Hannover 2020 – scientific programme
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Q: Fachverband Quantenoptik und Photonik
Q 2: Optomechanics
Q 2.3: Talk
Monday, March 9, 2020, 11:30–11:45, a310
Entangling optically levitated nanoparticles by coherent scattering — •Henning Rudolph1, Klaus Hornberger1, and Benjamin Stickler1,2 — 1Fakultät für Physik, Universität Duisburg-Essen — 2QOLS, Imperial College London
Recently, coherent scattering of tweezer photons has been used to cool a levitated nanoparticle to the motional ground state [1]. We show how this technique can be extended to generate and verify translational entanglement between two nanoparticles, levitated in a common cavity and prepared in the ground state. Our method is based on the conditioned switching of the tweezer detuning from the blue to the red after detecting a Stokes photon. The arrival time distribution of the resulting anti-Stokes photon emission then reveals entanglement between the two particles provided its oscillation amplitude exceeds a time-dependent bound.
[1] U. Delić et al.: arXiv:1911.04406