Continuous variable light and atom ensemble entanglement production device

Abstract

The invention relates to a continuous variable light and atom ensemble entanglement production device and mainly aims at solving the technical problem of existing probable production of separated variable light and atom ensemble entanglement. According to the technical scheme, the continuous variable light and atom ensemble entanglement production device comprises a light source unit, a plurality of light beam coupling systems, an atom system and a measurement system. The light source unit is provided with a pump light pulse signal aP output end, a writing light pulse signal aW output end, a reading light pulse signal aR output end, an output end for two local oscillation light signals aL1 and aL2 and an output end for two simulation light pulse signals aL3 and aL4. The device utilizes orthogonal components of light fields in continuous variable quantum information and collective spin waves of atom ensembles to definitely produce Stokes light and atom ensemble entanglement through spontaneous Raman scattering process and conducts measurement and analysis on the light and atom ensemble entanglement through anti-Stokes light produced in the spontaneous Raman scattering process.

Description

technical field [0001] The invention relates to a device for generating continuous variable light and atomic ensemble entanglement, belonging to a device for generating light and atomic ensemble entanglement applicable to quantum information networks. Background technique [0002] Quantum entanglement is one of the important contents of quantum mechanics, and it is also an important resource for quantum information transmission and processing. Entangled light has been experimentally prepared and applied to various quantum information protocols. The study of quantum information networks composed of atoms and light is the key to the development of applications. Among them, light is applied to the transmission of quantum information due to its advantages of fast transmission speed and weak interaction with the surrounding environment. Atoms can efficiently interact with light and serve as nodes for quantum information processing and storage. In addition to cavity quantum ele...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the technical problem of probabilistic preparation of the entanglement of light and atomic ensembles in the existing preparation of separate variables, and to provide a continuous variable light and atomic ensemble with compact structure and good reliability that can be applied to quantum information networks Deterministic Generator of Ensemble Entanglement

Images