Quantum/Optics CN

强度干涉测量法

This page details the principles and advantages of intensity interferometry, a powerful technique in optical astronomy used to measure stellar diameters and spatial structure through photon correlation. Swabian Instruments’ Time Taggers enable high-precision, scalable, and synchronized intensity interferometry experiments with picosecond timing resolution, real-time data processing, and long-baseline support.

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Two schematic diagrams representing an intensity interferometry experiment with telescopes at a far (left) and near (right) distance, respectively. Left: Looking at the same bright star, each of the two telescopes is connected to a Time Tagger. The Time Taggers are synchronized such that they use the same reference clock. Right: The two telescopes, looking at the same bright star, are connected to the same Time Tagger. In this case, there is no need for synchronization, because the single Time Tagger has an internal reference clock.

光探测磁共振 (ODMR)

Optically detected magnetic resonance (ODMR) is a powerful technique widely used in quantum sensing, magnetic field measurement, and material analysis.

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光探测磁共振 (ODMR)

光子数分辨 (PNR)

Photon number resolution (PNR) is an enabling technique used to assign the number of photons involved in a detection event precisely.

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光子数分辨 (PNR)

线性光学量子信息 (LOQI)

Explore Linear Optics Quantum Information (LOQI) and its applications in quantum computing and secure communication. Learn about Swabian Instruments' Time Taggers and their role in precise photon detection, timing, and analysis for advanced quantum experiments.

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线性光学量子信息 (LOQI)

光子集成电路 (PIC)

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From left to right: a rack-mounted setup with eight Swabian Instruments Time Tagger X units, labeled “up to 160 inputs.” In the center, a single Time Tagger X acquires input data from a photonic integrated circuit (PIC) containing multiple labeled components, including phase shifters and nonlinear frequency conversion elements. Light from the source is coupled into the PIC via an optical fiber array, manipulated on-chip, and detected by single-photon detectors before being read out by the timing electronics. The output data is transferred to a PC on the right side of the image.
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