Noise Effects on Entangled Coherent State Generated via Atom-Field Interaction and Beam Splitter

TL;DR

This paper presents a controllable method to generate multi-mode entangled coherent states using atom-field interactions and beam splitters, analyzing their entanglement and decoherence effects in noisy environments.

Contribution

It introduces a novel, controllable approach for producing multi-mode ECS's in cavity QED and studies their entanglement and decoherence properties.

Findings

Generated qubit, qutrit, and qufit ECS's with controllable parameters.

Analyzed entanglement using concurrence measure.

Investigated decoherence effects and impact on monogamy inequality.

Abstract

In this paper, we introduce a controllable method for producing two and three-mode entangled coherent states (ECS's) using atom-field interaction in cavity QED and beam splitter. The generated states play central roles in linear optics, quantum computation and teleportation. We especially focus on qubit, qutrit and qufit like ECS's and investigate their entanglement by concurrence measure. Moreover, we illustrate decoherence properties of ECS's due to noisy channels, using negativity measure. At the end the effect of noise on monogamy inequality is discussed.