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Szabolcs Csonka

project leader
Faculty of Natural Sciences, Budapest University of Technology

Szabolcs Csonka is an associate professor of the Department of Physics, BME and the head of the MTA-BME Nanoelectronics Momentum research group. His research group focuses on the development and investigation of various nanocircuits, which are dominated by quantum mechanical phenomena. Circuits are developed from different nanostructures, like 1D semiconductor nanowires, 2D van der Waals structures or giant Rashba spin-orbit materials. The nanostructures are integrated into hybrid nanocircuits, where superconductor and/or ferromagnetic correlations are present. The circuits are investigated at ultra-low temperature in magnetic field with dc and microwave excitations. He fabricated the first Cooper-pair splitter device, which allows to produce spatially separated spin entangled electron pairs. Furthermore he has several highly acknowledged results on the spectra of superconductor-artificial atom hybrids, which could lead to building blocks of novel topological quantum computers. He has been the coordinator of EU research networks (QuantERA), received ERC Starting grant (2010), Talentum award (2012), Zoltán Gyulai prize (2016), MTA Physics prize (2020). 

Selected publications:

Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field
Scherübl Z, Fülöp G, Moca CP, Gramich J, Baumgartner A, Makk P, Elalaily T, Schönenberger C, Nygård J, Zaránd G, Csonka S
Nature Communications 11: (1) 1834, (2020)

Electrically Controlled Spin Injection from Giant Rashba Spin–Orbit Conductor BiTeBr
Kovács-Krausz Z, Hoque AM, Makk P, …,  Lukács IE, Taniguchi T, Watanabe K, Dash SP, Csonka S
Nano Letters 20, 7 pp. 4782-4791., (2020)

Observation of spin–orbit coupling induced Weyl points in a two electron double quantum dot
Scherübl Z, Pályi A, Frank G, Lukács IE, Fülöp G, Fülöp B, Nygård J, Watanabe K, Taniguchi T, Zaránd G, Csonka S,
Nature, Communications in Physics 2: 108, (2019)

Ferromagnetic proximity effect in a ferromagnet-quantum-dot-superconductor device
Hofstetter L, Geresdi A, Aagesen M, Nygard J, Schönenberger C, Csonka S
Physical Review Letters 104: (24) 246804, (2010)

Cooper pair splitter realized in a two quantum-dot Y-junction,
Hofstetter L, Csonka S, Nygard J, Schonenberger C,
Nature 461,  960, (2009)

 

Projects

Semiconductor-superconductor hybrid qubits
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Research fields

  • Realization of a quantum communication network
  • Elementary building blocks of quantum information
  • Quantum computation and simulating quantum systems

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