András Dombi
Early Stage Researcher

Wigner Research Centre for Physics, Budapest, Hungary

Adademic Background

Between 2006 and 2009 I studied physics and informatics at Babes‐Bolyai University in Cluj‐Napoca, Romania, where I wrote my Bachelor’s degree diploma thesis about a walkie‐talkie like system, developed at the university, for measuring the speed of radio waves in air together with professor Dr. Zoltán Néda.

From 2009 until 2011 I studied computational physics at the same university. For my Master’s degree diploma thesis I studied the appearance and effects of crack formation and propagation in granular materials, with the help of computer simulations.

Beginning with September 2011, I started working at the Institute for Solid State Physics and Optics, Wigner Research Center for Physics, Hungarian Academy of Sciences, and I started my PhD studies at the Eötvös Lóránd University under the guidance of professor Dr. Peter Domokos.

Description of work

I will work on the theory of quantum nonlinear dynamics of one atom interacting with the multimode radiation field of a strongly coupled cavity, including the case when the atomic centre‐of‐mass is quantised. Beyond the interest in quantum nonlinear multimode optics, single atoms in cavities offer the possibility of simulating the so‐called superstrong coupling regime of cavity QED. This regime is reached when the light scatterer within the resonator has such a large reflectivity that the spatial mode structure of the empty cavity is significantly deformed, i.e., the material object realizes effectively a dynamically moving boundary condition. Such a scenario has only been reached with mirrors (vibrating membranes with reflection coating) or with many atom ensembles so far. Certain aspects of the unexplored quantum limit of the superstrong coupling regime can be addressed with single atoms in multimode cavity fields. Within the RISSPO group, I will consider this problem and will perform detailed calculations on the dynamics of single atoms moving in two‐, or a few‐mode cavity field.

Publications

Direct Measurement of the Speed of Radio Waves (in Hungarian)
András Dombi, Tunyagi Arthur, Néda Zoltán
Műszaki Szemle, 53, 3‐7 (2011)

Walkie-talkie measurements for the speed of radio waves in air
András Dombi, Arthur Tunyagi and Zoltán Néda
Phys. Educ. 48 80 (2013)

Scattering model description of cascaded cavity configurations
András Dombi and Peter Domokos
Phys. Scr. 2013 014018 (2013)

Optical bistability in strong-coupling cavity QED with a few atoms
András Dombi, András Vukics and Peter Domokos
J. Phys. B: At. Mol. Opt. Phys. 46 224010 (2013)

Fragmentation of drying paint layers
Katinka Bakos, András Dombi, Ferenc Járai-Szabó, and Zoltán Néda
AIP Conference Proceedings 1564, 205 (2013)