Non-magnetic temperature control system of solid-state atomic spin sensor

Abstract

The invention relates to the field of quantum sensing and particularly relates to a non-magnetic temperature control system of a solid-state atomic spin sensor. The system comprises a diamond substrate. The diamond substrate is provided with a diamond NV color-center waveguide (4). The diamond substrate is further provided with a porous magnetic PDMS film (3) configured to cover the diamond NV color-center waveguide (4). The two sides of the lower surface of the diamond substrate are provided with a micro-strip antenna array (2). The micro-strip antenna array (2) is connected with a microwave source. According to the technical scheme of the invention, a nitrogen-doped diamond structure, larger than 1018 cm<-1> in concentration, is prepared by adopting the MPCVD magneto-electric restraint method, and a diamond color-center structure is prepared by adopting the micro-nano processing technology. Therefore, the excitation and fluorescence collection of the NV color-center structure are realized. Meanwhile, the coplanar manufacturing of a microwave antenna is realized in combination with the electron beam processing method. Moreover, the high signal-to-noise ratio detection of magnetic variation signals is carried out by adopting the time sequence control method, so that the effect of a temperature-modulated magnetic field is realized. The magnetic noise is effectively inhibited, and the purpose of non-magnetic temperature control is achieved.

Description

technical field [0001] The invention relates to the field of quantum sensing, in particular to a non-magnetic temperature control system based on a diamond nitrogen vacancy color center. Background technique [0002] In recent years, with the continuous development of atomic physics and quantum physics technology, precision physical measurement technology has reached the limit of traditional measurement technology. Based on the Larmor precession magnetic resonance effect under the action of atomic level magnetic field, the measurement of physical quantities is gradually approaching the theoretical limit level. However, the basic structural units of atoms and quantum can show ultra-high signal-to-noise ratio in low-temperature environment. As the temperature rises, structures such as electrons and photons become active, resulting in a serious decline in the signal-to-noise ratio of physical measurements. At the same time, for hot atoms The atomic interference of technology an...

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Problems solved by technology

[0003] However, conventional temperature control technologies mostly use electric heating, laser heating and other technologies. Serious magnetic noise is generated during the temperature control process, which will inevitably cause the second-order Zeeman effect at the atomic energy level, introduce phase noise, and cause the measurement mechanism based on the atomic interference effect. The fluctuation of atomic coherence leads to the decrease of test sensitivity. Therefore, in response to the application and development needs of ultra-high-precision physical measurement technology of quantum technology, non-magnetic temperature technology is urgently needed to continuously improve the ability of quantum technology to measure physical quantities.

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