Articles tagged with Qubits
A new quantum-circuit refrigerator has been invented by Mikko Möttönen and his team at Aalto University, which reduces errors in quantum computing. The device uses a nanoscale cooling mechanism to cool qubits, making them more reliable and powerful.
Researchers at the University of Innsbruck and TU Wien have developed a new quantum communication protocol that can reliably transfer quantum information even in the presence of detrimental noise. The protocol uses an additional quantum oscillator to couple qubits, allowing for precise separation of the noisy signal from the weaker qua...
Researchers from UPV/EHU-University of the Basque Country and Boulder group successfully designed a robust 2-ion quantum logic gate that operates in a microsecond. This breakthrough could lead to advancements in quantum technology, including secure communications.
Researchers at ORNL have set a new record in superdense coding, transferring 1.67 bits per qubit over fiber optic cable. This achievement brings the technique one step closer to practical use and could lead to more efficient data transfer methods for applications like the Internet and cybersecurity.
Researchers from the University of Sydney have demonstrated a technique to predict and prevent the randomization of quantum systems, or decoherence, which destroys their useful quantum character. This achievement could help bring powerful quantum technology closer to reality.
Scientists have successfully built a device that allows a single electron to communicate with a photon, paving the way for more efficient quantum computing. This breakthrough enables quantum information to be transferred between electrons and photons, reducing noise and increasing performance.
Researchers from Moscow Institute of Physics and Technology develop a method to connect two electrons in a qudit, paving the way for compact high-level quantum structures. This breakthrough could lead to practical applications such as efficient solar cells and new drugs.
Researchers have developed a technique to remove unpaired electrons from superconducting quantum circuits, resulting in a three-fold improvement in qubit lifetime. This breakthrough has the potential to significantly improve the performance of quantum computers by reducing errors and increasing data storage time.
Scientists have created stable qubits using supramolecular chemistry, enabling the connection of individual qubits into structures called two-qubit gates. This approach has potential for creating multi-qubit gates and advancing quantum computing.
Researchers have created a qubit in zinc selenide, enabling the transfer of quantum information at the speed of light. The new technique shows that it is possible to create a qubit faster than with all existing methods.
Researchers at UCSB explore the delicate balance between coherence and control with a simple yet complete platform for quantum processing. They successfully integrated the control of three superconducting qubits, creating an artificial magnetic field that allowed photons to interact strongly with each other and the pseudo-magnetic field.
Researchers at University of Waterloo developed a new extensible wiring technique for controlling superconducting quantum bits, enabling the creation of scalable quantum computers. The technique, called the 'quantum socket,' connects classical electronics with quantum circuits and can be extended to thousands of qubits.
Researchers at University of Waterloo's IQC recorded interaction 10 times larger than previously seen between photons and qubit, enabling investigation of light-matter interactions in a new domain. The ultrastrong coupling may lead to exploration of new physics related to biological processes, exotic materials, and relativistic physics.
The University of Melbourne team created a quantum molecular microscope to image individual atoms in bio-molecules, overcoming issues with conventional biomolecule imaging. The system uses atomic-sized qubits as highly sensitive quantum sensors to capture high-resolution images.
Scientists have discovered a qualitatively new state of a superconducting artificial atom dressed with virtual photons, resolving a forty-year-old problem in atomic physics. The discovery provides a platform to investigate light-matter interaction at a fundamental level and may contribute to the development of quantum technologies.
The stability of qubits can be maintained 100 times more effectively in silicon than in gallium arsenide, allowing for longer coherence times and improved gate fidelity. Researchers are now focused on scaling up the qubits for use in circuits of multiple interplaying qubits.
Researchers from MIT and Lincoln Laboratory have developed a prototype chip that can trap ions in an electric field with built-in optics, enabling the miniaturization of qubit technology. This breakthrough could lead to practical quantum computers by scaling up trapped-ion quantum information processing.
USC Viterbi School of Engineering researchers have developed a new method to suppress heating errors in quantum processors, called nested quantum annealing correction. This scheme reduces and corrects errors associated with heating, a common type of error in quantum optimizers.
The new module combines proven techniques with advances in hardware and software to run arbitrary algorithms on five qubits. It enables the flexibility to test the module on a variety of problems, bringing practical quantum computing closer to reality.
