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A device for generating two-component continuous variable high-order orbital angular momentum entangled states

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

Active Publication Date: 2022-05-31
SHANXI UNIV
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  • Description
  • 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

Method used

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  • A device for generating two-component continuous variable high-order orbital angular momentum entangled states
  • A device for generating two-component continuous variable high-order orbital angular momentum entangled states
  • A device for generating two-component continuous variable high-order orbital angular momentum entangled states

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Embodiment Construction

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

[0062] Specifically, the laser in the present invention adopts a titanium sapphire laser.

[0076] The seventh mirror 27 is arranged behind the sixth mirror 26, and couples the signal pump light to the

[0084] The D-shaped mirror 15 is placed below the second balanced amplifying photodetector 162 to change the amplified signal

[0085] The adder / subtractor 17 is placed in the first balanced amplification photodetector 161 and the second balanced amplification photoelectric

[0090] The high-frequency signal generator 6 is located below the laser 1.

[0094] The frequency of the Ti:sapphire laser is adjusted to the frequency of the pump light, and most of the output light is used as the pump beam. The pump beam is

[0098] Two balanced zero-beat detectors (BHDs) scanned in phase are used to ensure that the twin ...

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Abstract

The invention provides a device and method for preparing a two-component continuous variable high-order orbital angular momentum entanglement state, including a titanium sapphire laser, a mirror, an optical beam splitter, a half-wave plate, an electro-optical modulator, and a high-frequency signal generator , filter, lens group, Glan laser prism, cesium atom pool, Glan Thomson prism, beam collector, balanced zero-beat detector, adder and subtractor, spectrum analyzer. The device of the invention can obtain a continuous variable high-order orbital angular momentum entanglement state with a maximum entanglement degree of -3.8dB, and the device has stable performance and compact structure, and can realize commercial production. Cesium atom D 1 The line transition frequency corresponds to the quantum dot exciton emission region of indium arsenide, and the one produced by the present invention corresponds to the cesium atom D 1 The two-component continuous variable high-order orbital angular momentum entangled state light source with linear transition frequency can be used in the fields of coherent interface research and quantum precision measurement based on atoms and solid-state systems.

Description

A device for generating two-component continuous variable high-order orbital angular momentum entangled states technical field The present invention relates to the field of orbital angular momentum entangled light sources, particularly to a kind of high-order producing two-component continuous variable A device for orbital angular momentum entangled states. Background technique [0002] Quantum entanglement, as a basic resource for quantum information processing, has potential in the fields of quantum communication networks and quantum computing. application prospects. With the continuous expansion of quantum communication networks and the continuous improvement of quantum computing complexity, multi-dimensional, multi-group The study of entangled states and multi-degree-of-freedom entangled states has attracted more and more attention. Orbital angular momentum momentum, OAM) as a special degree of freedom, its unique spatial structure and high-dimensional characteri...

Claims

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Application Information

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