2026 年 69 巻 2 号 p. 62-67
The NV center in diamond has been attracting attention from the viewpoint of the application of ultrasensitive sensors and quantum information devices. One of the most significant properties is that the electron spin of the NV center in diamond exhibits the longest spin coherence time at room temperature among solid-state electron spin systems, which is crucial for achieving high sensitivity. This paper describes the basics of diamond-based quantum sensors and our recent research.