Generation device of quantum entanglement among three atomic ensembles

A technology of atomic ensemble and generating device, applied in nonlinear optics, instrumentation, optics, etc., to achieve good scalability, low additional noise, and good reliability

Active Publication Date: 2016-07-27
SHANXI UNIV
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  • Abstract
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Problems solved by technology

[0006] The purpose of the present invention is to solve the technical problem of probabilistic preparation of quantum entanglement among existing multiple atomic ensembles, and provide a quantum entanglement between three atomic ensembles with certainty, good scalability and good reliability The generating device

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  • Generation device of quantum entanglement among three atomic ensembles
  • Generation device of quantum entanglement among three atomic ensembles
  • Generation device of quantum entanglement among three atomic ensembles

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Embodiment Construction

[0023] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 As shown, a device for generating quantum entanglement between three atomic ensembles in this embodiment includes a light source unit 1, nine acousto-optic modulators 21-29, three sets of optical parametric amplifiers 31-33, and a beam coupling system , three atomic ensembles 5-7, three sets of optical filter systems 46-48 and entanglement measurement system 8; the beam coupling system consists of two optical beam splitters 41, 42 with transmittance t=66.7%, t=50% and three Glan Thomson prisms 43-45. The light source unit 1 is provided with three beams of local oscillator optical signal output ends a L1 、a L2 、a L3 , three beams of control optical signal output terminal a C1 、a C2 、a C3 , three beams of seed light signal output terminal a S1 、a S2 、a S3 and three beams of pump light signal output a PUMP1 、a ...

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Abstract

The invention relates to a generation device of quantum entanglement among three atomic ensembles, and mainly aims to solve the existing technical problem of probability preparation existed by quantum entanglement among a plurality of atomic ensembles. The invention adopts the technical scheme that the generation device of quantum entanglement among the three atomic ensembles comprises a light source unit, nine acousto-optic modulators, three sets of optical parametric amplifiers, a beam coupling system, the three atomic ensembles, three sets of optical filtering systems and an entanglement measurement system. Under the light writing action of quantum memory, orthogonal component quantum states of three entangled light pulses are mapped into collective spin waves of the three atomic ensembles, and quantum entanglement among the three atomic ensembles is certainly established; then, under the light reading action of quantum memory, the collective spin wave quantum states of the three atomic ensembles are mapped into the orthogonal component quantum states of the three release light pulses, and quantum entanglement among the three atomic ensemble is certainly verified through measuring correlative characteristics of the orthogonal component quantum states of the three release light pulses and the collective spin waves of the three atomic ensembles.

Description

technical field [0001] The invention relates to a device for generating quantum entanglement among three atomic ensembles, which belongs to a device for generating deterministic quantum entanglement among three spatially separated atomic ensembles. Background technique [0002] Quantum entanglement is not only the core concept of quantum mechanics, but also an important resource for realizing quantum information and quantum measurement. With the development of quantum information science, the quantum information network composed of light and atoms is the key to the development of applications. Among them, atoms can be used as nodes for quantum information processing and storage. Therefore, the construction of quantum entanglement between multiple atomic ensembles can not only establish quantum correlations between multiple macroscopic objects, but also realize quantum information protocols such as quantum state transmission between multiple quantum nodes. [0003] The elec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/39
CPCG02F1/39G02F1/392
Inventor 闫智辉贾晓军彭堃墀
Owner SHANXI UNIV
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