Mariia Matiushechkina

PhD student

Callinstr. 38, room 17

+49 511 762-17073

Mariia got her degree at M.V. Lomonosov Moscow State University in 2018, working under the supervision of Prof. Valery Mitrofanov in the group “Quantum measurements”. Her thesis on the investigation of the effect of electric field on the mechanical losses in silicon in cryogenic temperatures was motivated by the fact that the third generation of interferometric gravitational wave detectors considers to use silicon test masses and silicon suspension systems kept at cryogenic temperature (123K). Operating such a detector, the thermal expansion coefficient of silicon crosses zero, which leads to significant reduction of the thermo-elastic noise of the test masses. For this reason, other types of noise sources become relevant and limit the sensitivity of the detector.
In the beginning of 2019 Mariia joined the “Quantum Control” group as a new PhD student. Optomechanical systems in quantum noise cancellation schemes require fundamental investigations of the mechanical, electrical and optical properties of their components, with the prospect of resulting in better reduction of quantum noise in gravitational wave detectors. Due to this fact, her research involves the experimental and theoretical characterisation of (photonic crystal) membranes at room and cryogenic temperatures, as well as investigations into possible modifications of the membranes (e.g. application of different types of stress), and finally implementing this knowledge in ‘non-classical’ techniques, e.g. coherent quantum noise cancellation.