Single NV color center packaging method and single NV color center device

Abstract

The invention discloses a single NV color center packaging method and a single NV color center device. The packaging method comprises the following steps of: a) connecting three optical fibers and setting light among the three optical fibers to transmit in a single direction, 1# optical fiber is connected with a laser and 2# optical fiber is connected with a spectrograph; b) dropping turbid liquid containing monocrystal diamond particles on the end surface of 3# optical fiber, and observing whether monocrystal diamond particles exist on the end surface of the 3# optical fiber or not, if so, entering c), and if not, repeating b); c) observing whether the typical fluorescent light of an NV color center appears on the spectrograph or not, if so, entering d), and if not, entering e); d) connecting the 2# optical fiber to a TAC (time-to-amplitude converter) to test an inverse correlation function, and judging whether the appeared NV color center is a single NV color center or not, if not, entering e); and e) washing monocrystal diamond particles away from the end surface of the 3# optical fiber, and repeating the step b). The invention simplified the single NV color center searching and positioning processes, saves the costs for searching and positioning the single NV color center and facilitates the research and application of single NV color center.

Description

technical field [0001] The invention relates to the encapsulation technology of single NV color center diamond particles, in particular to a single NV color center encapsulation method and a single NV color center device. Background technique [0002] In diamond crystals, there is an impurity defect in which N atoms replace C atoms. When this impurity defect is adjacent to a C atom vacancy, an NV color center is formed. A single NV color center has a special electronic structure and optical transition properties, which makes it potentially important in the fields of quantum information, quantum computing, and magnetic field measurement and magnetic imaging. In addition, a single NV color center is also an excellent single photon source , with high quantum fluorescence yield and good stability at room temperature. [0003] The premise of using a single NV color center is to be able to find a single NV color center. At present, the method used to find and confirm a single NV ...

AI Technical Summary

Problems solved by technology

[0004] 1) The confocal microscopy system requires the best microscopic imaging system and nanoscale scanning system, so it will inevitably lead to high costs;

[0005] 2) It takes a lot of time and manpower to find and locate a single NV color center;

[0006] 3) The confocal microscopy system is not easy to transplant to external field systems such as low temperature, magnetic field and electric field;

[0007] 4) A single NV color center found by confocal microscopy cannot be used without the confocal microscopy system;

[0008] 5) Since the focus of the confocal microscope system will drift due to various external factors such as temperature and interference, the positioning of a single NV color center will be unstable;

[0009] 6) Confocal microscopy can only be used to study one NV color center at the same time. A confocal microscope system can only correspond to one or a group of color centers. Once the color center is replaced, it is difficult to find the original color center.

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