Publications

Group highlights

Singlet-Doublet Transitions of a Quantum Dot Josephson Junction Detected in a Transmon Circuit

Microwave spectroscopy of a hybrid superconductor-semiconductor transmon device is used to probe the ground-state parity of the Josephson junction quantum dot, in agreement with predictions of a single-impurity Anderson model with superconducting leads. Quasiparticle dynamics can be resolved accross the parity phase boundaries.

Arno Bargerbos, Marta Pita-Vidal, Rok Žitko, Jesús Ávila, Lukas J. Splitthoff, Lukas Grünhaupt, Jaap J. Wesdorp, Christian K. Andersen, Yu Liu, Leo P. Kouwenhoven, Ramón Aguado, Angela Kou, and Bernard van Heck

PRX Quantum 3, 030311 (2022)

Boosting the Performance of Quantum Annealers using Machine Learning

We introduce a novel error correcting approach for quantum annealers that uses machine learning to adjust the input Hamiltonian so as to maximize the probability of finding the solution. In our experiments, the method improves the performance of annealing by up to three orders of magnitude.

Jure Brence, Dragan Mihailović, Viktor V. Kabanov, Ljupčo Todorovski, Sašo Džeroski, and Jaka Vodeb 

Quantum Machine Intelligence 5 (2023)

Emission of correlated jets from a driven matter-wave soliton in a quasi-one-dimensional geometry

Tadej Mežnaršič, Rok Žitko, Tina Arh, Katja Gosar, Erik Zupanič, and Peter Jeglič

Phys. Rev. A 101, 031601(R) (2020)

Single-shot Stern-Gerlach magnetic gradiometer with an expanding cloud of cold cesium atoms

Katja Gosar, Tina Arh, Tadej Mežnaršič, Ivan Kvasič, Dušan Ponikvar, Tomaž Apih, Rainer Kaltenbaek, Rok Žitko, Erik Zupanič, Samo Beguš, and Peter Jeglič

Phys. Rev. A 103, 022611 (2021)

Excitations in a superconducting Coulombic energy gap

Juan Carlos Estrada Saldaña, Alexandros Vekris, Luka Pavešić, Peter Krogstrup, Rok Žitko, Kasper Grove-Rasmussen, Jesper Nygård

Nat Commun 13, 2243 (2022)

 

List of publications

Singlet-Doublet Transitions of a Quantum Dot Josephson Junction Detected in a Transmon Circuit
Arno Bargerbos, Marta Pita-Vidal, Rok Žitko, Jesús Ávila, Lukas J. Splitthoff, Lukas Grünhaupt, Jaap J. Wesdorp, Christian K. Andersen, Yu Liu, Leo P. Kouwenhoven, Ramón Aguado, Angela Kou, and Bernard van Heck
PRX Quantum 3, 030311 (2022)

Boosting the Performance of Quantum Annealers using Machine Learning
Jure Brence, Dragan Mihailović, Viktor V. Kabanov, Ljupčo Todorovski, Sašo Džeroski, and Jaka Vodeb 
Quantum Machine Intelligence 5 (2023)

Emission of correlated jets from a driven matter-wave soliton in a quasi-one-dimensional geometry
Tadej Mežnaršič, Rok Žitko, Tina Arh, Katja Gosar, Erik Zupanič, and Peter Jeglič
Phys. Rev. A 101, 031601(R) (2020)

Single-shot Stern-Gerlach magnetic gradiometer with an expanding cloud of cold cesium atoms
Katja Gosar, Tina Arh, Tadej Mežnaršič, Ivan Kvasič, Dušan Ponikvar, Tomaž Apih, Rainer Kaltenbaek, Rok Žitko, Erik Zupanič, Samo Beguš, and Peter Jeglič
Phys. Rev. A 103, 022611 (2021)

Excitations in a superconducting Coulombic energy gap
Juan Carlos Estrada Saldaña, Alexandros Vekris, Luka Pavešić, Peter Krogstrup, Rok Žitko, Kasper Grove-Rasmussen, Jesper Nygård
Nat Commun 13, 2243 (2022)