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Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators

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Published on: May 30, 2014

Optomechanical photon shuttling between photonic cavities.

Huan Li¹, Mo Li¹

¹Department of Electrical and Computer Engineering, University of Minnesota, Minneapolis, Minnesota 55455, USA.

Nature Nanotechnology

|September 22, 2014

Summary

Researchers developed a novel photon see-saw device. This optomechanical system uses mechanical motion to shuttle photons between two cavities, enabling new ways to control light-matter interactions.

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Area of Science:

Optics and Photonics
Quantum Optics
Nanotechnology

Background:

Optomechanical systems couple light and mechanical motion.
Cavity optomechanics focuses on localized modes, while extended modes offer non-local effects.
Controlling photon transport between optical cavities is crucial for quantum technologies.

Purpose of the Study:

To demonstrate a multicavity optomechanical device for photon shuttling.
To explore non-local optomechanical effects using extended mechanical modes.
To enable controlled photon transfer between photonic crystal nanocavities.

Main Methods:

Fabrication of a multicavity optomechanical device with torsional motion.
Utilizing optical forces to drive mechanical oscillations.
Modulating cavity resonance frequencies antisymmetrically via device rotation.
Pumping photons into one cavity to excite optomechanical self-oscillation.

Main Results:

Demonstrated torsional optomechanical motion shuttling photons between two photonic crystal nanocavities.
Achieved antisymmetric modulation of cavity resonance frequencies.
Observed strong modulation of inter-cavity coupling during optomechanical self-oscillation.
Successfully shuttled photons to an empty cavity in a well-regulated manner.

Conclusions:

The 'photon see-saw' device enables controlled, non-local photon transport.
This work extends optomechanics beyond localized cavity interactions.
The demonstrated mechanism offers a new platform for manipulating quantum states of light.