公开(公告)号：US20210196177A1

公开(公告)日：2021-07-01

申请号：US17138696

申请日：2020-12-30

Applicant: X Development LLC

Inventor： Guillaume Verdon-Akzam ,  Xudong Lv ,  Stefan Leichenauer

IPC: A61B5/245 ,  A61B5/00

Abstract: A magnetoencephalography apparatus includes: a lead configured to be secured to a user's head; a first magnetic field sensor attached to the lead, the first magnetic field sensor including a substrate, and an electron spin defect layer on the substrate, the electron spin defect layer including at least one lattice defect, in which a first spin energy level of the at least one lattice defect splits upon exposure to a microwave; and cabling, in which the cabling includes a first microwave transmission line arranged to provide a first microwave field to the electron spin defect layer and in which the cabling includes an optical fiber arranged to provide, from a first end of the optical fiber, a first light signal to the electron spin defect layer and to receive, at the first end of the optical fiber, a second light signal emitted by the electron spin defect layer.