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Macroscopic Noise Amplification by Asymmetric Dyads in Non-Hermitian Optical Systems for Generative Diffusion Models
Alexander Johnston1, Natalia G Berloff1
1Department of Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge CB3 0WA, United Kingdom.
Physical Review Letters
|March 15, 2024
Summary
Asymmetric non-Hermitian optical systems amplify noise. Modifying pumping strengths and couplings can create efficient sensors, random number generators, and analog machine learning models.
Area of Science:
- Non-Hermitian optics
- Quantum information science
- Machine learning hardware
Background:
- Non-Hermitian systems exhibit unique phenomena like noise amplification.
- Asymmetric dyads in optical systems present opportunities for novel functionalities.
- Current digital machine learning models face limitations in speed and energy consumption.
Purpose of the Study:
- To investigate noise amplification in asymmetric dyads within non-Hermitian optical systems.
- To explore the potential of these systems for applications in sensing and random number generation.
- To propose the use of integrated light emission for analog all-optical degenerative diffusion models.
Main Methods:
- Theoretical study of noise amplification in freely expanding non-Hermitian optical systems.
- Analysis of modifications to pumping strengths to counteract hardware bias.
- Investigation of coupling effects between dyads on statistical distributions.
Main Results:
- Pumping strength modifications can effectively counteract system hardware bias.
- Couplings between dyads result in nonuniform statistical distributions.
- Asymmetric non-Hermitian dyads demonstrate potential for efficient sensors and ultrafast random number generators.
Conclusions:
- Asymmetric non-Hermitian dyads are promising for advanced technological applications.
- Integrated light emission offers a pathway for efficient analog all-optical machine learning.
- This research could overcome digital limitations in machine learning processing speed and energy use.

