title: Application of quantum spectral interferometry for precise distance measurement
title: Ð²ÑÐ¿ÑÑÐºÐ½Ð°Ñ ÐºÐ²Ð°Ð»Ð¸ÑÐ¸ÐºÐ°ÑÐ¸Ð¾Ð½Ð½Ð°Ñ ÑÐ°Ð±Ð¾ÑÐ° Ð¼Ð°Ð³Ð¸ÑÑÑÐ°
titleType: Subtitle
Creators: name: Ð®Ñ Ð¥ÑÐ½ÑÑÐ½Ñ
Publisher: name: Ð¡Ð°Ð½ÐºÑ-ÐÐµÑÐµÑÐ±ÑÑÐ³ÑÐºÐ¸Ð¹ Ð¿Ð¾Ð»Ð¸ÑÐµÑÐ½Ð¸ÑÐµÑÐºÐ¸Ð¹ ÑÐ½Ð¸Ð²ÐµÑÑÐ¸ÑÐµÑ ÐÐµÑÑÐ° ÐÐµÐ»Ð¸ÐºÐ¾Ð³Ð¾
Year: 2023
Subjects: ÐÐ½ÑÐµÑÑÐµÑÐ¾Ð¼ÐµÑÑÐ¸Ñ
ÐÐ²Ð°Ð½ÑÐ¾Ð²Ð°Ñ Ð¾Ð¿ÑÐ¸ÐºÐ°
Ð¸Ð·Ð¼ÐµÑÐµÐ½Ð¸Ðµ ÑÐ°ÑÑÑÐ¾ÑÐ½Ð¸Ð¹
Ð´ÐµÑÐµÐºÑÐ¾ÑÑ Ð¾Ð´Ð¸Ð½Ð¾ÑÐ½ÑÑ ÑÐ¾ÑÐ¾Ð½Ð¾Ð²
distance measurement
single-photon detectors

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description: The subject of the graduate qualification work is "Application of quantum spectral interferometry for precise distance measurement". Quantum precision distance measurement using spectral domain biphoton interferometry based on Hong-Ou-Mandel (HOM) interferometry has shown great promise in achieving highly accurate distance measurements. Focus on the experimental aspects of this technique and highlight its advantages and potential applications. By highlight the advantages of this experimental approach, including its versatility and compatibility with various optical systems and setups. The technique can be implemented using different photon sources and wavelengths, allowing for flexibility in experimental design. Moreover, the non-destructive nature of the measurements enables repeated measurements without compromising the quality of the photons. When designing the experiment, the difference between the two experiments is that the second experiment has one more input fiber than the first experiment. The first experiment aims to characterize the LED and establish the baseline coincidence probabilities. The LED is fixed at a known position, and the coincidence probabilities between photons of different wavelengths are measured. This experiment helps to understand the behavior of the LED and serves as a calibration step. The second experiment is focused on the precise distance measurement using spectral domain biphoton interferometry. In this experiment, the LED is moved to different positions, and the coincidence probabilities between photons of different wavelengths are measured for each position. Then the optical path difference is calculated through some measured parameters through a formula. In terms of processing the experimental data, MATLAB software was used, including making 3D plots of the coincidence probability and using the zero-padding method to obtain the shift of the coincidence probability and oscillation period. Finally get the conclusion. Spectral domain biphoton interferometry provides a powerful and precise method for distance measurement. It enables researchers to overcome challenges related to conventional techniques and offers improved accuracy and reliability. By utilizing advanced mathematical formulas, calibration techniques, and MATLAB based data analysis, researchers can achieve high-precision ranging in applications such as optical metrology, quantum communication, and quantum information processing.