Articles tagged with Qubits
Physicists at the University of Cologne have successfully observed Crossed Andreev Reflection in TI nanowires, a crucial step toward engineering Majorana-based qubits. This breakthrough enables reliable control over superconducting correlations in topological insulator nanowires.
Researchers at the University of Arizona are using two federal grants to develop novel areas in quantum information. They aim to improve measurement capabilities of quantum magnetic field sensors, which could impact navigation, medical imaging, and other fields. Additionally, they will work on developing quantum low-density parity-chec...
Zuchongzhi-3 achieves quantum supremacy by outperforming classical supercomputers by 15 orders of magnitude, demonstrating the strongest quantum computational advantage in a superconducting system to date. The processor features 105 qubits and 182 couplers, with a coherence time of 72 μs and simultaneous gate fidelities exceeding 99%.
Researchers at HZB have produced mesoporous silicon layers with tiny pores, revealing the electronic transport mechanism. The material has great potential for applications, including thermally insulating qubits for quantum computers. Disorder plays a key role in understanding charge transport.
Researchers at Microsoft Quantum Lab West Lafayette advanced complex layered materials for topological quantum computing. The team accurately measured the state of quasi particles, a crucial step towards realizing a topological quantum computer.
Researchers from the University of Oklahoma have discovered a way to stabilize quantum dots, enabling continuous emission at room temperature. This breakthrough could make quantum computing and communication devices more efficient, cheaper, and appealing.
Physicists at Aalto University developed a new method to control qubits using a virtual transition and linear chirp of the drive frequency. This approach increases computational power while reducing hardware overhead.
Researchers developed a method to 'translate' optical signals to and from qubits, reducing cryogenic hardware needed. This breakthrough enables scalable quantum computers with increased qubit numbers, laying the foundation for room-temperature networks.
Researchers have discovered a new method to create supramolecular qubits using non-covalent bonds, paving the way for scalable and low-effort material development. This breakthrough has significant implications for quantum technology advancements in molecular spintronics.
Researchers propose a new strategy to stabilize quantum networks by rebuilding connections after each use, which leads to an eventual stable network state. The key is finding the optimal number of links to add, determined to be the square root of the number of users.
Researchers at Chalmers University of Technology and University of Maryland have engineered a new type of refrigerator that can autonomously cool superconducting qubits to record-low temperatures. This breakthrough paves the way for more reliable and error-free quantum computations.
A team of scientists has developed a novel quantum refrigerator method that cools superconducting qubits to 22 millikelvins, erasing quantum computer's chalkboard and reducing errors. This approach uses heat flowing between two parts of the refrigerator to power the eraser.
The EQUSPACE consortium aims to create a scalable solution for silicon-based donor spin qubits, enabling long-term future for Europe's quantum industry. The project will develop materials science methods and atomic modifications to enhance the stability of qubits.
The new startup, AQSolotl, has developed a quantum controller that enables users to control quantum computers easily using laptops and desktops. The technology, developed by NTU and NUS researchers, is designed to be scalable, adaptable, and cost-efficient.
Researchers have developed a practical way to detect 'leakage errors' in neutral atom platforms, removing a major roadblock for one branch of quantum computing. The detection method achieved 93.4% accuracy and enables researchers to flag and correct errors without disturbing the quantum state of the atoms.
Researchers at UChicago Pritzker School of Molecular Engineering have designed a new architecture for scaling up superconducting quantum devices. The modular design allows for flexible operability and enables the connection of any two qubits within a few nanoseconds, promoting high-fidelity quantum gates and entanglement.
Researchers used a superconducting quantum processor to study quantum transport in unprecedented detail. The experiments explored how a spin/particle current flows between two groups of qubits, revealing a unified picture of thermalisation dynamics and nonequilibrium steady dynamics.
The study successfully created electrically defined quantum dots in zinc oxide (ZnO) heterostructures, marking a significant milestone in the development of quantum technologies. The researchers observed the Coulomb diamond and discovered the Kondo effect in ZnO quantum dots.
Researchers at RIKEN Center for Quantum Computing successfully developed a novel double-transmon coupler (DTC) to enhance the fidelity of quantum gates. The DTC achieved high gate fidelity of 99.90% for a two-qubit device and 99.98% for a single-qubit gate, paving the way for fault-tolerant quantum computation.
Researchers from the University of Kent have demonstrated that quantum information can be used to coordinate devices like drones or autonomous vehicles. The team conducted experiments using real qubits inside a quantum computer developed by IBM, showing that devices can continue to influence each other even after separation.
