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Q: Fachverband Quantenoptik und Photonik
Q 21: Quantum Optomechanics II
Q 21.3: Talk
Tuesday, March 11, 2025, 11:30–11:45, HS I
Quantum optical binding of nanoscale particles — •Henning Rudolph1, Uros Delic2, Klaus Hornberger1, and Benjamin Stickler3 — 1University of Duisburg-Essen, Faculty of Physics, Lotharstraße 1, 47057 Duisburg, Germany — 2University of Vienna, Faculty of Physics, Boltzmanngasse 5, A-1090 Vienna, Austria — 3Ulm University, Institute for Complex Quantum Systems, Albert-Einstein-Allee 11, 89069 Ulm, Germany
Recent experiments demonstrate cooling of a levitated nanoparticle to its motional ground state, and realize highly tunable non-reciprocal coupling between levitated nanoparticles invoked by light scattering [1,2]. In light of this, I will present the quantum theory of small dielectric objects interacting via the forces and torques induced by scattered tweezer photons [3,4]. The resulting Markovian quantum master equation describes non-reciprocal coupling consistently with the classical results, and is accompanied by correlated quantum noise. I will show how to tune between reciprocal coupling, non-reciprocal coupling and correlated quantum noise and discuss implications for entanglement generation and unidirectional transport through optical binding.
[1] Rieser et al., Science 377, 987 (2022)
[2] Reisenbauer et al., Nat. Phys. 20, 1629 (2024)
[3] Rudolph et al., Phys. Rev. Lett., in press (2024)
[4] Rudolph et al., Phys. Rev. A, in press, arXiv:2306.11893 (2024)
Keywords: Levitated optomechanics; Optical binding; Nonreciprocity; Entanglement; Tweezer