Generation of concatenated Greenberger-Horne-Zeilinger-type entangled coherent state based on linear optics

TL;DR

This paper proposes a linear optics-based protocol for approximately generating concatenated GHZ-type entangled coherent states, which are promising for future quantum information applications.

Contribution

It introduces a novel protocol encoding logic in coherent states for constructing C-GHZ states using linear optics, differing from previous methods.

Findings

Feasible experimental protocol for C-GHZ state generation

Approximate construction of arbitrary C-GHZ states

Potential applications in quantum information processing

Abstract

The concatenated Greenberger-Horne-Zeilinger (C-GHZ) state is a new type of multipartite entangled state, which has potential application in future quantum information. In this paper, we propose a protocol of constructing arbitrary C-GHZ entangled state approximatively. Different from the previous protocols, each logic is encoded in the coherent state. This protocol is based on the linear optics, which is feasible in experimental technology. This protocol may be useful in quantum information based on the C-GHZ state.