Nanoscale microwave imaging with a single electron spin in diamond. (3rd November 2015)

• Record Type: Journal Article
• Authors: Appel, Patrick; Ganzhorn, Marc; Neu, Elke; Maletinsky, Patrick
• Is Part Of: New journal of physics. Volume 17:Number 11(2015:Nov.)
• Publication Date: 2015-11-03
• Subjects: microwave imaging -- nanoscale magnetic field sensing -- nitrogen vacancy center -- diamond; Physics -- Periodicals; Physics; Periodicals; 530.05
• DOI: 10.1088/1367-2630/17/11/112001
• Languages: English
• ISSNs: 1367-2630

Abstract

Abstract: We report on imaging of microwave (MW) magnetic fields using a magnetometer based on the electron spin of a nitrogen vacancy (NV) center in diamond. We quantitatively image the magnetic field generated by high frequency (GHz) MW current with nanoscale resolution using a scanning probe technique. Together with a shot noise limited MW magnetic field sensitivity of 680 nT Hz −1/2 our room temperature experiments establish the NV center as a versatile and high performance tool for MW imaging, which furthermore offers polarization selectivity and broadband capabilities. As a first application of this scanning MW detector, we image the MW stray field around a stripline structure and thereby locally determine the MW current density with a MW current sensitivity of a few nA Hz −1/2 .