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Bright Sub-Poissonian Light through Intrinsic Feedback and External Control.
V S C Canela1, H J Carmichael1
1The Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics, University of Auckland, Private Bag 92019, Auckland 1142, New Zealand.
Physical Review Letters
|February 29, 2020
Summary
Researchers achieved number squeezing of 27 dB by balancing nonlinear gain and loss in a micromaser. This method utilizes trapping states for feedback, enabling precise photon number control and generating sub-Poissonian light with high squeezing.
Area of Science:
- Quantum optics
- Atomic physics
- Nonlinear dynamics
Background:
- Sub-Poissonian light generation is crucial for quantum technologies.
- Micromasers offer a platform for studying quantum phenomena.
- Controlling photon statistics requires precise feedback mechanisms.
Purpose of the Study:
- To demonstrate sub-Poissonian light generation using micromaser trapping states.
- To achieve significant number squeezing via nonlinear gain and loss balancing.
- To realize a high photon number state with controlled quantum statistics.
Main Methods:
- Utilizing micromaser trapping states to provide negative feedback.
- Implementing external parametric control for enhanced feedback.
- Balancing nonlinear gain and loss to manipulate photon number distributions.
Main Results:
- Achieved a photon number on the order of 100.
- Realized a Mandel Q parameter of -0.998.
- Demonstrated number squeezing of 27 dB, indicating sub-Poissonian light.
Conclusions:
- Micromaser trapping states effectively provide feedback for sub-Poissonian light generation.
- The combined approach of feedback and parametric control allows for high-precision photon number squeezing.
- This work advances the generation of non-classical light states for quantum applications.
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