Publications

Group highlights

Incommensurable matter-wave jets in quasi-1D geometry

Tadej Mežnaršič, Rok Žitko, Katja Gosar, Jure Pirman, Katja Arh, Matevž Jug, Erik Zupanič, Peter Jeglič

Communications Physics 8, 59 (2025)

Mbit/s-range alkali vapour spin noise quantum random number generators

Matija Koterle, Samo Beguš, Jure Pirman, Tadej Mežnaršič, Katja Gosar, Erik Zupanič, Rok Žitko, Peter Jeglič

EPJ Quantum Technology 11, 11 (2024)

Stirring the false vacuum via interacting quantized bubbles on a 5,564-qubit quantum annealer

We experimentally observe real-time quantized false-vacuum bubble nucleation and interactions using a 5,564-qubit superconducting quantum annealer, demonstrating coherent, dissipative-robust scaling laws that enable large-scale investigation of non-perturbative false-vacuum dynamics.

Jaka Vodeb, Jean-Yves Desaules, Andrew Hallam, Andrea Rava, Gregor Humar, Dennis Willsch, Fengping Jin, Madita Willsch, Kristel Michielsen, and Zlatko Papić

Nat. Phys. 21, 386–392 (2025)

Non-equilibrium quantum domain reconfiguration dynamics in a two-dimensional electronic crystal and a quantum annealer

We show that electronic domain reconfiguration in a quantum material crosses from thermal to noise-driven quantum dynamics and can be quantitatively reproduced by a superconducting quantum annealer with microscopically matched interactions and spectrally similar pink noise.

Jaka Vodeb, Michele Diego, Yevhenii Vaskivskyi, Leonard Logaric, Yaroslav Gerasimenko, Viktor Kabanov, Benjamin Lipovsek, Marko Topic, and Dragan Mihailovic

Nat Commun 15, 4836 (2024)

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)

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)

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)

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)

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)

 

List of publications

Incommensurable matter-wave jets in quasi-1D geometry
Tadej Mežnaršič, Rok Žitko, Katja Gosar, Jure Pirman, Katja Arh, Matevž Jug, Erik Zupanič, Peter Jeglič
Communications Physics 8, 59 (2025)

Mbit/s-range alkali vapour spin noise quantum random number generators
Matija Koterle, Samo Beguš, Jure Pirman, Tadej Mežnaršič, Katja Gosar, Erik Zupanič, Rok Žitko, Peter Jeglič
EPJ Quantum Technology 11, 11 (2024)

Stirring the false vacuum via interacting quantized bubbles on a 5,564-qubit quantum annealer
Jaka Vodeb, Jean-Yves Desaules, Andrew Hallam, Andrea Rava, Gregor Humar, Dennis Willsch, Fengping Jin, Madita Willsch, Kristel Michielsen, and Zlatko Papić
Nat. Phys. 21, 386–392 (2025)

Non-equilibrium quantum domain reconfiguration dynamics in a two-dimensional electronic crystal and a quantum annealer
Jaka Vodeb, Michele Diego, Yevhenii Vaskivskyi, Leonard Logaric, Yaroslav Gerasimenko, Viktor Kabanov, Benjamin Lipovsek, Marko Topic, and Dragan Mihailovic
Nat Commun 15, 4836 (2024)

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)

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)

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)

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)

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)