Articles tagged with Qubits
A team of scientists at ETH Zurich have found a way to avoid disturbances in qubit operations by coupling a microwave photon to a spin qubit. The researchers created a 'spin trio' consisting of three quantum dots and demonstrated strong coupling between the spin qubits and a microwave photon.
Scientists have successfully implemented an atomic engineering strategy to individually address closely spaced spin qubits in silicon, achieving dramatically different control frequencies. This breakthrough enables selective addressing of qubits, reducing errors and advancing the development of a silicon-based quantum computer.
The study demonstrates an interaction between a qubit and surface acoustic waves in the quantum regime, enabling an alternative approach to quantum computer design. This allows for smaller, more stable, and compact quantum computers without the limitations of microwave radiation.
A team from Aalto University creates a miniature 'heat valve' in a quantum system, enabling the controlled exchange of energy with external surroundings. This breakthrough aims to improve the efficiency of quantum heat engines and refrigerators.
Researchers have developed a refined magnetic sense using algorithms and hardware from quantum computation, achieving six times higher sensitivity than classical methods. The transmon qubit-based magnetometer uses adaptive phase-estimation schemes to measure the strength of external magnetic fields.
The researchers achieved a significant breakthrough in quantum computing by simulating a 64-qubit circuit using a novel partitioning scheme. This method reduces the computational complexity of quantum algorithms, enabling faster simulations and paving the way for future advancements in quantum machine learning and unsupervised learning.
Researchers at ETH Zurich have developed a method to transmit quantum states deterministically over short distances, paving the way for more efficient and secure quantum computing and cryptography. The transmission rate reaches 80% fidelity, enabling entanglement creation between qubits up to 50,000 times per second.
Researchers from Purdue University and the Technological University of Delft have discovered enhanced spin-orbit interaction in silicon, allowing for easier manipulation of qubits using electric fields. This enables the creation of silicon quantum computer chips with millions of qubits, leading to high-speed information processing and ...
Scientists at Oak Ridge National Laboratory successfully simulated an atomic nucleus using a quantum computer, demonstrating the ability of quantum systems to compute nuclear physics problems. The team extracted the deuteron's binding energy with high accuracy, despite challenges posed by inherent noise on the chip.
Researchers at Oregon State University have developed a new inorganic compound that adopts a crystal structure capable of sustaining a quantum spin liquid state. This discovery is a key step toward the creation of next-generation supercomputers, which will solve complex problems efficiently and consume less energy.
Researchers demonstrate a new algorithm to simulate quantum channels using IBM's cloud quantum computer, enabling efficient open system quantum simulation and exploring its applications in quantum communication. The method reduces gate complexity compared to Stinespring dilation, making it scalable for higher dimensions.
Yale researchers have achieved a major milestone in quantum computing by transmitting quantum data between two separate points using a new 'pitch-and-catch' technology. This innovation allows qubits to be interfaced with each other, enabling more complex algorithms and potentially faster computation speeds than classical computers.
Scientists have created a universal qubit design that can be used to build a quantum computer. The new superconductor qubit is based on a continuous superconducting nano-wire and has proven to be no worse than traditional designs in initial experiments.
Researchers in UCSB/Google group aim to demonstrate quantum supremacy with superconducting qubits, overcoming challenges of decoherence and error correction. Their goal is to build a qubit system capable of exploring complex states efficiently, enabling applications in condensed matter physics, chemistry, and materials.
Researchers from Kazan Federal University and Kazan Quantum Center have developed a multiresonator broadband quantum memory-interface with a record-breaking 16.3% efficiency at room temperature. The innovation has the potential to create universal memory solutions for quantum computers on superconducting qubits.
Researchers at Delft University of Technology provide definite proof for Majorana particle existence, showcasing perfect quantization of zero-bias peak. This achievement enables exploration of Majorana quantum computing, with potential applications in topological quantum computing.
Researchers at UNSW Sydney have successfully observed controllable interactions between two atom qubits made of phosphorus atoms in a silicon chip. The discovery is a significant milestone for building a quantum computer, as it demonstrates the ability to manipulate the spin correlations of electrons in these tiny devices.
A team of researchers has demonstrated a proof-of-principle experimental demonstration on simulating molecular vibronic spectra using a 3D circuit quantum electrodynamics system. The simulator can model different molecules and obtain temporal correlation functions, electronic-vibronic coupling strength, and spectra of both equilibrium ...
For the first time, a Toffoli gate was experimentally demonstrated in a semiconductor three-qubit system. This achievement marks an important progress in scaling up semiconductor quantum dot-based qubits and motivates further research on larger-scale semiconductor quantum processors.
Researchers developed a novel verification method to prove large-scale entanglement with only a single measurement run, significantly reducing time and resources required. This breakthrough enables the reliable benchmarking of future quantum devices with unprecedented efficiency.
Researchers at Princeton University have successfully linked silicon spin qubits using light, enabling long-distance communication and opening the door to more complex systems. This breakthrough increases flexibility in device design and could lead to the creation of quantum computing devices from silicon.
Engineers at Rigetti Computing have developed a technique to reduce qubit interference, allowing for the creation of larger practical quantum processors. This breakthrough enables the retention of logical operations independent of the state of a large quantum register.
