Quantum theory of non-Hermitian optical binding between nanoparticles
arXiv:2306.11893 · doi:10.1103/PhysRevA.110.063507
Abstract
Recent experiments demonstrate highly tunable nonreciprocal coupling between levitated nanoparticles due to optical binding [Rieser et al., Science 377, 987 (2022)]. In view of recent experiments cooling nanoparticles to the quantum regime, we here develop the quantum theory of small dielectric objects interacting via the forces and torques induced by scattered tweezer photons. The interaction is fundamentally non-Hermitian and accompanied by correlated quantum noise. We present the corresponding Markovian quantum master equation and show how to reach nonreciprocal and unidirectional coupling. Our work provides the theoretical tools for exploring and exploiting the rich quantum physics of nonreciprocally coupled nanoparticle arrays.
18 pages, 2 figures
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Cited by in corpus (6)
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- Optical Levitation of Arrays of Microspheres
- Motional entanglement of remote optically levitated nanoparticles
- Measurement-induced phase transition in free bosons
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