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Updated: Jul 16, 2025
09:23
Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
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Enhancing quantum synchronization through homodyne measurement, noise, and squeezing.
Yuan Shen1, Hong Yi Soh2, Weijun Fan1
1School of Electrical and Electronic Engineering, Nanyang Technological University, Block S2.1, 50 Nanyang Avenue, 639798, Singapore.
Physical Review. E
|September 19, 2023
Summary
This study demonstrates that homodyne measurement enhances quantum synchronization in a quantum Stuart-Landau oscillator, even in the quantum regime. Noise and squeezing Hamiltonians can further boost synchronization effects.
Area of Science:
- Quantum nonlinear dynamics
- Quantum optics
- Quantum information science
Background:
- Quantum synchronization is a key area in quantum nonlinear dynamics.
- Efficiently boosting quantum synchronization remains a challenge.
- Homodyne measurement shows promise for enhancing synchronization, primarily in the semiclassical regime.
Purpose of the Study:
- To investigate the enhancement of phase synchronization in a harmonic-driven quantum Stuart-Landau oscillator.
- To explore the persistence of homodyne measurement-induced enhancement into the quantum regime.
- To analyze the effects of noise and squeezing Hamiltonians on quantum synchronization.
Main Methods:
- Analysis of a harmonic-driven quantum Stuart-Landau oscillator.
- Application of homodyne measurement.
- Inclusion of a squeezing Hamiltonian and investigation of damping rates (single-photon and two-photon).
Main Results:
- Homodyne measurement enhancement of phase synchronization persists into the quantum regime.
- Optimal two-photon damping rates are identified at resonance with a small single-photon damping rate.
- Noise can induce enhancement in quantum synchronization for large single-photon damping rates.
- A squeezing Hamiltonian further boosts synchronization, particularly in the semiclassical regime, and shifts/converges optimal two-photon pumping rates.
Conclusions:
- Homodyne measurement is an effective strategy for enhancing quantum synchronization beyond the semiclassical regime.
- Noise and quantum squeezing offer additional avenues for boosting synchronization in quantum systems.
- The findings provide insights into controlling and optimizing quantum synchronization dynamics.
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