Description

Planned research - Applications of Coherently Prepared Media

Positions to be opened: 1 postdoc, 1 MSc student

Many important applications of CPM both for fundamental and applied problems depend on the ability to measure minute magnetic fields and their variations. Such measurements reveal magnetic activity of living organisms (biomagnetism) and hence can be used for medical diagnostics (magnetic resonance imaging), archeological surveys , electronics (magnetic disks), etc. In the domain of fundamental research, for testing the existing physical theories as well as verification of new models. Accurate magnetic sensors are vital for monitoring the Earth magnetic field and all its anomalies, either the natural ones or the ones caused by man's activity. For instance, there may be used for searches of natural resources or localization of submarine vessels or weapons.

For these reason we start our practical application program concentrating on magnetometric applications of CPM. Creation of CPM in specially prepared cells containing atomic vapors at room temperatures allowed already ultra-precise measurements of magnetic fields in a very wide range of intensities. We have recently demonstrated magnetometric sensitivity of ~10-14 T/Hz1/2 in a range of 10-4 T. That yields relative sensitivity at the level of 10-10, which is unreachable with any other magnetometric method.

Our project will aim at developing practical applications of CPM for measurements of the magnetic fields comparable to the Earth field. The physical background for such applications has been laid by our earlier work. Development of the practical applications will require designing of novel apparatus, e.g. for laser frequency stabilization, fast light modulation, and signal detection. These challenges will require skilled and creative postdoc researcher. Adapting the existing setup for measurements in unshielded environment and preparation of field measurements with the magnetometer will be the task for one MSc student.

This task will require involvement of one postdoc and one MSc student.

We will cooperate on this subject with the colleagues from Belgrade (B. Jelenkovic), Heraklion (I. Kominis), and Riga (M. Auzinsh).