Generalized non-reciprocity in an optomechanical circuit via synthetic magnetism and reservoir engineering
Fang K, Luo J, Metelmann A, Matheny MH, Marquardt F, Clerk AA, Painter O (2017)
Publication Type: Journal article
Publication year: 2017
Journal
Book Volume: 13
Pages Range: 465-471
Journal Issue: 5
DOI: 10.1038/nphys4009
Abstract
Synthetic magnetism has been used to control charge neutral excitations for applications ranging from classical beam steering to quantum simulation. In optomechanics, radiation-pressure-induced parametric coupling between optical (photon) and mechanical (phonon) excitations may be used to break time-reversal symmetry, providing the prerequisite for synthetic magnetism. Here we design and fabricate a silicon optomechanical circuit with both optical and mechanical connectivity between two optomechanical cavities. Driving the two cavities with phase-correlated laser light results in a synthetic magnetic flux, which, in combination with dissipative coupling to the mechanical bath, leads to non-reciprocal transport of photons with 35 dB of isolation. Additionally, optical pumping with blue-detuned light manifests as a particle non-conserving interaction between photons and phonons, resulting in directional optical amplification of 12 dB in the isolator through-direction. These results suggest the possibility of using optomechanical circuits to create a more general class of non-reciprocal optical devices, and further, to enable new topological phases for both light and sound on a microchip.
Involved external institutions
California Institute of Technology (Caltech)
United States (USA) (US)
McGill University
Canada (CA)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
United States (USA) (US)
McGill University
Canada (CA)
Max-Planck-Institut für die Physik des Lichts (MPL) / Max Planck Institute for the Science of Light
Germany (DE)
How to cite
APA:
Fang, K., Luo, J., Metelmann, A., Matheny, M.H., Marquardt, F., Clerk, A.A., & Painter, O. (2017). Generalized non-reciprocity in an optomechanical circuit via synthetic magnetism and reservoir engineering. Nature Physics, 13(5), 465-471. https://doi.org/10.1038/nphys4009
MLA:
Fang, Kejie, et al. "Generalized non-reciprocity in an optomechanical circuit via synthetic magnetism and reservoir engineering." Nature Physics 13.5 (2017): 465-471.
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