Liubov Sirkina
About me
I have recieved my PhD in Theoretical Physics within the condensed matter and photonics group, School of Physics and Astronomy at Cardiff University (UK), supervised by Dr Egor Muljarov and Prof Wolfgang Langbein, where I studied quantum dot systems using a path-integral–based approach.
In 2025 I have joined the Metelmann group and I am now affiliated with the University of Strasbourg (France). I am currently studying cavity magnomechanics, in which collective excitations of magnetization couple both to a magnet's elastic vibrations and to the microwave field confined within a cavity.
During my PhD work I studied the effect of phonon-induced dephasing on exciton coherent coupling in quantum dots and cavity quantum electrodynamics. First part of my work has focused on the nonlinear optical response of an exciton-cavity system, where I studied the effect of phonons on coherent light-matter coupling and its implications for two-dimensional optical spectroscopy. I have explored the non-Markovian behaviour, which arises due to the interaction of exciton with longitudinal acoustic phonons in the presence of optical non-linearity and the manifestations of this behaviour in the four-wave mixing signal. I have also studied coherence and Förster transfer between coupled quantum dots in a common phonon environment.
Education
PhD in Theoretical Physics "Coherent processes in quantum dot systems" (2019-2024), Cardiff University.
MPhys in Theoretical Physics (2015-2019), University of St Andrews.
Conference Participation
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L.S. Sirkina, L.M.J. Hall, A. Morreau, W. Langbein and E.A. Muljarov:
“Controlled dephasing and Förster resonance energy transfer in coupled quantum dots interacting with a shared environment”,
Dynamics of Complex Quantum Systems (CCPQ), Windsor (July 2024).
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L.S. Sirkina, L.M.J. Hall, A. Morreau, W. Langbein and E.A. Muljarov:
"Förster transfer between coupled quantum dots in a common phonon environment,"
OECS 18, Lecce, Italy 2023.
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L.S. Sirkina and E.A. Muljarov:
"Impact of the phonon environment on the nonlinear quantum-dot cavity QED,"
OECS 17, Dortmund, Germany 2021.
Training
"Physics by the Lake" summer school in theoretical condensed matter physics 2022, Stirling, Scotland.
"Fundamentals of Accelerated Computing with CUDA Python" workshop 2021.
Awards
Bessie Jones bursary prize for outstanding postgraduate research at Cardiff in 2023.
Cardiff physics department poster prize in 2023.
Literature Club
During my PhD I was organising informal meetings for a relaxed group discussion of scientific literature. For more information visit the literature club webpage.
