Loading [a11y]/accessibility-menu.js
4-dB Quadrature Squeezing With Fiber-Coupled PPLN Ridge Waveguide Module | IEEE Journals & Magazine | IEEE Xplore

4-dB Quadrature Squeezing With Fiber-Coupled PPLN Ridge Waveguide Module


Impact Statement:We developed an optical parametric amplification module for quadrature squeezing with input and output ports coupled with optical fibers for both fundamental and second h...Show More

Abstract:

We have developed an optical parametric amplification module for quadrature squeezing with input and output ports coupled with optical fibers for both fundamental and sec...Show More
Impact Statement:
We developed an optical parametric amplification module for quadrature squeezing with input and output ports coupled with optical fibers for both fundamental and second harmonic. The module consists of a periodically poled LiNbO₃ ridge waveguide fabricated with dry etching, dichroic beamsplitters, lenses and four optical fiber pigtales. The high durability of the waveguide and the good separation of squeezed light from a pump beam by the dichroic beamsplitter lets us inject intense continuous-wave pump light with the power of over 300 mW. We perform -4.0±0.1 dB of noise reduction for a vacuum state at 1553.3 nm by using a fiber-optics-based measurement setup, which consists of a fiber-optic beamsplitter and a homemade fiber-receptacle balanced detector.

Abstract:

We have developed an optical parametric amplification module for quadrature squeezing with input and output ports coupled with optical fibers for both fundamental and second harmonic. The module consists of a periodically poled LiNbO3 ridge waveguide fabricated with dry etching, dichroic beamsplitters, lenses and four optical fiber pigtales. The high durability of the waveguide and the good separation of squeezed light from a pump beam by the dichroic beamsplitter enable us to inject intense continuous-wave pump light with the power of over 300 mW. We perform -4.0±0.1 dB of noise reduction for a vacuum state at 1553.3 nm by using a fiber-optics-based measurement setup, which consists of a fiber-optic beamsplitter and a homemade fiber-receptacle balanced detector. The intrinsic loss of the squeezed vacuum in the module is estimated to be 25%. Excluding the extrinsic loss of the measuremental system, the squeezing level in the output fiber of the module is estimated to be -5.7±0.1 dB. A modularized alignment-free fiber-coupled quadrature squeezer could help to realize quantum information processing with fiber optics.
Published in: IEEE Journal of Quantum Electronics ( Volume: 56, Issue: 3, June 2020)
Article Sequence Number: 6000100
Date of Publication: 23 March 2020

ISSN Information:

Funding Agency:


References

References is not available for this document.