Diamond NV color center fluorescence high-efficiency collection device

A collection device and diamond technology are applied in the field of fluorescence detection of diamond NV color centers, which can solve the problems of low fluorescence collection efficiency of millimeter-scale diamond NV color centers, and achieve reduced light escape, high-efficiency optical magnetic resonance, and high-efficiency Aggregate effect

Active Publication Date: 2020-09-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology

[0005] Aiming at the problem of low fluorescence collection efficiency of existing millimeter-scale diamond NV color centers in the background technology, the purpose of the present invention is to provide a high-efficiency collection device for diamond NV color center fluorescence

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  • Diamond NV color center fluorescence high-efficiency collection device
  • Diamond NV color center fluorescence high-efficiency collection device
  • Diamond NV color center fluorescence high-efficiency collection device

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[0027] In order to make the purpose, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the implementation methods and accompanying drawings.

[0028] A diamond NV color center fluorescent high-efficiency collection device, such as figure 1 As shown, the device is divided into six parts, which are the pump light path, the probe light path, the fluorescence reflection device, the diamond NV color center, the fluorescence detection and coupling device, and the microwave coupling antenna; For detection, two lasers are needed to excite the diamond NV color center. One path is the excitation from the traditional ground state to the excited state, which is called the pump light path, which generates 532nm laser light to realize the excitation of the diamond NV color center from the ground state to the excited state. Under this condition, the diamond NV color center mainly produces 63...

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Abstract

The invention provides a diamond NV color center fluorescence high-efficiency collection device, belongs to the field of diamond NV color center fluorescence detection, and is expected to be applied to various quantum detection devices such as a diamond NV color center-based quantum computer, a gravity gradiometer, an accelerometer, a thermometer and a single-photon imager. According to the technical scheme, in-phase double collection of red fluorescence and far infrared fluorescence is adopted, and the fluorescence collection proportion is greatly increased; fluorescence excited by a diamondNV color center is reflected by a parabolic reflector, parallel focusing is performed by a Fresnel plane lens, and under the combined action of a shading cylinder, light dissipation is reduced to themaximum extent, and efficient gathering of the fluorescence is realized; the axial helical antenna with high directivity and high gain is adopted to provide high-efficiency microwave excitation, so that high-efficiency optomagnetic resonance is realized, and the intensity of red fluorescence generated by the diamond NV color center is increased.

Description

technical field [0001] The invention belongs to the field of fluorescence detection of diamond NV color centers, and in particular relates to a high-efficiency collection device for fluorescence of diamond NV color centers, which is expected to be applied to quantum computers, gravity gradiometers, accelerometers, thermometers and On various quantum detection devices such as single photon imagers. Background technique [0002] The diamond NV color center (Nitrogen-vacancy center) is a special diamond lattice defect structure. Two carbon atoms on one side of the diamond regular tetrahedron are replaced by a nitrogen atom and a hole respectively. The formed diamond NV The color center has stable optical characteristics, electron spin characteristics and ideal solid-state qubits at room temperature, and can be applied to quantum storage, quantum computers, single-molecule imaging, high-precision quantum gyroscopes, high-precision quantum accelerometers and high-precision Gravi...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/64G01J3/44
CPCG01N21/6489G01J3/4406
Inventor 陈鹏羊恺
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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