[16p-WL1_301-1~9] Next-Generation Biomedical Applications: Pioneered by Magneto-Science and Medical-Engineering Integration

4:30 PM - 5:00 PM JST(7:30 AM - 8:00 AM UTC)

[16p-WL1_301-6] Spin Sensing in Biological Systems Using a Superconducting Qubit Magnetometer

〇Hiraku Toida¹ (1.NTT BRL)

Keywords:

superconductor,qubit,sensing

We developed a method to measure magnetization and electron spin resonance (ESR) spectra using a superconducting flux qubit as a highly sensitive magnetometer. The spatial resolution is on the micrometer scale, and the sensitivity reaches approximately 20 electron spins with 1 s integration. Using this magnetometer, we measured the magnetization of cultured neurons, demonstrated single-cell-level detection, and quantified the iron(III) content (~8 µg/g). Furthermore, ESR spectra acquired with a conventional ESR spectrometer identified iron(III) as the origin of the magnetization.