Researchers from OIST Graduate University have developed a classical model to describe the phenomenon of strong coupling, challenging previous thoughts that it was a quantum effect. Strong coupling occurs when light and matter interact strongly, affecting both parties equally.
Scientists have successfully realised qubits in a novel form, leveraging electron holes to overcome interference issues. This breakthrough offers potential improvements in programming and reading quantum bits for future quantum computers.
Researchers at Yale University have created a novel system to encode, spot errors, decode and correct errors in a quantum bit, extending its lifetime more than three times longer than typical superconducting qubits. This breakthrough enables the use of Quantum Error Correction (QEC) for real computing.
Researchers at UCSB have uncovered a link between classical chaos and quantum entanglement using controllable quantum systems. Their findings suggest that thermalization is the driving force behind both chaos and entanglement in quantum systems, with implications for quantum computing.
A new method to pack quantum computing power into a small space and control it was devised by Penn State researchers. The technique uses laser light and microwaves to precisely control the switching of individual qubits, enabling calculations impossible for classical computers.
Researchers at RMIT University have developed a method to efficiently detect high-dimensional entanglement, a crucial aspect of quantum computing. This breakthrough could significantly improve the performance of quantum computers by reducing the number of measurements needed to validate their functionality.
Researchers at UMD developed a method to build diamond-based hybrid nanoparticles in large quantities, enabling precise control of their properties. The technique uses nanoscale diamonds with nitrogen vacancies to create customizable semiconductors, magnets, and qubits.
Professor Manfra is leading a team at Purdue to develop new materials for topological qubits, which are expected to be more robust against noise. The team uses molecular beam epitaxy to create special, ultrapure materials and aims to bring scientists and engineers together to solve challenging technical problems.
Mun Dae Kim wins inaugural award for his work on superconducting flux qubits, increasing effective coupling strength for quantum computation; honors Dr. Howard E. Brandt, journal's late editor-in-chief.
RMIT researchers have successfully trialled a quantum processor capable of routing quantum information from different locations, opening a pathway towards the first quantum data bus. This breakthrough has significant implications for future quantum technologies, including quantum computing and secure communication.
Researchers at the University of Oregon have developed a way to control electron states using both light and sound waves, providing a potential breakthrough for quantum computing. This method uses sound waves to manipulate qubits, which are essential for building advanced quantum systems.
Researchers at MIT describe a feedback-control system that preserves quantum superposition in nitrogen-vacancy centers, enabling reliable quantum computing. The system uses entangled spins of nitrogen and NV center atoms to correct errors during computations.
Builders of future superconducting quantum computers may learn from semiconductors to simplify operation and improve qubits. Researchers found an efficient implementation using novel control approaches, eliminating costly overheads for control and reducing gate error rates.
A team of researchers from INRS has successfully generated multiphoton entangled quantum states using on-chip optical frequency combs. This breakthrough paves the way for practical applications of quantum computing, enabling secure data transfer and superfast processing.
Majorana zero modes are present and protected in a superconducting state, storing quantum information in a way that leaves the quantum state intact when either location is disturbed. This finding verifies previous experiments and goes further by showing that Majorana modes are protected as predicted theoretically.
Researchers from MIT and University of Innsbruck have designed a scalable quantum system that can factor large numbers efficiently using 5 atoms. This breakthrough represents the first implementation of Shor's algorithm in a scalable manner, enabling potential cracking of encryption schemes for protecting sensitive data.
Scientists have developed a novel method to control the Berry phase of a quantum state in a nitrogen-vacancy center in diamond, enabling robust quantum logic operations. The approach uses laser light to draw paths for the defect's spin, resulting in insensitive behavior to noise sources.
Researchers at JQI develop interface between photons and single electrons, enabling fast interaction and scalable integration on a chip. This breakthrough advances quantum networks and enables entanglement distribution, secret communication, and complex quantum devices.
A team of researchers has been awarded a grant to develop a new ion technology for tackling quantum computing's error control challenge. The goal is to build modular super-qubits that can correct errors and scale up quantum information applications.
Physicists at NIST have performed logic operations with two atoms of different elements, a hybrid design that could be an advantage in large computers and networks. The experiment demonstrates the feasibility of mixed-atom gates, which rely on entangling ions using custom traps and laser beams.
