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Dynamic acousto-optic control of a strongly coupled photonic molecule
- Source :
- Nature Communications
- Publication Year :
- 2015
-
Abstract
- Strongly confined photonic modes can couple to quantum emitters and mechanical excitations. To harness the full potential in quantum photonic circuits, interactions between different constituents have to be precisely and dynamically controlled. Here, a prototypical coupled element, a photonic molecule defined in a photonic crystal membrane, is controlled by a radio frequency surface acoustic wave. The sound wave is tailored to deliberately switch on and off the bond of the photonic molecule on sub-nanosecond timescales. In time-resolved experiments, the acousto-optically controllable coupling is directly observed as clear anticrossings between the two nanophotonic modes. The coupling strength is determined directly from the experimental data. Both the time dependence of the tuning and the inter-cavity coupling strength are found to be in excellent agreement with numerical calculations. The demonstrated mechanical technique can be directly applied for dynamic quantum gate operations in state-of-the-art-coupled nanophotonic, quantum cavity electrodynamic and optomechanical systems.<br />Dynamic control of components is required for large-scale quantum photonic networks. Here, Kapfinger et al. show dynamic control of the interaction between two coupled photonic crystal nanocavities forming a photonic molecule. Tuning is achieved by using an electrically generated radio frequency surface acoustic wave.
- Subjects :
- Physics
Multidisciplinary
business.industry
Surface acoustic wave
Nanophotonics
Physics::Optics
General Physics and Astronomy
Nanotechnology
General Chemistry
Article
General Biochemistry, Genetics and Molecular Biology
ddc
Coupling (physics)
Quantum gate
Optoelectronics
ddc:530
Radio frequency
Photonics
business
Quantum
Photonic crystal
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Nature Communications
- Accession number :
- edsair.doi.dedup.....8beb277ceb7e5392f14d06e089e3f3f9