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Updated: May 7, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Coherent control of quantum fluctuations using cavity electromagnetically induced transparency.

J A Souza¹, E Figueroa, H Chibani

¹Departamento de Física, Universidade Federal de São Carlos, P.O. Box 676, 13565-905, São Carlos, São Paulo, Brazil and Max-Planck-Institut für Quantenoptik, Hans-Kopfermann-Straße 1, D-85748 Garching, Germany.

Physical Review Letters

|October 1, 2013

Summary

Researchers demonstrate all-optical control of light

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Area of Science:

Quantum optics
Cavity quantum electrodynamics
Atomic physics

Background:

Quantum fluctuations in light beams are fundamental.
Controlling these fluctuations is key for quantum technologies.

Purpose of the Study:

To achieve all-optical control of quantum fluctuations in light.
To explore the use of cavity quantum electrodynamics and electromagnetically induced transparency for quantum control.
To develop a prototype quantum transistor.

Main Methods:

Utilizing single-atom cavity quantum electrodynamics (CQED).
Employing electromagnetically induced transparency (EIT) to tune CQED transition frequencies.
Leveraging photon blockade and antiblockade effects.

Main Results:

Generated sub-Poissonian and super-Poissonian light fields.
Demonstrated tunable amplification and attenuation of relative intensity noise.
Showcased feasibility using realistic experimental parameters.

Conclusions:

All-optical control of quantum light fluctuations is achievable.
This method enables a novel quantum transistor prototype.
The findings pave the way for advanced quantum optical devices.