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Updated: Apr 27, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Coherence and incoherence in an optical comb.

Evgeny A Viktorov¹, Tatiana Habruseva², Stephen P Hegarty³

¹National Research University of Information Technologies, Mechanics and Optics, 199034 St. Petersburg, Russia and Optique Nonlinéaire Théorique, Université Libre de Bruxelles, Campus Plaine, Code Postal 231, B-1050 Bruxelles, Belgium.

Physical Review Letters

|June 21, 2014

Summary

This summary is machine-generated.

Quantum dot lasers exhibit both ordered and random light patterns simultaneously. This unique chimera state was confirmed through optical and radio frequency measurements and numerical modeling.

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Area of Science:

Quantum optics
Laser physics
Nonlinear dynamics

Background:

Passively mode-locked lasers are crucial for generating optical frequency combs.
Quantum dot lasers offer unique properties for light generation.
Understanding mode behavior is key to controlling laser output.

Purpose of the Study:

To demonstrate the coexistence of coherent and incoherent modes in quantum dot laser combs.
To characterize this phenomenon using experimental and numerical methods.
To interpret the observed state as a chimera state.

Main Methods:

Experimental measurements including optical linewidth, radio frequency spectrum, and optical spectrum.
Numerical simulations using a delay-differential equation model.
Comparison of experimental results with numerical predictions.

Main Results:

Experimental evidence for simultaneous coherent and incoherent modes in the optical comb.
Numerical model accurately reproduced experimental observations.
Identification of the observed state as a chimera state.

Conclusions:

Quantum dot lasers can generate complex optical frequency combs with mixed mode behaviors.
The chimera state in this laser system is experimentally verifiable and numerically reproducible.
This finding opens new avenues for controlling and utilizing complex laser dynamics.