Device and method for automatically adjusting classical gain in continuous variable quantum entanglement source

A quantum entanglement and automatic adjustment technology, applied in nonlinear optics, instruments, optics, etc., can solve problems such as restricting continuous variable quantum entanglement sources, and achieve the effect of solving ease of operation
CN103149773AActive Publication Date: 2013-06-12北京欧屹科技有限公司
3 Cites 17 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京欧屹科技有限公司
Publication Date
2013-06-12

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a device and a method for automatically adjusting classical gain in a continuous variable quantum entanglement source. The device comprises an optical parameter amplifier, a photoelectric detector, a central processing unit and a temperature controller, wherein a working temperature adjustable nonlinear crystal is placed in the optical parameter amplifier; the photoelectric detector converts an optical signal transmitted by the optical parameter amplifier to an electrical signal; the electrical signal is input to the central processing unit by an analog / digital converter; a signal output by the central processing unit is input to the temperature controller by a digital / analog converter; the temperature of the nonlinear crystal is controlled by the temperature controller; and the method for automatically adjusting the classical gain comprises the steps that the photoelectric detector monitors a transmission signal of the optical parameter amplifier, and the working temperature of the nonlinear crystal is adjusted by a detection result, so that a peak-peak value of the transmission signal is maximum, that is the classical gain is maximum. The device solves the problem that the existing continuous variable quantum entanglement source is difficult to operate, and lays a foundation for the device from a laboratory to a market.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to the field of optoelectronic technology, in particular to a device and method for automatically adjusting classical gain in a continuous variable quantum entanglement source. 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 ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More