News

Andreev molecule in Nano Letters

Our colleagues at the BME Department of Physics created a novel artificial molecule in nano-sized electronic circuits, at extremely low temperatures. In natural molecules, electrons can tunnel between neighboring atoms. In this new, artificial, so-called Andreev molecule, the artificial atoms are cca. 1000-times larger than natural atoms, and the tunneling of electrons happens via a superconducting electrode. Interestingly, the superconducting electrode can absorb and re-emit pairs of electrons from and to the molecule This is a feature absent in usual molecules, altering the energy spectrum which was now measured by the BME researchers for the first time. The artificial atoms of the Andreev molecule are created in semiconducting nanowires from the group of Prof. Jesper Nygard (University of Copenhagen). This newly demonstrated artificial molecule is an important step in the development of long-lived quantum bits. 

 

Olivér Kürtössy, Zoltán Scherübl, Gergö Fülöp, István Endre Lukács, Thomas Kanne, Jesper Nygård, Péter Makk, and Szabolcs Csonka
Andreev Molecule in Parallel InAs Nanowires
Nano Letters, 2021

Wigner crystal, published in Nature

Harvard experimentalists discovered a coupled Wigner crystal in bilayer nanostructures, with important theory contribution from our Institute of Physics.

 

You Zhou, Jiho Sung, Elise Brutschea, Ilya Esterlis, Yao Wang, Giovanni Scuri, Ryan J. Gelly, Hoseok Heo, Takashi Taniguchi, Kenji Watanabe, Gergely Zaránd, Mikhail D. Lukin, Philip Kim, Eugene Demler & Hongkun Park
Bilayer Wigner crystals in a transition metal dichalcogenide heterostructure
Nature 595, 48 (2021)
https://www.nature.com/articles/s41586-021-03560-w

Momentum Grant for Péter Makk

Péter Makk, associate professor at the Institute of Physics and the Department of Physics, has won the Momentum Research Grant of the Hungarian Academy of Sciences. The research theme of the new group is Controlling synthetic correlated phases in van der Waals heterostructures. 

 

Announcement at the website of the Hungarian Academy of Sciences (MTA): https://mta.hu/mta_hirei/tizenot-nyertes-az-mta-lendulet-programjanak-id...

Quantum Lab launched

Research at the newly established Quantum Information National Laboratory (QNL) was officially launched on June 2, 2021. Head of consortium Péter Domokos (Wigner Research Centre for Physics) and project leaders of the consortium including Gergely Zaránd, head of the BME Institute of Physics, shared recent progress and the activities planned for the coming years.
 
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