Researchers at the University of Sydney have discovered a 'quantum hack' that improves quantum error correction by up to 400 percent, allowing for more efficient computations. This breakthrough could lead to fewer physical qubits required for basic calculations, making practical quantum computers a reality.
Researchers have successfully coupled a single electron spin and a single photon on a silicon chip, enabling the transfer of quantum information between them. This breakthrough paves the way for scaling up quantum bits on silicon chips, a crucial step towards creating more powerful quantum computers.
A Singapore-Japan research team developed a new scheme to verify quantum computations after they're completed, allowing customers to check results and protect companies from dishonest users. The 'post-hoc verification' method can be done with or without specialized hardware.
Researchers have developed a quantum metamaterial composed of twin qubits, which can be used as a control element in superconducting electronic devices. The material exhibits unique properties that disappear when separated into its components, making it a promising candidate for future applications.
The new chip design enables millions of qubits to be integrated and processed simultaneously, solving complex problems exponentially faster than conventional computers. The UNSW-led team's innovative approach incorporates error-correcting codes and sophisticated protocols to control the vast array of quantum bits.
Researchers at Princeton University have created a key piece of silicon hardware that controls quantum behavior between two electrons with extremely high precision. The demonstration of this nearly error-free gate opens the door to larger scale experiments and has the potential to scale to more qubits with even lower error rates.
Rice University physicists have successfully created a previously unseen state of matter, the excitonic insulator, which could be used to form component of topological quantum computer. The device uses braided qubits and has inherent topological signatures that could enable fault-tolerant qubits.
A team of researchers has successfully recreated Hofstadter's butterfly using quantum simulators, enabling the simulation of exotic electronic conduction properties. This breakthrough could lead to the development of new materials with unique properties.
Scientists have developed quantum simulators that can control over 50 interacting atomic qubits, mimicking magnetic quantum matter. The new record surpasses previous demonstrations and enables simulations of complex quantum matter, previously unreachable by modern supercomputers.
Physicists at MIT and Harvard University have developed a new technique to manipulate quantum bits by trapping and arranging individual atoms. This breakthrough enables the simulation of complex systems like materials and optimization problems, such as the traveling salesman problem, exponentially faster than classical computers.
Researchers at Google and UC Santa Barbara developed a new process for creating fully superconducting interconnects, compatible with existing qubit technology. This breakthrough aims to enable larger-scale quantum computers with millions of qubits.
The Swedish government is investing SEK 1 billion in a research program to develop a superconducting quantum computer with greater computing power than current supercomputers. The goal is to create a functioning quantum computer with at least 100 qubits, enabling it to solve complex problems in fields like optimization, machine learnin...
Researchers mixed electromagnetic waves on a superconducting qubit, enabling the detection of quantum wave mixing. The study could aid in developing new quantum electronics.
Researchers at IST Austria have developed micrometer-scale, nonmagnetic devices that route microwave photons and shield qubits from harmful noise. The compact devices are a significant improvement over traditional predecessors and could revolutionize the development of quantum computers.
Researchers at Johannes Gutenberg University Mainz successfully demonstrated the operation of a four-qubit register comprised of atomic ions trapped in microchip traps. The achievement marks a decisive milestone for scaling up quantum computers, showcasing the potential for entangled states to be created with long-lived multipartite en...
Researchers at EPFL and University of Cambridge create device harnessing microscopic drum motion to convert signals between two circuits. The system enables dynamic reconfiguration of the isolator's direction, promising a new platform for building microwave devices without magnetic fields.
Researchers at The Australian National University have developed a groundbreaking material that enables a global quantum internet by storing quantum information in an erbium-doped crystal for more than a second, significantly longer than previous attempts. This breakthrough aims to unlock the full potential of future quantum computers.
Engineers at University of New South Wales invent radical new architecture for quantum computing based on novel 'flip-flop qubits'. The design allows for silicon quantum processor that can be scaled up without precise placement of atoms, enabling easier fabrication and placement of thousands or millions of qubits.
Researchers at MIT have successfully created a platform to store and process quantum information using ultracold molecules, which can retain their information for hundreds of times longer than previously achieved. The breakthrough could enable thousands of quantum computations in sequence within a second of coherence.
A new technique allows users to hide both data and program from the quantum computer, even with classical communication. The scheme uses entangled qubits and measurement-based computing to create ambiguity, making it difficult for the computer to determine the true calculation.
The University of Southern California has been selected to lead a consortium to build 100-qubit quantum machines that can solve complex optimization problems. The $45 million contract aims to develop computational frameworks and design quantum annealers for enhanced quantum optimization.
Researchers developed a technique called entanglement distillation to enhance quantum entanglement, confirming its effectiveness across two meters. The approach accounts for interactions between particles and environment, enhancing the connection by iterating on raw states.
Researchers from MIT, Harvard University, and Sandia National Laboratories report a new technique for creating targeted defects in diamond materials, which can function as qubits in quantum computing. The defects produced by the technique were found to be within 50 nanometers of their ideal locations.
Graphene-based quantum capacitor offers advantages in fabrication and resistance to electromagnetic interference. The device has the potential to produce stable qubits and can be used for high-frequency circuits or other electro-optic applications.
Researchers are developing phononic computers that can process vast amounts of information, rivaling quantum computers' capabilities. These 'phi-bits' store data in a superposition state, reducing sensitivity to environmental conditions.
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.