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Device for generating continuously variable quantum entanglement among multiple atomic ensembles

A quantum entanglement and atomic ensemble technology, which is applied in the fields of instruments, nonlinear optics, optics, etc., can solve problems such as low-efficiency preparation, and achieve the effects of improved entanglement, good scalability, and good scalability

Active Publication Date: 2019-09-24
SHANXI UNIV
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Problems solved by technology

[0005] The purpose of the present invention is to solve the technical problem of low-efficiency preparation of quantum entanglement among existing multiple atomic ensembles, and provide an optical resonant cavity enhanced preparation with high efficiency, good scalability, good reliability, and high atomic entanglement degree. Generating device for continuously variable quantum entanglement among multiple atomic ensembles

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  • Device for generating continuously variable quantum entanglement among multiple atomic ensembles
  • Device for generating continuously variable quantum entanglement among multiple atomic ensembles
  • Device for generating continuously variable quantum entanglement among multiple 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, the device for generating continuous variable quantum entanglement between multiple atomic ensembles in this embodiment includes a light source unit 1, twelve acousto-optic modulators 21-24 and 31-38, and four sets of non-degenerate optical parameter Amplifiers 41-44, three 50:50 optical beam splitters 51-53, four sets of atomic systems 6a-6d and a measurement system 7; the light source unit 1 is provided with four beams of seed light pulse signals a S1 -a S4 Output terminal, four control light pulse signals a C1 -a C4 Output and four beams of local oscillator optical signals a L1 -a L4 Output terminal; the four beams of seed light pulse signals a S1 -a S4 The output terminals are respectively connected to the input terminals of the fifth to eighth acousto-optic modulators 31-34, and the output terminal...

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Abstract

The invention relates to a generation device for continuous variable quantum entanglement among multiple atom ensembles. The technical problem that low-efficiency preparation exists in quantum entanglement among multiple existing atom ensembles is mainly solved. According to the technical scheme, the generation device for continuous variable quantum entanglement among multiple atom ensembles comprises a light source unit, a plurality of acoustic optical modulators, four non-degeneration optical parameter amplifiers, an optical beam splitter, four atomic systems and a measuring system; the light source unit is provided with four seed optical pulse signal aSl-aS4 output ends, four control optical pulse signal aC1-aC4 output ends and four local oscillation optical signal aL1-aL4 output ends; the seed optical pulse signals aS1-aS4 are connected with the input ends of the atomic systems through the acoustic optical modulators, the optical parameter amplifiers and the optical beam splitter, the control optical pulse signal aC1-aC4 output ends are connected with the second input ends of the atomic systems through the acoustic optical modulators, and the output ends of the atomic systems are connected with the measuring system. The local oscillation optical signals aL1-aL4 are connected with the measuring system.

Description

technical field [0001] The invention relates to a device for generating continuous variable quantum entanglement between multiple atomic ensembles, in particular to a device for generating continuous variable quantum entanglement between four atomic ensembles, and the multiple atomic ensembles are enhanced by an optical resonant cavity The quantum correlation between them. Background technique [0002] Quantum entanglement is the core resource for realizing quantum information and quantum measurement. Quantum entanglement between photons and light fields has been achieved experimentally. In particular, quantum networks containing atomic quantum nodes are currently a hot spot in quantum information research. Among them, the atomic ensemble is one of the effective media for realizing quantum nodes, which can realize the storage and processing of quantum information. Therefore, the quantum entanglement between multiple atomic ensembles is not only of great scientific signifi...

Claims

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Application Information

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