Welcome to the Chair of Precision Experiments at Extreme Conditions

Our research deals with experiments that should help to understand properties of the early Universe. We currently focus on the nature of the excess of matter versus antimatter. In most scenarios that describe this so-called baryogenesis, new sources of broken symmetries in the early Universe are required. Electric dipole moments (EDM) of fundamental quantum systems are interesting systems to investigate such new sources of CP (or T) violation in the baryon-sector, beyond the Standard Model of particle physics (SM). Experiments in this field are almost table-top scale, but are nevertheless probing physics at or beyond the reach of the LHC. 

 

We apply the techniques from such fundamental experiments and just start setting up a new lab for low magnetic field technology, where we develop sensors and experimental apparatus to ultimately measure brain magnetic fields in a non-invasive way, in particular difficult to address aspects like signals related to motion of limbs, as well as fetal heart and brain signals. We are also involved in a variety of applications where small and stable magnetic fields are required in fundamental physics, e.g. a cold atom experiment in space and the search for neutron-antineutron oscillations at the European Spallation Source.

 

BACHELOR THESIS:

A nonmagnetic magnetic field mapping robot

We are looking for a student who can build a highly non-magnetic robot to map magnetic fields with < 100 pT inhomogeneity over 50 cm cubed.

Such a device is needed to establish the base line to measure electric dipole moments, as wells as to build brain-computer interfaces using magnetometer technology.

Although this sounds simple, this has not been achieved anywhere before! With some new ideas and creativity, one has to evaluate systems to measure the robot's alignment using e.g. laser or gyroscopic methods and calibration mechanisms - with the boundary condition that all needs to be non-magnetic at the Piko-tesla level. We have already started and got some first experience. 

If you like a challenge with a fundamentally important goal but at the same time like to work hands-on, contact stefan.stuiber@tum.de

 

Multi-pixel magnetic imaging using MEMS accelerometers and gyroscopes

We want to investigate if commercial MEMS based devices can be adapted to build cheap precision magnetometers. Once successful, we are interested in scaling the system and ultimately build the first megapixel magnetic camera.

We are looking for a student to calculate the behavior of such a system, estimate its sensitivity and build a manipulation device to modify MEMS oscillators and attach magnets and feedback coils.

Please contact peter.fierlinger@tum.de if you are interested!

 

BACHELOR/MASTER THESIS:

Characterization of a non-magnetic optical atomic magnetometer array

Our group is actively developing optical atomic magnetometers, a type of sensors using light-atom interactions to detect magnetic fields.This approach, sitting on the junction of laser-optics, quantum-optics and atom-physics, offer a wide range of possibilities for undergraduate and graduate students, from theoretical approaches to practical experiments.

The current in-house build sensor is one of the most stable and sensitiv sensors of its type, reaching stabilities of 150fT in the minute range while a new generation of sensor and expanding the setup to a mulit-sensor array is already projected.

If you are interested or want learn more on this topic - feel free to contact martin.rosner@tum.de!

 

MASTER THESIS:

Detection of high-field seeking ultra-cold neutron spin states

We currently investigate a new idea to detect trapped ultra-cold neutrons in a new way, which avoids most issues that limited progress in the field for many years. If successful, our new method will be a game changer. If you like to learn about neutron technology, superconductivity and experiments with neutron reflectometry, contact peter.fierlinger@tum.de and learn about which possibilities we have for a cool thesis with potentially a lot of impact and visibility!

 

The above mentioned topics are examples of many possibilities we do currently have available. If you are interested, don't hesistate to contact us! We work with the world's smallest magnetic field, high precision sensors, laser polarized noble gases, superconducting sensors and trapped ultra-cold neutrons. Our experiments are performed at TUM, the FRM-II and the ILL (Grenoble), WIPP (New Mexico) and PTB. We are continuously looking for motivated students, diploma or PhD students to participate in our lab. If you are interested just visit us or contact Peter Fierlinger or the researcher who works on the project you are interested in.