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 […]
npj Quantum Information, Published online: 26 October 2024; doi:10.1038/s41534-024-00891-0 Extending radiowave frequency detection range with dressed states of solid-state spin ensembles Quantum sensors using solid-state spin defects excel in the detection of radiofrequency (RF) fields, […]
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 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 […]
Hole-based spin qubits in strained planar germanium quantum wells have received considerable attention due to their favorable properties and remarkable experimental progress. The sizeable spin-orbit interaction in this structure allows for efficient qubit operations with […]
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.
A paper has solved a major hurdle facing researchers working with diamond by creating a novel way of bonding diamonds directly to materials that integrate easily with either quantum or conventional electronics. With this technique, […]
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 […]
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 […]
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 […]
Researchers have developed and demonstrated a technique that allows them to engineer a class of materials called layered hybrid perovskites (LHPs) down to the atomic level, which dictates precisely how the materials convert electrical charge […]
npj Quantum Information, Published online: 10 October 2024; doi:10.1038/s41534-024-00895-w Generalised Kochen–Specker theorem for finite non-deterministic outcome assignments The Kochen–Specker (KS) theorem is a cornerstone result in quantum foundations, establishing that quantum correlations in Hilbert spaces […]
A research team has devised a unique method to observe changes in materials at the atomic level. The technique opens new avenues for understanding and developing advanced materials for quantum computing and electronics.
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.
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.
How well can multiple incompatible observables be implemented by a single measurement? This is a fundamental problem in quantum mechanics with wide implications for the performance optimization of numerous tasks in quantum information science. While […]
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 […]
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, […]
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 […]
The post Spin qubits go trampolining appeared first on QuTech. Researchers at QuTech developed somersaulting spin qubits for universal quantum logic. This achievement may enable efficient control of large semiconductor qubit arrays. The research group […]
Researchers have studied nonequilibrium quantum dynamics of spin chains by employing principal component analysis (PCA) on data sets of wave function snapshots and examined how information propagates within these data sets. The quantities they have […]
The post A route to scalable Majorana qubits appeared first on QuTech. Researchers at QuTech have found a way to make Majorana particles in a two-dimensional plane. This was achieved by creating devices that exploit […]
Researchers have used an innovative new strategy combining nuclear magnetic resonance imaging and a quantum modeling theory to describe the microscopic structure of Kagome superconductor RbV3Sb5 at 103 degrees Kelvin, which is equivalent to about 275 degrees below 0 degrees Fahrenheit.
Researchers have developed a special type of amplifier that uses a technique known as squeezing to amplify quantum signals by a factor of 100 while reducing the noise that is inherent in quantum systems by an order of magnitude. Their device is the first to demonstrate squeezing over a broad frequency bandwidth of 1.75 gigahertz, nearly two orders of magnitude higher than other architectures.
Trapped ions have previously only been entangled in one and the same laboratory. Now, teams have entangled two ions over a distance of 230 meters. The nodes of this network were housed in two labs at the Campus Technik to the west of Innsbruck, Austria. The experiment shows that trapped ions are a promising platform for future quantum networks that span cities and eventually continents.