Nonlocal Nondegenerate Optical Parametric Amplifier Based on Genuine Multipartite Entanglement

TL;DR

This paper introduces a novel nonlocal nondegenerate optical parametric amplifier scheme utilizing genuine four-mode entanglement, enabling remote amplification through local operations and classical communication, with practical experimental feasibility.

Contribution

It presents a new scheme for nonlocal optical amplification based on genuine four-mode entanglement, combining existing techniques for remote quantum information processing.

Findings

Scheme successfully achieves nonlocal amplification

Utilizes off-line four-mode entanglement and homodyne detection

Experimentally accessible setup proposed

Abstract

We propose a new scheme for realizing nonlocal nondegenerate optical parametric amplifier by means of genuine four-mode entanglement. The nondegenerate optical parametric amplifier is regarded as a unitary transformation from two input fields to two outputs. Two inputs and two outputs are located at the remote stations respectively. Employing off-line four-mode entanglement, homodyne detection, classical communication and local displacement, the nonlocal nondegenerate optical parametric amplifier can be achieved. This scheme can be implemented with a setup that is experimentally accessible at present.