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Balanced zero-beat photoelectric detector for integrated locked branch

A detector and balanced technology, applied in the field of photodetectors, can solve the problems of reducing compression, loss sensitivity, cumbersome wiring, etc., to achieve the effect of bandwidth improvement

Inactive Publication Date: 2020-02-11
SHANXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, squeezed light is extremely sensitive to loss, and this method reduces the degree of compression detected
Moreover, the addition of components such as beam splitters and phase-locked detectors makes the layout of the entire device complex and the wiring is cumbersome

Method used

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  • Balanced zero-beat photoelectric detector for integrated locked branch
  • Balanced zero-beat photoelectric detector for integrated locked branch
  • Balanced zero-beat photoelectric detector for integrated locked branch

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Embodiment

[0029] A balanced zero-beat detector with an integrated locking branch, comprising a first PIN photodiode 1 and a second PIN photodiode 2, the anode of the first PIN photodiode 1 is connected to the cathode of the second PIN photodiode, and the junction is a, the cathode of the first PIN photodiode 1 is connected to +15V voltage, the anode of the second PIN photodiode is connected to -15V voltage, and the node a is connected to one end of the AC coupling capacitor 3 and the DC coupling inductor 4 respectively, so The other end of the AC coupling capacitor 3 is connected to the inverting input of the high-frequency transimpedance amplifying circuit 5, the output of the high-frequency transimpedance amplifying circuit 5 is connected to the SMA head output, and the node is b, the The other end of the DC coupling inductance 4 is connected with the non-inverting input terminal of the low-frequency DC amplifier circuit 6, the output terminal of the low-frequency DC amplifier circuit ...

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Abstract

The invention, which belongs to the technical field of photoelectric detectors, particularly relates to a balanced zero-beat photoelectric detector for non-classical light field detection in a continuous variable quantum optical experiment, in particular to a photoelectric detector for locking a relative phase between a non-classical light field and a local light field and detecting a corresponding phase non-classical light field orthogonal component in a broadband range. The invention aims at providing balanced zero-beat detector having advantages of low noise, high gain and wide bandwidth, thereby solving a problem of detection of specific orthogonal components of a broadband compressed light field and thereby realizing measurement of a specific orthogonal component of compressed light in a broadband range under phase locking of the compressed light and local light. The balanced zero-beat photoelectric detector has advantages of low noise, high gain, wide broadband, alternating-current and direct-current monitoring and phase locking and the like. The balanced zero-beat photoelectric detector can be well used for detecting the orthogonal component of the compressed light after therelative phase between the compressed light and the local light is locked.

Description

technical field [0001] The invention belongs to the technical field of photodetectors, in particular to a balanced zero-beat photodetector for non-classical light field detection in continuous variable quantum optics experiments, in particular to a method for locking the relative phase between non-classical light fields and local light fields , a photodetector that detects the quadrature component of the corresponding phase nonclassical light field in the broadband range. Background technique [0002] In continuous variable quantum optics, the squeezed state light field is one of the most important nonclassical light fields. Squeezed light fields are widely used in quantum computing, gravitational wave detection, quantum radar, quantum information and other fields because they can break through the shot noise benchmark in a certain orthogonal component and have extremely low noise. High compression can enhance the error tolerance rate of quantum computing, improve the sensi...

Claims

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Application Information

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IPC IPC(8): G01J1/42G01J1/44G01J11/00
CPCG01J1/4228G01J1/4257G01J1/44G01J11/00G01J2001/446
Inventor 郑耀辉王锦荣田龙
Owner SHANXI UNIV
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