Workshop thematic map

Data needs and challenges for quantum dot devices automation

npj Quantum Information, Published online: 31 October 2024; doi:10.1038/s41534-024-00878-x Gate-defined quantum dots are a promising candidate system for realizing scalable, coupled qubit systems and serving as a fundamental building block for quantum computers. However, present-day […]

Quantum simulators show resilience to errors

Theorists at the Max Planck Institute of Quantum Optics have made a significant stride in the field of quantum computing. Their research addresses a long-standing question: can quantum computers really outperform classical computers in solving […]

Schematic representation of a spin-photon-based quantum processor consisting of six optically coupled quantum registers

Major development successes in diamond spin photon quantum computers

Lower cooling requirements, longer operating times, lower error rates: Quantum computers based on spin photons and diamond promise significant advantages over competing quantum computing technologies. The consortium of the BMBF project SPINNING coordinated by Fraunhofer […]

robust projective measurement through measuring code-inspired observables

Robust projective measurements through measuring code-inspired observables

npj Quantum Information, Published online: 26 October 2024; doi:10.1038/s41534-024-00904-y Robust projective measurements through measuring code-inspired observables Quantum measurements are ubiquitous in quantum information processing tasks, but errors can render their outputs unreliable. Here, researchers present […]

Photo (Paderborn University, Hennig/Mazhiqi): Scientists at Paderborn University have for the first time used high-performance computing (on the right in the picture the Paderborn supercomputer Noctua) to analyse a quantum photonics experiment on a large scale.

Quantum experiments and high-performance computing

Scientists have used high-performance computing at large scales to analyze a quantum photonics experiment. In specific terms, this involved the tomographic reconstruction of experimental data from a quantum detector. Read More Quantum Computers News — […]

Flux attachment for bosons on a lattice

Flux attachment provides a powerful conceptual framework for understanding certain forms of topological order, including most notably the fractional quantum Hall effect. Despite its ubiquitous use as a theoretical tool, directly realizing flux attachment in […]

New benchmark helps solve the hardest quantum problems

New benchmark helps solve the hardest quantum problems

Predicting the behavior of many interacting quantum particles is a complicated process but is key to harness quantum computing for real-world applications. Researchers have developed a method for comparing quantum algorithms and identifying which quantum […]

Roberto Morandotti. Credits : Josée Lecompte

Quantum research breakthrough uses synthetic dimensions to efficiently process quantum information

A new study opens the door to cutting-edge solutions that could contribute to the realization of a system capable of processing quantum information in a simple yet powerful way. The work presents a method for manipulating the photonic states of light in a never-before-seen way, offering greater control over the evolution of photon propagation. This control makes it possible to improve the detection and number of photon coincidences, as well as the efficiency of the system.

Schematic of error mitigation in qutrit circuits.

Extending the computational reach of a superconducting qutrit processor

npj Quantum Information, Published online: 14 October 2024; doi:10.1038/s41534-024-00892-z Extending the computational reach of a superconducting qutrit processor Quantum computing with qudits is an emerging approach that exploits a larger, more connected computational space, providing […]

Scaled gate Vs. multiple (multi-qubit) Clifford implementation of quantum gates.

Pseudo twirling mitigation of coherent errors in non-Clifford gates

npj Quantum Information, Published online: 11 October 2024; doi:10.1038/s41534-024-00889-8 Pseudo twirling mitigation of coherent errors in non-Clifford gates The conventional circuit paradigm, utilizing a small set of gates to construct arbitrary quantum circuits, is hindered […]

Visualization diagram of magnetic domains in a quantum antiferromagnet using nonreciprocal directional dichroism

Illuminating quantum magnets: Light unveils magnetic domains

Scientists have used light to visualize magnetic domains, and manipulated these regions using an electric field, in a quantum antiferromagnet. This method allows real-time observation of magnetic behaviors, paving the way for advancements in next-generation […]

Trinity College Dublin

Team uncovers a quantum Mpemba effect, with a host of ‘cool’ implications

Researchers have just described the existence of the paradoxical Mpemba effect within quantum systems. Initially investigating out of pure curiosity, the discovery has bridged the gap between Aristotle’s observations two millennia ago and modern-day understanding, and opened the door to a whole host of ‘cool’ — and ‘cooling’ — implications.

An AI tool called GNNOpt can accurately predict optical spectra based solely on crystal structures and speed up the development of photovoltaic and quantum materials. ©Nguyen Tuan Hung et al.

AI speeds up the discovery of energy and quantum materials

Unearthing new LEDs, solar cells, and photodetectors requires extensive knowledge surrounding the optical properties of materials. Calculating these takes time and resources. Yet researchers unveiled a new AI tool that can accurately, and crucially much faster than quantum simulations, for predicting optical properties.

Describing chaotic systems

Systems consisting of many small particles can be highly complex and chaotic – and yet some can still be described using simple theories. However, whether this also extends to the world of quantum physics has […]

The Gibbs state preparation algorithm for linear spin chains.

Gibbs state sampling via cluster expansions

npj Quantum Information, Published online: 04 October 2024; doi:10.1038/s41534-024-00887-w Gibbs state sampling via cluster expansions Gibbs states (i.e., thermal states) can be used for several applications such as quantum simulation, quantum machine learning, quantum optimization, […]

First Quantum Talents Symposium in Munich

The Quantum Talents Symposium Munich is a joint initiative of the Max Planck Institute of Quantum Optics (MPQ), the Munich Center for Quantum Science and Technology (MCQST), the International Max Planck Research School for Quantum […]