A team of scientists has identified key sources of radiation that can interfere with superconducting qubits, leading to errors in quantum computing. By developing effective shielding measures, they aim to improve coherence times and pave the way for practical quantum computing.
A three-dimensional quantum error correction architecture was discovered, which can handle errors scaling like L<sup>2</sup> (LxL) in two-dimensions. This breakthrough promises to enhance the reliability of quantum information storage and reduce physical computing resources needed for 'logical qubits', paving the way for a more compact
Researchers at Delft University of Technology have successfully connected two small quantum computers between the Dutch cities of Delft and The Hague using a 25km quantum link. This milestone demonstrates a crucial step out of the lab and towards a future European quantum internet.
Chris Van de Walle, a distinguished professor at UCSB, has been awarded the American Physical Society's 2025 Aneesur Rahman Prize for Computational Physics. He was recognized for his development and application of first-principles methods to compute structural, electronic, and optoelectronic properties of point defects and interfaces.
Researchers used a classical computer and mathematical models to outperform a quantum computer on a task involving a two-dimensional quantum system of flipping magnets. The system displayed a behavior known as confinement, which had previously been seen only in one-dimensional systems.
The SPINNING project successfully demonstrated the entanglement of two registers of six qubits each over 20m distance with high fidelity. The spin-photon-based quantum computer achieved lower error rates than superconducting Josephson junctions, outperforming prominent models like Eagle and Heron.
Researchers at NICT and partners developed a new type of superconducting flux qubit that can operate optimally in zero magnetic field. The qubit boasts a coherence time of 1.45 microseconds, marking a significant improvement over previous designs.
Researchers at Shanghai Jiao Tong University develop a novel method for broadband frequency conversion using X-cut thin film lithium niobate, achieving a bandwidth of up to 13 nanometers. This breakthrough enables on-chip tunable frequency conversion, opening the door to enhanced quantum light sources and larger capacity multiplexing.
A new study by Prof. Yaron Bromberg and Dr. Ohad Lib from the Hebrew University of Jerusalem has made significant progress in quantum computing through photonic-measurement-based quantum computation. They successfully generated cluster states with over nine qubits at a frequency of 100 Hz, overcoming scalability barriers.
Researchers successfully couple two Andreev qubits mediated by a microwave resonator, enabling long-range exchange of quantum information. The study demonstrates the potential of Andreev pair qubits as compact and scalable solid-state qubits for reliable quantum computing.
Researchers developed boron nitride nanotubes with spin qubits, more sensitive to off-axis magnetic fields than diamond tips. The technology has applications in quantum sensing, semiconductor industry, and nanoscale MRI.
Scientists from Brookhaven National Laboratory have developed a new type of qubit that can be easily manufactured without sacrificing performance. The constriction junction architecture offers a simpler alternative to traditional SIS junctions, using a thin superconducting wire instead of an insulating layer.
A new quantum error correction approach called 'many-hypercube codes' has been proposed to overcome scalability issues in conventional methods. This innovative approach allows for high-performance fault-tolerant quantum computing by enabling logical gates to be run in parallel, similar to classical computers.
An international team has discovered 3D quantum spin liquids in Nickel Langbeinites, a new class of materials. The discovery was made using neutron experiments and theoretical modelling, which revealed an island of liquidity at the centre of a strongly frustrated lattice.
MIT researchers have proposed a best-of-both-worlds approach to improve the speed of a 1994 quantum factoring algorithm while reducing memory requirements. The new algorithm is faster, requires fewer qubits, and has a higher tolerance to quantum noise.
Researchers developed a new superconductor material that uses a delocalized state of an electron to carry quantum information. The material could be used to create low-loss microwave resonators for quantum computing, which is critical for reducing decoherence and increasing the stability of qubits.
Physicists have developed a method to directly measure qubit coherence loss as thermal dissipation in electrical circuits. This breakthrough allows researchers to better understand how their qubits decay and improve quantum computing technology.
Researchers develop a modular approach to scaling quantum processors using semiconductor technology and long-distance entangling links. This enables the creation of small arrays of qubits that can be connected to form larger systems, overcoming challenges in controlling individual qubits and maintaining coherence.
Researchers at Kyoto University have developed a new method to reduce optical interference and measure the quantum coherence time of moiré excitons, which are electron-hole pairs confined in moiré interference fringes. This breakthrough enables the realization of quantum functionality in next-generation nano-semiconductors.
A protocol has been designed to harness the power of quantum sensors, allowing for fine-tuning of quantum systems to sense signals of interest. The framework uses a combination of qubits and bosonic oscillators to create sensors that are vastly more sensitive than traditional sensors.
