Researchers successfully simulated Google’s 53-qubit Sycamore quantum circuit seven times faster than the original quantum computer using 1,432 GPUs and innovative tensor network algorithms, effectively refuting Google’s quantum advantage claim.
Scientists have discovered and experimentally confirmed the existence of “quadruplons,” genuine four-body quasi-particles consisting of two electrons and two holes tightly bound together in a monolayer semiconductor, which represent a fundamentally new type of matter excitation beyond previously known quasi-particles like excitons and bi-excitons.
UCL researchers have developed a groundbreaking technique using arsenic atoms in silicon that achieves a 97% success rate for single-atom placement (compared to phosphorus’s 70%), potentially solving quantum computing’s twin challenges of error rates and scalability through scanning tunneling microscopy hydrogen resist lithography.
A groundbreaking theory bridges quantum mechanics and general relativity by treating the spacetime metric as a quantum operator and introducing an entropy-based gravitational action that yields modified Einstein equations with an emergent cosmological constant, potentially explaining cosmic expansion and dark matter through a novel auxiliary “G-field.”
Harvard scientists have developed a groundbreaking photon router that creates an optical interface between light signals and superconducting microwave qubits, potentially solving a major quantum computing challenge by enabling different quantum systems to communicate efficiently without bulky wires, thus bringing distributed, fiber-optic-based quantum computers closer to reality.
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 […]
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 […]
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 […]
New Hub focussing on quantum sensing, imaging and timing to be launched as part of £160 million investment.
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 […]
The LMU Center for NanoScience and four LMU spin-off companies present the Nano Innovation Award for particularly innovative doctoral theses. Andreas Gritsch, who completed his doctorate in the Otto Hahn Group Quantum Networks at MPQ, […]
The 3rd annual Commercialising Quantum Global event took place on 5th June 2024, and included significant participation from UK Quantum Technology Hub Sensors and Timing researchers across the consortium. Hosted by Economist Impact, the summit […]
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 […]
The post NWO Summit Grant to investigate fundamental quantum limits appeared first on QuTech.
In a groundbreaking collaboration, QuTech, Eurofiber, Q*Bird, and Juniper have successfully developed and implemented a proof-of-concept quantum communication system in the Utrecht area of the Netherlands. This innovative project, called QuaSecom, demonstrates a significant advancement […]
Three spin-out companies set up by UK Quantum Technology Hub Sensors and Timing researchers received Quantum Catalyst funding, as announced by the Department for Science, Innovation and Technology (DSIT) on 5 February 2024. As part […]