ELFT HÍRADÓ

[mcsete AT physx.u-szeged.hu]

Seminar

Speaker: Professor Ádám Gali
group leader, Semiconductor Nanostructures Research Group
Theoretical Solid State Physics Department
Institute for Solid State Physics and Optics
HUN-REN Wigner Research Centre for Physics

Date: 3pm, 24, April (Wednesday) 2024
Location: SZTE TTIK FI, Budó auditorium & online
https://join.skype.com/OxTBV4tKR20a

The title of presentation: Solid state defect qubits

Short abstract of the presentation:
Solid-state defects acting as single photon sources and quantum bits  
are leading contenders in quantum technologies. Despite great efforts,  
not all the properties and behaviours of the presently known  
solid-state defect quantum bits are understood. Furthermore, various  
quantum technologies require novel solutions, thus new solid-state  
defect quantum bits should be explored to this end. These issues call  
to develop ab initio methods, which accurately yield the key  
parameters of solid-state defect quantum bits and vastly accelerate  
the identification of novel ones for a target quantum technology  
application. In this talk, a brief overview about the most recent  
methods will be shown with emphasizing the complex interplay of  
electron-phonon coupling and spin-orbit interaction in the intersystem  
crossing processes of the defects. In addition, we show coherent  
Rabi-oscillation of single electron spin from nitrogen-vacancy center  
in diamond as observed in the optically detected magnetic resonance  
laboratory of Adam Gali?s group. We demonstrate that the coherence  
time of the single electron spin coupled to a proximate carbon nuclear  
spin can be finely tuned by varying a small constant magnetic field  
that realizes a method for dc magnetometry quantum sensing.

Everyone is welcome to attend.

Dr. Mária Csete


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