a standard position measurement. As an outlook, I will outline a route to the quantum regime and discuss the role that an atomic ion can play in enabling the preparation of nonclassical motional states of a nanoparticle.

[1] G. Cerchiari, G. Areneda, L. Podhora, L. Slodicka, Y. Colombe, and R. Blatt, Phys. Rev. Lett. 127, 063603 (2021)
[2] G. Cerchiari, L. Dania, D. S. Bykov, R. Blatt, and T. Northup, arXiv:2103.08322 (2021).

Primary author

Tracy Northup (University of Innsbruck)

Presentation materials

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