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Updated: Feb 6, 2026
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Silicon Metal-oxide-semiconductor Quantum Dots for Single-electron Pumping
Published on: June 3, 2015
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Quantum control of phase fluctuations in semiconductor lasers
Christos T Santis1, Yaakov Vilenchik2, Naresh Satyan3
1Department of Applied Physics and Materials Science, California Institute of Technology, Pasadena, CA 91125; ayariv@caltech.edu christos@caltech.edu.
Summary
Researchers reduced quantum phase noise in semiconductor lasers by controlling spontaneous emission. This breakthrough significantly enhances laser coherence and stability for advanced integrated systems.
Area of Science:
- Optics and Photonics
- Semiconductor Device Physics
Background:
- Semiconductor lasers offer versatile control over light-emitter interactions.
- Controlling laser coherence and dynamics is crucial for advanced applications.
Purpose of the Study:
- To reduce quantum phase noise in semiconductor lasers.
- To achieve enhanced coherence and stability in laser systems.
Main Methods:
- Direct control of spontaneous emission into the laser mode.
- Precise manipulation of the optical mode's spatial field distribution.
- Leveraging the interplay between spontaneous emission and optical loss.
Main Results:
- Two orders of magnitude reduction in quantum noise.
- Demonstrated minimum laser linewidth of [Formula: see text].
- Achieved an order of magnitude enhancement in effective coherence.
Conclusions:
- The developed method significantly reduces quantum noise in semiconductor lasers.
- The approach enhances laser coherence and immunity to optical feedback.
- This technique holds potential for next-generation integrated coherent systems.
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