Anton Potočnik - research website

August 19, 2022
Research

Path toward manufacturable superconducting qubits with relaxation times exceeding 0.1 ms

We are excited to share our results on large-scale fabrication compatible integration of superconducting Transmon qubits. With, so called, overlay Josephson junction approach we were able to fabricate in a fully fab-compatible way qubits with close to state-of-the-art coherence times. We also found that coherence times up to 0.1ms are not limited by losses inside…

March 8, 2018
Research

Studying light-harvesting models with superconducting circuits

Superconducting circuits are not useful only for building a universal quantum computer or exploring quantum optics, but also for example for studying light-harvesting models. In our recent paper A Potočnik et al., Nat. Commun. 9, 904 (2018) we have experimentally demonstrated how can superconducting circuits be used to study models of energy transport in disordered…

March 30, 2014
Research

Size and Symmetry of Superconducting gap in the fcc Cs₃C₆₀

We recently published our first high-pressure NMR results on f.c.c. Cs3C60 polymorph. We found some new exciting superconducting properties close to the metal-to-insulator boundary – the superconducting gap increases close to the boundary! Found out more in A. Potočnik, et al. Sci. Rep. 4, 4265, 2014.

February 12, 2014
Research

Anvil-type NMR cell

We just started testing our new anvil-type high-pressure cell for the NMR experiment. With the tungsten-carbide anvils we expect to reach pressures up to 4 GPa.

July 1, 2013
Research

Unconventional superconductivity of A₃C₆₀

We are studying normal-state and superconducting properties of hyper-expanded A3C60 (A = K, Rb, Cs). We have shown that these materials resemble unconventional superconductors like cuprates. Intense research of normal-state and superconducting properties of these materials close to the metal-to-insulator transition is in progress. A.Y. Ganin, et al. Nature 2010.

July 1, 2013
Research

Jahn-Teller effect in alkali-doped fullerenes

We are studying Jahn-Teller (JT) effect in alkali-doped fullerene materials like RbxCs3-xC60, and MAK3C60 (MA = CH3NH2). We have shown that Jahn-Teller effect is completely dominated by strong steric effects in MAK3C60 (A. Potočnik, et al. PRB 2012).

July 1, 2013
Research

High pressure EPR and NMR experiments

We developed high-hydrostatic pressure probes for EPR (X-band) and NMR experiments. Our clamp-type cells can continuously reach up to 1.2 GPa and 2.5 GPa for EPR and NMR experiments, respectively. EPR high-pressure cell allows also measurements with pulse techniques. Anvil-type cells for achieving even higher pressures are currently being developed.