Researchers at QuTech have demonstrated the creation of somersaulting spin qubits, which can be controlled using baseband signals and small magnetic fields. This breakthrough enables universal quantum logic and simplifies control electronics for future quantum processors.
Silicon photonics enables frequency-entangled qubits, allowing secure quantum information distribution across a five-user quantum network. The breakthrough promotes advancements in quantum computing and ultra-secure communications networks.
Researchers at EPFL's Laboratory of Nanoscale Electronics and Structures have fabricated a device that efficiently converts heat into electrical voltage at temperatures lower than outer space. The innovative device exploits the Nernst effect, a complex thermoelectric phenomenon, to achieve unprecedented performance.
Theoretical physicists at Utrecht University have discovered that fractals might hold the key to making electric currents flow without energy loss. By growing fractal structures on top of semiconductors, scientists have created materials with zero-dimensional corner modes and lossless one-dimensional edge states.
Researchers developed a machine learning estimator to classify charge states in quantum dots, enabling automatic tuning of qubits. The estimator achieved high accuracy with visualizations revealing decision-making patterns, paving the way for scaling up quantum computers.
A study led by FAMU-FSU College of Engineering Professor Wei Guo found that small bumps on solid neon surfaces create ring-shaped quantum states, enabling controlled manipulation of electrons. This alignment allows for optimized electron-on-solid-neon qubits with extended coherence times.
A team of scientists led by Qimiao Si predicts the existence of flat electronic bands at the Fermi level, which could enhance electron interactions and create new quantum phases. These bands have the potential to enable new applications in quantum bits, qubits, and spintronics.
A team of researchers has developed a platform to probe, interact with and control quantum systems in silicon. They used an electric diode to manipulate qubits inside a commercial silicon wafer, exploring how the defect responds to changes in the electric field and tuning its wavelength within the telecommunications band.
Researchers at Chalmers University of Technology have created a unique system that combats the trade-off problem between operation complexity and fault tolerance. The system uses harmonic oscillators to encode information linearly, offering a seamless gradient of colors and providing far richer possibilities than traditional qubits.
Researchers at Tohoku University have unveiled a groundbreaking discovery of a one-dimensional topological insulator (TI), a unique state of matter that differs from conventional metals, insulators, and semiconductors. This breakthrough has significant implications for the development of qubits and highly efficient solar cells.
The discovery enables experiments with Majoranas that were previously inaccessible, thanks to the flexibility of the new 2D platform. This breakthrough paves the way for the creation of networks of Majoranas and integration with auxiliary elements needed for control and readout.
Researchers have developed a method to create and control optical qubits in silicon with high precision, enabling the fabrication of reliable quantum computers. This breakthrough could advance quantum computing and networking capabilities, paving the way for breakthroughs in human health, drug discovery, and artificial intelligence.
A team of researchers has found a way to create nearly noiseless qubits in calcium oxide, a promising material for quantum computing and communication. The discovery was made using theoretical and computational approaches, and the results show that the qubits can store information with extremely low levels of noise for an extended period.
Researchers have developed a scalable, modular hardware platform that integrates thousands of interconnected qubits onto a customized integrated circuit. This 'quantum-system-on-chip' (QSoC) architecture enables precise control and tuning of a dense array of qubits, making it possible to achieve large-scale quantum computing.
Researchers at Lancaster University and Radboud University Nijmegen have discovered a novel pathway to modulate and amplify spin waves at the nanoscale, paving the way for dissipation-free quantum information technologies. The study's findings could lead to the development of fast and energy-efficient computing devices.
Researchers at Washington University in St. Louis have developed a new technique to enhance quantum entanglement stability in qubits. This breakthrough addresses the challenges of maintaining coherence and reliability in quantum systems.
Researchers at the University of Innsbruck developed a novel method using diffusion models to generate quantum circuits. The model can produce accurate and flexible circuits, including those tailored to specific quantum hardware connections.
Scientists at the University of Rochester have developed a technique for pairing particles of light and sound, allowing for faithful conversion of information stored in quantum systems. The method uses surface acoustic waves, which can be accessed and controlled without mechanical contact, enabling strong quantum coupling on any material.
Researchers developed a probabilistic approach to generate optimal sequences for execution on quantum computers, reducing search time by several orders of magnitude. The new method enables efficient searches within classical computational resources, contributing to the realization of the quantum Internet and improved performance.
Researchers at the University of Manchester have developed an ultra-pure form of silicon that can be used to construct high-performance qubit devices, a crucial component for scalable quantum computers. The breakthrough could enable the creation of one million qubits, which may be fabricated into pinhead-sized devices.