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Related Experiment Video

Updated: Jun 25, 2026

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Generation and Coherent Control of Pulsed Quantum Frequency Combs

Published on: June 8, 2018

Resonant sum frequency generation with time-energy entangled photons.

S Sensarn¹, Irfan Ali-Khan, G Y Yin

¹Edward L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA. sensarn@stanford.edu

Physical Review Letters

|March 5, 2009

Summary

We enhanced sum frequency generation efficiency by using entangled photons. This technique, by resonating the sum frequency field, increased generated power by a factor of 12.

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Area of Science:

Nonlinear optics
Quantum optics

Background:

Sum frequency generation (SFG) is a crucial nonlinear optical process.
Enhancing SFG efficiency is vital for applications in spectroscopy and optical parametric processes.

Purpose of the Study:

To develop a novel technique for improving the efficiency of sum frequency generation.
To investigate the impact of entangled photons and field resonance on SFG output.

Main Methods:

Utilized entangled signal and idler photons as input for SFG.
Implemented resonance of the sum frequency field within the experimental setup.

Main Results:

Observed a linear relationship between generated SFG power and input power.
Achieved a significant enhancement in SFG efficiency, with generated power increased by a factor of 12.

Conclusions:

Entangled photons combined with sum frequency field resonance offer a powerful method for enhancing SFG efficiency.
The demonstrated technique provides a scalable pathway for improving nonlinear optical processes.