Phase-sensitive Manipulations of Squeezed Vacuum Field in an Optical Parametric Amplifier inside an Optical Cavity

TL;DR

This paper demonstrates phase-sensitive control of squeezed vacuum fields within an optical cavity using an optical parametric amplifier, highlighting quantum regime phenomena relevant for quantum information processing.

Contribution

It presents experimental evidence of phase-sensitive manipulation of quantum fluctuations in squeezed vacuum fields inside an optical cavity, advancing quantum control techniques.

Findings

Spectral features of reflected fields are phase-dependent.

Coherent quantum phenomena are observed in the OPA.

Quantum fluctuations can be manipulated for quantum information applications.

Abstract

Squeezed vacuum field can be amplified or deamplified when it is injected, as the signal beam, into a phase-sensitive optical parametric amplifier (OPA) inside an optical cavity. The spectral features of the reflected quantized signal field are controlled by the relative phase between the injected squeezed vacuum field and the pump field for the OPA. The experimental results demonstrate coherent phenomena of OPA in the quantum regime, and show phase-sensitive manipulations of quantum fluctuations for quantum information processing.