Photothermal Fluctuations as a Fundamental Limit to Low-Frequency Squeezing in a Degenerate Optical Parametric Amplifier
arXiv:quant-ph/0505154 · doi:10.1103/PhysRevA.72.043819
Abstract
We study the effect of photothermal fluctuations on squeezed states of light through the photo-refractive effect and thermal expansion in a degenerate optical parametric amplifier (OPA). We also discuss the effect of the photothermal noise in various cases and how to minimize its undesirable consequences. We find that the photothermal noise in the OPA introduces a significant amount of noise on phase squeezed beams, making them less than ideal for low frequency applications such as gravitational wave (GW) interferometers, whereas amplitude squeezed beams are relatively immune to the photothermal noise and may represent the best choice for application in GW interferometers.
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- Extra phase noise from thermal fluctuations in nonlinear optical crystals
- Dissipative Quantum Feedback in Measurements Using a Parametrically Coupled Microcavity
- Low frequency phase signal measurement with high frequency squeezing
- Optical back-action on the photothermal relaxation rate
- Machine Learning for Quantum-Enhanced Gravitational-Wave Observatories