Publications

We benchmark quantum, classical, and hybrid optimisation methods on 139 Max-Cut instances with up to 10,000 nodes, identifying their solution-quality and computation-time trade-offs.

Jaka Vodeb, Vid Eržen, Timotej Hrga, and Janez Povh

Quantum Information Processing 25, 240 (2026)

We show how electron interactions and spin–orbit coupling make Andreev pair qubits sensitive to magnetic fluctuations, revealing implications for qubit coherence and opportunities for quantum control.

Teodor Iličin and Rok Žitko

SciPost Physics 20, 147 (2026)

Figure 1, Iličin and Žitko · CC BY 4.0

We propose a compact entangled-photon source using two nonlinear crystals inside a single optical cavity, balancing narrow bandwidth, entanglement quality, and compatibility with quantum memories.

Žiga Pušavec, Lara Ulčakar, and Rainer Kaltenbaek

Physical Review A 111, 043707 (2025)

Figure 1, Pušavec, Ulčakar, and Kaltenbaek · CC BY 4.0

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

Communications Physics 8, 59 (2025)

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

EPJ Quantum Technology 11, 11 (2024)

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)

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)

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)

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)

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

Nat Commun 13, 2243 (2022)

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)

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

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