Combined Current Density and Temperature Mapping using a Quantum Temperature Sensor
Combined Current Density and Temperature Mapping using a Quantum Temperature Sensor
Monday, October 5, 2026: 11:30 AM
Summary:
Quantum Sensors based on Nitrogen Vacancy Centres offer a broad range of functionality, going significantly beyond high resolution current density imaging. Here we demonstrate the simultaneous mapping of both current density and temperature on a platinum wire. By measuring all eight resonances of a multi-NV scanning probe, we extract both the vector magnetic field and temperature shift with high mutual isolation and sub optical wavelength resolution. This combination enables, for example, localized cross correlation of points of high current flow with thermal hot spots, providing experimental data for processes that are typically only studied in simulations.
Quantum Sensors based on Nitrogen Vacancy Centres offer a broad range of functionality, going significantly beyond high resolution current density imaging. Here we demonstrate the simultaneous mapping of both current density and temperature on a platinum wire. By measuring all eight resonances of a multi-NV scanning probe, we extract both the vector magnetic field and temperature shift with high mutual isolation and sub optical wavelength resolution. This combination enables, for example, localized cross correlation of points of high current flow with thermal hot spots, providing experimental data for processes that are typically only studied in simulations.