Single-photon polarization state quantum imaging system based on DMD micromirror array

A technology of micromirror array and quantum imaging, which is applied in the direction of instruments, etc., to achieve the effect of low price, broad application prospects and scientific research value, and small size

Inactive Publication Date: 2019-11-22
QINGYUAN TIANZHIHENG SENSING TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, current experimental measurements and theoretical analysis show that single-photon imaging still has application problems.

Method used

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  • Single-photon polarization state quantum imaging system based on DMD micromirror array
  • Single-photon polarization state quantum imaging system based on DMD micromirror array
  • Single-photon polarization state quantum imaging system based on DMD micromirror array

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Embodiment Construction

[0024] like figure 1 , the single-photon polarization quantum imaging system based on the DMD micromirror array of the present invention includes a laser emitting device 1 , a single-photon preparation system 2 , a DMD-controlled imaging device 3 , and an EMCCD imaging receiving system 4 .

[0025] like figure 2 , the single photon preparation device is composed of a spatial filter 5 , a neutral density filter 6 , and a half-wave plate 7 . The laser beam is emitted from the semiconductor laser, and undergoes spatial filtering and multi-stage attenuation through the spatial filter 5 and several neutral density filters 6 . A semiconductor laser with 100μW power emits λ=780nm laser light with an attenuation of 10 6 can reach the single-photon level. The single photon pulse directly acts on the half-wave plate, and the polarization state of the photon is switched into four directions: horizontal, vertical, diagonal, and anti-diagonal by controlling the half-wave plate.

[002...

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Abstract

The invention relates to a single-photon polarization state quantum imaging system based on a DMD micromirror array. The system comprises a laser transmitting device, a single-photon preparation system, a DMD control imaging device, and an EMCCD imaging receiving system; the laser transmitting device is a semiconductor laser and is used for emitting laser beams; the single-photon preparation system is used for converting the laser emitted by the laser transmitting device into single photon pulses in different polarization states; the MD control imaging device directly acts on the single photonpulses in different polarization states and reflects the single photon pulses to the EMCCD imaging receiving system; the EMCCD imaging receiving system images the single photons in different polarization states, performs statistical analysis on detected photon information, and also obtains an image measurement error rate and imaging reliability. The system is simple in structure, convenient to operate, accurate in measurement, high in feasibility and easy to apply.

Description

technical field [0001] The invention relates to the technical field of single-photon imaging, in particular to a single-photon polarization state quantum imaging system based on a DMD micromirror array. Background technique [0002] Single-photon imaging has broad application prospects. However, current experimental measurements and theoretical analyzes show that single-photon imaging still has application problems. Single photons will be affected or lost in the process of transmission, so both the generation and modulation of single photons, as well as the reception and detection of single photons need to be improved. Contents of the invention [0003] In view of this, it is necessary to address the above-mentioned problems and provide a single-photon polarization state quantum imaging system based on DMD micromirror array, which has a simple structure, easy operation, accurate measurement, strong feasibility, and easy practicality. [0004] A single-photon polarization...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01J11/00
CPCG01J11/00
Inventor 梁洁黄巍廖开宇张新定颜辉
Owner QINGYUAN TIANZHIHENG SENSING TECH CO LTD
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