Publication highlights

Unlocking the Potential of Transmon Qubits: New Research on Quasiparticle Effects   A recent study from the Ando Lab at the University of Cologne and the Catelani group in Jülich sheds light on the magnetic field dependence of quasiparticle tunneling in aluminum...

Trebst Group Develops Robust Protocol for Surface Code Teleportation   A new protocol for teleporting surface codes could pave the way for advancements in fault-tolerant quantum computing, bringing many-qubit teleportation closer to reality.   The concept of...

Advancing Quantum Error Correction: New Threshold Estimation Method   A joint study between M. Müller's and S. Diehl's groups appears today in Physical Review Research introducing a novel method for accurately estimating error thresholds in quantum error...

Quantum Error Correction: Insights from Quantum Cellular Automata   A new study published in Physical Review Letters shows how quantum cellular automata can autonomously correct quantum errors, offering a novel approach for building scalable quantum computers....

Investigating Dimensionality Effects in Photon Gases   Researchers from the University of Bonn and the University of Kaiserslautern-Landau (RPTU) explore the behavior of photon gases, revealing new insights into how dimensionality influences phase transitions....

Beyond Thermalization: New Insights into Quantum System Dynamics   ML4Q professor, David Luitz, contributes to a study on quantum system dynamics revealing unique correlations in chaotic quantum systems that are essential for understanding the nature of quantum...

Improving Quantum Error Correction Performance with Steane's Scheme   Joint work between the Müller group and the trapped-ion quantum computing group at Innsbruck successfully implements a scheme by Steane that enhances the performance of quantum error...

Classical Chaos in Quantum Computers Reviewed   ML4Q members DiVincenzo, Trebst and Altland highlight in this review how classical chaotic behavior can influence quantum systems and offer new ways to understand and control this unpredictability.   As quantum...

It is widely recognized that magnetization and superconductivity are typically mutually exclusive. However, the study by Uday and co-workers provides compelling evidence for the presence of superconducting correlation within the chiral edge mode of proximitized QAH...

Quantum computers to test for the first time Jarzynski’s equality for many interacting particles Joint efforts including the Luitz (Bonn) and Rizzi (Cologne/Jülich) Groups yield results published in Physical Review X earlier this month   Statistical mechanics is...

Qubit fractionalization and emergent Majorana liquid in the honeycomb Floquet code induced by coherent errors and weak measurements   Use the slider to read the story of this paper as Simon Trebst summarizes it in 6 images:   In quantum error correction,...

ML4Q associated member and Independence Grant Fellow, Frederico Grasselli (Bruss group, HHU Düsseldorf) co-authored a paper which was published on November 1st in PRX Quantum. In the joint work, the authors explore the security of discrete- and continuous-variable QKD...

Michael Buchhold co-authors a Nature Physics paper on a Hubbard exciton fluid in Mott insulators   A Hubbard exciton fluid in a photo-doped antiferromagnetic Mott insulator is the title of a paper arising from a cooperation between ML4Q member, Michael Buchhold...

Today on arXiv: Joint work by the Trebst group together with IBM Quantum on Nishimori transition  Update: The preprint was published on November 15 in Phys. Rev. Lett.Nishimori’s Cat: Stable Long-Range Entanglement from Finite-Depth Unitaries and Weak...

ML4Q associated member and Independence Grant Fellow, Frederico Grasselli (Bruss group, HHU Düsseldorf) co-authored a paper which was published a few days ago in npj Quantum Information. The publication is a collaboration with Alexander Pickston, Joseph Ho,...

Hans Kroha co-authors a Nature Physics article on quantum phase transitions   [according to the press release of the University of Bonn]   Many substances change their properties when they are cooled below a certain critical temperature. Such a phase...

Preprint from Ando group recommended in the Journal Club for Condensed Matter Physics The preprint entitled "Induced superconducting correlations in the quantum anomalous hall insulator" by Anjana Uday et al. was recommended for discussion in the Journal Club for...

New work on quantum dynamics of regularized superconducting circuits     Building a universal quantum computer is a challenging task because physical quantum bits, or qubits, are imperfect. The pursuit of novel qubit designs, which strive for tailored...

We reported one year ago about the successful research conducted in the ML4Q groups of Simon Trebst, Alex Altland and David DiVincenzo which analyzed cutting edge device structures to demonstrate that some of them are indeed operating dangerously close to a threshold...

Near perfect particle-hole symmetry in graphene quantum dots   Researchers at RWTH Aachen University and Forschungszentrum Jülich have uncovered important characteristics of double quantum dots in bilayer graphene, an increasingly promising material for possible...

Cross-Site Paper on Statistical Majorana Bound State Spectroscopy   The groups of Fabian Hassler (RWTH) and Reinhold Egger (HHU Düsseldorf) have been cooperating on several projects to theoretically investigate signatures of Majorana zero modes that are...

In a collaboration with Enrique Rico and Enrique Solano (Department of Physical Chemistry, University of the Basque Country), Martin Weitz recently published the work of his group on quantum Rabi dynamics of trapped ions. The coupling of a two-level system with an...

Work by the group of ML4Q member Beata Kardynal was recently published in Nanotechnology. The publication reports on results obtained in a study which investigates Gallium deposition amount prior to In droplet epitaxy and its effect on the formation of a wetting...