Researchers at Oxford's NQIT Hub develop a hybrid logic gate using calcium-40 and -43 ions, demonstrating precision beyond the fault-tolerant threshold. This achievement advances the development of trapped-ion quantum computing and its potential to solve complex problems in chemistry and biology.
Researchers created cleverly designed molecular complexes that can store information in a quantum state, overcoming one of the biggest challenges in quantum computing. These new molecules could potentially lead to the development of functional devices and more efficient computer designs.
Physicists at UNSW Australia and the University of Melbourne have designed a scalable 3D silicon chip architecture based on single atom quantum bits, enabling the development of operational quantum computers. The design provides an endpoint in the international race to build such systems.
Researchers at University of Innsbruck propose new quantum computer architecture that detaches logical qubit from physical implementation, overcoming challenges in adiabatic quantum computation. This approach enables scalable and fault-tolerant quantum computing.
Researchers at the University of New South Wales have successfully built a silicon quantum computer, overcoming a crucial hurdle. The achievement enables the creation of a logic gate using two qubits, paving the way for a full-scale processor chip.
Physicists at the University of Basel have demonstrated that electron exchange limits the stability of quantum information in qubits. By controlling this exchange process, they can extend coherence times and improve quantum computing performance.
Researchers at Penn State have developed a method for addressing individual neutral atoms using laser light, enabling the creation of quantum computers. The technique allows for precise control over qubits and enables quantum computing applications such as factoring large numbers used in secure codes.
Researchers have developed a new quantum error correction code that can correct errors afflicting a specified fraction of qubits, not just the square root of their number. This protocol requires little measure of quantum states and can correct virtually all errors in quantum memory.
Scientists at the University of York have developed a protocol to achieve key-rates at metropolitan distances three orders-of-magnitude higher than previously. This breakthrough enables the creation of secure communication technologies for consumer, commercial and government markets.
Researchers at Georgia Tech have developed a microfabricated ion trap architecture that increases qubit density and brings us closer to building a quantum computer. The new design uses ball grid array techniques to fit more electrodes onto the chip, paving the way for increased scalability.
A UN SW-led research team has successfully encoded quantum information in silicon using simple electrical pulses for the first time. This breakthrough enables local control of individual qubits with electric fields, reducing development costs and making large-scale quantum computers more accessible.
Quantum physicists at the University of California - Santa Barbara have developed a quantum circuitry system that self-checks for errors and suppresses them, preserving qubits' state(s) and imbuing the system with reliability. The system uses the surface code scheme to detect errors based on parity information.
Physicist Kater Murch's experiment combines information about a quantum system's evolution before and after a target time to narrow the odds of correctly guessing its state. The 'hindsight' prediction is 90% accurate, suggesting that time runs both backward and forward in the quantum world.
Physicists use entangled ions to test the isotropy of space, disproving anisotropy theories. The experiment shows space is isotropic to one part in a billion billion, improving upon previous experiments.
Physicists at the University of Michigan have discovered samarium hexaboride, a topological insulator that could enable quantum computers and other next-generation electronics. The material's properties include rare Dirac electrons with potential applications in qubit development.
Researchers at UCSB's Martinis Lab successfully demonstrated a quantum version of Gauss's law using superconducting qubits. The team achieved full control over a two-qubit system, enabling precise measurement of local curvature through movement, showcasing the power of arbitrary control in quantum simulation.
Two research teams at UNSW Australia have developed high-accuracy quantum bits in silicon, surpassing 99% accuracy. The breakthroughs are published simultaneously in Nature Nanotechnology and aim to build powerful quantum computers.
Scientists at the Cavendish Laboratory and Joint Quantum Institute create a new type of qubit control that leverages its surroundings to maintain quantum integrity. By harnessing the environment's magnetic field, they enable efficient manipulation and readout of quantum states, paving the way for quantum computing advancements.
Researchers at CIFAR have developed a method to compress quantum information into fewer qubits while preserving its content. This breakthrough has significant implications for efficient quantum computing and communication.
Researchers at Perimeter Institute discovered novel states in graphene, a 1-atom-thick material, which exhibits the fractional quantum Hall effect. The discovery opens doors to studying new phenomena and potential applications in quantum computing.
Theorists propose using a bottom-up approach to create hybrid quantum devices by placing superconducting regions within silicon crystals. This could combine the benefits of both silicon spin qubits and superconducting circuits, enabling more robust qubit designs.