Quantum sensing offers the possibility of highly accurate temperature monitoring and magnetic and electric fields with nanometer adjustment. By looking at how these structures affect the energy level within the sensory molecule. However, the time adjustment of the standard quantum sensor methods was previously limited to microseconds due to the limited luminescence life. A new way to help refine the quantum sensor is needed.

Now, a team of researchers led by Tsukuba University has developed a new way to apply magnetic field measurements to a known quantum sensor system. Nitrogen-vacancy (NV) centers are specific defects in diamonds where a nitrogen atom and space replace two adjacent carbon atoms. The rotational state of the additional electron at this site can be read or used in conjunction with light pulses.

“For example, a poorly charged NV spin can be used as a quantum magnetometer with a system for reading everything, even at normal temperatures,” says lead author Ryosuke Sakurai. The team used the “anti-Cotton-Mouton” effect to test its method. The typical impact of Cotton-Mouton occurs when a flexible magnetic field creates a birefringence, which can convert polarized light into elliptical polarization. In this experiment, scientists did the opposite, using the light of different polarizations to create local magnetic controlled domains.

“With the nonlinear Opto-magnetic quantum sensor, it will be able to measure the local magnetic field, or spin currents, in advanced objects with high spatial and temporal precision,” senior author Muneaki Hase and colleagues Toshu An at the Japan Advanced Institute of Science. And Technology, by us. The team hopes this activity will help empower sensitive quantum spintronic computers, not just electric chargers like modern computers. Research from APL Photonics may also enable new experiments to detect dynamic changes in magnetic fields or possibly spins once and for all under real-time operating conditions.

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Alice Jane
Alice is the Chief Editor with relevant experience of three years, Alice has founded Galaxy Reporters. She has a keen interest in the field of science. She is the pillar behind the in-depth coverages of Science news. She has written several papers and high-level documentation.

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