Rostock 2019 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 62: Optomechanics

Q 62.3: Talk

Friday, March 15, 2019, 11:15–11:30, S SR 111 Maschb.

Levitated electromechanics with charged nanoparticles — •Lukas Martinetz, Klaus Hornberger, and Benjamin A. Stickler — Fakultät für Physik, Universität Duisburg-Essen

Levitating a charged nanoscale particle between two capacitor plates, which are integrated into an electric circuit, provides a promising route to supplement techniques from levitated optomechanics. The ro-translational motion of a charged particle induces a current in the circuit, which can be used to detect, manipulate, and cool the particle motion [1-2]. We show that coupling the nanoparticle to a series or parallel RLC circuit can be used to realize resistive quantum cooling, even in the presence of circuit-induced heating due to Johnson-Nyquist noise. The resulting quantum master equation demonstrates how the quantum state of the nanoparticle can be manipulated with scalable electric circuitry, opening the door for levitated quantum electromechanics.

[1] J. Millen et al., Levitated electromechanics: all-electrical cooling of charged nano- and micro-particles, arXiv:1802.05928v2 (2018)

[2] L. S. Brown et al., Geonium theory: Physics of a single electron or ion in a Penning trap, Rev. Mod. Phys. 58, 233 (1986)