Generation device for continuous variable quantum entanglement source

A technology for generating devices and quantum entanglement, which is applied in nonlinear optics, instruments, optics, etc., can solve the problems of restricting continuous variable quantum entanglement sources, and achieve the effects of improving stability and reliability, simple operation, and easy productization

Active Publication Date: 2012-05-02
TAIYUAN SHANDA YUGUANG TECHNOLOGICAL
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Problems solved by technology

Restricting the continuous variable quantum entanglemen...

Method used

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  • Generation device for continuous variable quantum entanglement source
  • Generation device for continuous variable quantum entanglement source
  • Generation device for continuous variable quantum entanglement source

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Embodiment Construction

[0023] The present invention is a continuous variable quantum entanglement source generation device, such as Figure 1-4 shown.

[0024] figure 1 It is the principle block diagram of the present invention, the optical parametric amplifier 2 is pumped by the single-frequency laser 1, and the entangled light output by the optical parametric amplifier 2 is measured by the Bell state direct detection system 3. In order to improve the stability and reliability of the entanglement source device, the single-frequency laser 1 , the optical parametric amplifier 2 and the Bell state direct detection system 3 are all fixed on a base plate 4 . The optical parameter amplifier locking system 5 is used to automatically scan and lock the optical parameter amplifier 2 .

[0025] The specific optical path diagram of the continuous variable quantum entanglement source device is as follows: figure 2As shown, the single-frequency laser 1 is an intracavity frequency-doubled Nd:YAP / LBO laser pum...

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Abstract

The invention provides a generation device for a continuous variable quantum entanglement state light field. The generation device comprises a single-frequency laser (1), an optical parameter amplifier (2), a Bell state direct detection system (3), a bottom plate (4) and an optical parameter amplifier locking system (5); the used optical components are fixed on the bottom plate (4);the optical parameter amplifier locking system (5) is formed by a scanning unit (11), a locking threshold value setting unit (12), a comparison unit (13) and a locking unit (14), therefore, automatic locking for the optical parameter amplifier is achieved, and problems of bad operability and reliability of the conventional continuous variable quantum entanglement source can be solved. The generation device has the advantages of stability, reliability, simpleness in operation and the like and is applicable to volume production.

Description

technical field [0001] The invention relates to a device for generating a continuous variable non-classical light field, in particular to a device for generating a continuous variable quantum entangled state light field. Background technique [0002] Quantum informatics is an emerging interdisciplinary subject formed by the combination of information science and quantum mechanics, mainly including quantum computing and quantum communication. Quantum communication mainly includes quantum teleportation, quantum cryptography and quantum dense coding. Due to the unique nature of quantum entanglement sources, quantum information has the ability to break through the limits of existing classical information systems in terms of increasing computing speed, ensuring information security, increasing information capacity, and improving detection accuracy. [0003] The source of quantum entanglement is the core of quantum communication and quantum computing. The most important key and d...

Claims

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Application Information

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IPC IPC(8): G02F1/39G02F1/35
Inventor 郑耀辉贾晓军王文哲张宽收彭堃墀
Owner TAIYUAN SHANDA YUGUANG TECHNOLOGICAL
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