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Updated: Apr 30, 2026
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Generation and Coherent Control of Pulsed Quantum Frequency Combs
Published on: June 8, 2018
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Pump-threshold-free frequency comb via cavity Floquet engineering
Sihan Wang1,2,3, Cheng Wang4, Matthijs H J de Jong4
1Beijing Key Laboratory of Fault-Tolerant Quantum Computing, Beijing Academy of Quantum Information Sciences, Beijing, China.
Nature Communications
|April 28, 2026
Summary
We demonstrate a novel method for generating optical frequency combs using cavity Floquet engineering. This ultra-low-power approach bypasses traditional thresholds and pump detuning issues for integrated frequency comb synthesis.
Area of Science:
- Optics and Photonics
- Quantum Engineering
- Nanotechnology
Background:
- Frequency combs are crucial for advanced technologies like communication and metrology.
- Existing integrated frequency comb technologies rely on Pockels or Kerr nonlinearities, facing limitations.
- Developing threshold-independent and low-power integrated comb solutions is a key research goal.
Purpose of the Study:
- To demonstrate a new method for generating frequency combs using cavity Floquet engineering.
- To present an ultra-low-power integrated frequency comb platform.
- To overcome limitations of existing nonlinear-based integrated frequency combs.
Main Methods:
- Cavity Floquet engineering by periodically modulating cavity resonance frequency with a mechanical oscillator.
- Generating a Floquet cavity with phase-locked, equally spaced frequency components.
- Utilizing an on-chip microwave cavity optomechanical system for comb generation.
Main Results:
- Successfully generated an output frequency comb via interaction of a pump tone with the Floquet cavity.
- Demonstrated threshold-independent operation and insensitivity to pump detuning.
- Achieved frequency comb generation with nanowatt-scale total power consumption.
Conclusions:
- Cavity Floquet engineering offers a viable alternative for integrated frequency comb synthesis.
- This method provides an ultra-low-power platform, overcoming key limitations of current technologies.
- The approach is robust against pump detuning and operates without a pumping threshold.
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