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Multiphoton Effects Enhanced due to Ultrafast Photon-Number Fluctuations
Kirill Yu Spasibko1,2, Denis A Kopylov3, Victor L Krutyanskiy3,4
1Max Planck Institute for the Science of Light, Staudtstraße 2, 91058 Erlangen, Germany.
Physical Review Letters
|December 30, 2017
Summary
Noisy light sources significantly enhance multiphoton effects like optical harmonic generation. This research demonstrates up to a 100-fold increase using bright squeezed vacuum, offering a new approach for nonlinear optics.
Area of Science:
- Quantum optics
- Nonlinear optics
Background:
- Multiphoton effects scale with light's autocorrelation function.
- Photon-number fluctuations enhance these effects.
- Coherent sources are less efficient than noisy sources for multiphoton processes.
Purpose of the Study:
- To investigate the enhancement of optical harmonic generation using quantum noise.
- To explore the potential of bright squeezed vacuum as a light source for nonlinear optics.
Main Methods:
- Generation of optical harmonics of orders 2-4.
- Utilizing bright squeezed vacuum, a quantum noise-dominated light state.
- Characterization of harmonic generation efficiency.
Main Results:
- Observed up to two orders of magnitude enhancement in optical harmonic generation.
- Demonstrated the efficiency of bright squeezed vacuum for nonlinear optical processes.
- Showcased the role of ultrafast photon-number fluctuations in enhancing harmonic generation.
Conclusions:
- Bright squeezed vacuum significantly boosts optical harmonic generation efficiency.
- Noisy light sources are advantageous for nonlinear optics, especially for fragile materials.
- This technique allows for stronger nonlinear effects without increasing peak power, mitigating damage.
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