Project Details
Projekt
Setup for Quantum Sensing with color defects in solids
Subject Area
Condensed Matter Physics
Term
Funded in 2021
Project identifier
Deutsche Forschungsgemeinschaft (DFG) - Project number 462567933
The research focus of my group is in the field of quantum sensing with color defects in solids. We are mainly using for our research projects as quantum system the Nitrogen-Vacancy-Center in diamond. There are two projects in the field of quantum sensing planed for the next four years.The first project we will focus on determining the state of charge from battery cells which are used in electrical cars. In the state of the art Hall-Sensors and Smart-Shunt-Sensors are used to measure the discharge current of batteries. The dynamic measurement range of the discharge current which needs to be covered by these technologies is in the range of µA up to 2500 A with a maximum measurement error of 3,75 %. This inaccuracy leads to an average error of ± 5 % in determining the state of charge from battery cells in electrical cars. Due to this error is a portion of the battery charge reserved and the maximum range of an electrical car limited. This problem can be solved in using the Nitrogen-Vacancy-Center as a quantum sensor in determining the discharge current via integration of the resulting magnetic field. The Nitrogen-Vacancy-Center is a highly sensitive magnetic field sensor which can precisely measure weak fields. This property should be utilized in this research project to measure the discharge current by a factor of 1000 more precisely as in the state of the art. The second project is focusing on the field of medicine and biology. One of the biggest challenges of our society is the treatment of cancer diseases. There are three methods at the moment used in the field of neurosurgery: -Magnetic Resonance Imaging -Fluorescence spectroscopy -Pathological diagnosticsThe disadvantage of these methods is that they don’t offer an In-Vivo-Live-Information to distinguish tissues during a surgery. This indicates that a surgeon needs to interrupt the surgery and check with one of the methods above the tissue condition. Furthermore the methods above do not have the sensitivity to visualize small tissue remnants in the range of below one micrometer. As a result the surgeon is forced to cut out healthy tissues to make sure that there is no cancer traces left. The Nitrogen-Vacancy -Center in diamond can offer here as a quantum system a solution for this problem. Due to the capability of the Nano-MRI function is the Nitrogen-Vacancy -Center capable of detecting smallest pieces of cancer tissues. Additionally the Nitrogen-Vacancy -Center can be used as an In-Vivo-Live tool during a surgery to visualize cancer tissues.
DFG Programme
Major Research Instrumentation
Major Instrumentation
Messplatz zur Quantensensorik mit Farbzentren im Festkörper
Instrumentation Group
5040 Spezielle Mikroskope (außer 500-503)
Applicant Institution
Friedrich-Alexander-Universität Erlangen-Nürnberg
