Device for generating two-component continuous variable high-order orbital angular momentum entangled state

A technology of orbital angular momentum and entanglement, applied in nonlinear optics, instruments, optics, etc., to achieve the effect of compact structure and stable performance

Active Publication Date: 2021-07-16
SHANXI UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, so far, there are few reports on the generation of continuous variable high-order orbital angular momentum entangled states by using the nondegenerate four-wave mixing process in the cesium atomic ensemble

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  • Device for generating two-component continuous variable high-order orbital angular momentum entangled state
  • Device for generating two-component continuous variable high-order orbital angular momentum entangled state
  • Device for generating two-component continuous variable high-order orbital angular momentum entangled state

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Embodiment Construction

[0056] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0057] The object of the present invention is to provide a device for generating the entangled state of two-component continuous variable high-order orbital angular momentum.

[0058] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0059] figure 1 It is a schematic s...

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Abstract

The invention provides a device and method for preparing a two-component continuous variable high-order orbital angular momentum entangled state, and the device comprises a Ti sapphire laser, a reflector, an optical beam splitter, a half-wave plate, an electro-optical modulator, a high-frequency signal generator, a filter, a lens group, a Glan laser prism, a cesium atom pool, a Glan-Thompson prism, a light beam collector, a balanced zero-beat detector, an adder-subtractor and a spectrum analyzer. According to the device, the continuous variable high-order orbital angular momentum entangled state with the maximum entanglement degree of-3.8 dB can be obtained, the device is stable in performance and compact in structure, and commercialized production can be achieved. The cesium atom D1 line transition frequency corresponds to a quantum dot exciton emission region of indium arsenide. The generated two-component continuous variable high-order orbital angular momentum entangled state light source corresponding to the cesium atom D1 line transition frequency can be applied to the fields of coherent interface research based on atoms and a solid-state system, quantum precision measurement and the like.

Description

technical field [0001] The invention relates to the field of orbital angular momentum entangled light sources, in particular to a device for generating two-component continuous variable high-order orbital angular momentum entangled states. Background technique [0002] Quantum entanglement, as a basic resource for quantum information processing, has potential applications in the fields of quantum communication networks and quantum computing. With the continuous expansion of quantum communication networks and the continuous improvement of the complexity of quantum computing, the research on multi-dimensional, multi-component and multi-degree-of-freedom entangled states has attracted more and more attention. Orbital angular momentum (OAM), as a special degree of freedom, its unique spatial structure and high-dimensional characteristics can greatly improve the channel capacity and transmission rate of quantum communication. Using OAM beams as different carriers to multiplex an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/35
CPCG02F1/3536G02F1/3501
Inventor 马荣秦忠忠
Owner SHANXI UNIV
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