Articles tagged with Quantum Processors
Researchers have developed a key experimental device for future quantum physics-based technologies by coupling nanomechanical oscillators with qubits. This enables the manipulation of quantum states in mechanical oscillators, generating quantum mechanical effects that could empower advanced computing and precise sensing systems. The de...
Researchers have engineered an optical device with functional characteristics similar to memristors, which can operate on quantum states of light and encode quantum information. This breakthrough enables the creation of a quantum memristor, potentially bridging artificial intelligence and quantum computing.
Researchers have discovered an elegant equation to approximate the coherence time of materials hosting spin qubits. The team can now estimate coherence times in seconds using just five material properties, facilitating a rapid exploration of new candidate materials.
Behunin's project targets challenges in practical quantum computing by controlling noise and its impact on qubits. By manipulating sound waves, he hopes to quiet the noise that corrupts information stored in quantum computers.
Researchers proved a conjecture on quantum complexity growth, contradicting the Brown-Susskind intuition that complexity increases linearly for astronomically long times and then remains maximum. Instead, complexity grows linearly with time until it saturates at an exponential point related to system size.
Researchers create a microscopic sandwich of an aluminium superconductor on top of an indium-arsenic semiconductor to probe quantum interactions in super-semi sandwiches. They developed a novel probing technique, paving the way for new applications like topological quantum bits based on Majorana zero modes.
Scientists have achieved efficient quantum coupling between two distant magnetic devices, which can host magnons and exchange energy and information. This achievement may be useful for creating new quantum information technology devices.
Researchers from the University of Warsaw have developed a quantum processor that can efficiently provide information on matter hidden in light, improving spectroscopy measurements. The device achieves high resolution (15 kHz) using a small amount of light, surpassing classical limits.
Thirumalai Venkatesan's research aims to create a human-brain like computing system using quantum technology. His team has discovered a wonder molecule that enables molecular devices to mimic the brain's logic and reconfigure physical wiring, leading to enhanced computational power and reduced energy consumption.
Researchers at NIST have revived and improved the charge pumping method to detect single defects as small as one-tenth of a billionth of a meter. The new technique can indicate where defects are located in transistors, enabling accurate assessment of their impact on performance.
A team of researchers from Ritsumeikan University developed an unprecedented stream cipher using chaos theory to create highly secure cryptographic systems. The new system is resistant to statistical attacks and eavesdropping, even against quantum computers, making it a promising solution for post-quantum era cryptosystems.
A €16 million project, PhotonQ, is developing a photonic quantum processor to process qubits and reduce error rates. The processor will enable rapid scaling to relevant qubit numbers for practical applications.
Researchers have achieved 99% accuracy in quantum computing using silicon-based devices. The breakthrough enables the creation of large arrays of qubits capable of robust computations, overcoming a significant challenge in building reliable quantum computers.
Researchers at Sandia National Laboratories developed a precision diagnostic to detect and describe problems in quantum computing hardware. Using gate set tomography, they discovered new innovations that improve the reliability and accuracy of quantum processors.
Researchers developed a multifunctional microfiber probe for real-time monitoring of cellular molecules and changes in cell morphology. The nanowire probe enabled sensitive detection of refractive index distribution in single living cells during apoptosis.
A team of researchers has developed a new technique to embed single atoms in silicon wafers, mirroring methods used to build conventional devices. The technique creates large-scale patterns of controlled atoms that can be manipulated and read out, enabling the construction of large-scale quantum devices.
Researchers outline potential and challenges of integrated photonic circuits for quantum technologies, highlighting need for investment in education and infrastructure. The paper provides a comprehensive overview of current state and future applications of integrated photonics for quantum technologies.
Researchers develop technique to study singlet/triplet ratio of electron pairs in charge-separated states, which could lead to advancements in organic solar cells and qubits. The 'pump-push-pulse' method allows for snapshots of spin state at different times.
A novel quantum-based sensor has been developed to detect the SARS-CoV-2 virus with high accuracy and speed. The sensor uses nitrogen vacancy centers in diamond to detect minute perturbations in the presence of viral RNA, enabling fast and reliable detection.
A team of researchers demonstrates an adaptive optimization protocol that can engineer arbitrary high-dimensional quantum states, overcoming limitations due to noise and experimental imperfections. The protocol uses measured agreement between produced and target state to tune experimental parameters.
Scientists at Sandia National Labs invent a new yardstick for benchmarking performance of quantum computers. The mirror-circuit method is faster and more accurate than conventional tests, revealing the true potential and limitations of quantum processors.
Researchers at QuTech have successfully integrated high-fidelity operations on encoded quantum data with a scalable scheme for repeated stabilization. They demonstrate that it is possible to compute as well as encode and stabilize qubits, a crucial step towards developing fault-tolerant quantum computers.
The ATIQ project aims to develop reliable, user-friendly quantum computing demonstrators based on ion trap technology within 30 months. The consortium will optimize hardware for applications in chemistry and finance, paving the way for new approaches in credit risk assessment.
Researchers at Lawrence Berkeley National Laboratory's Advanced Quantum Testbed demonstrated a method to reduce error rates in quantum algorithms, leading to more accurate and stable computations. The technique, known as randomized compiling, can suppress one of the most severe types of errors: coherent errors.
Researchers at Aalto University have developed a precise microwave source that operates at extremely low temperatures, potentially removing the need for high-frequency control cables. The new device could enable larger quantum processors with more qubits, increasing their potential applications in fields like computing and sensing.
Scientists from TUM and Google Quantum AI used a highly controllable quantum processor to simulate exotic particles called anyons, which can emerge as collective excitations in two-dimensional systems. The study reveals the properties of these particles through braiding statistics, a key feature of topologically ordered states.
Researchers at Harvard have successfully observed quantum spin liquids, a previously unseen state of matter that has been elusive for nearly 50 years. By manipulating ultracold atoms in a programmable quantum simulator, the team was able to create and study this exotic state, which holds promise for advancing quantum technologies.
Researchers at University of Helsinki have developed a new method to speed up calculations on quantum computers, reducing the number of measurements required and increasing efficiency. This breakthrough could lead to faster and more sustainable quantum computing.
A team of researchers from the University of Stuttgart successfully integrated color centers into nanophotonic silicon carbide structures, paving the way for more efficient quantum computers. The approach enables the robust spin-optical properties of the color centers to be maintained after integration.
Researchers have developed a superconducting silicon-photonic chip for quantum communication, enabling optimal Bell-state measurement of time-bin encoded qubits. This breakthrough enhances the key rate of secure quantum communication and removes detector side-channel attacks, significantly increasing security.
Researchers at University of Copenhagen have developed a new quantum circuit that can operate and measure all four qubits simultaneously. This breakthrough resolves a significant engineering headache in the development of large functional quantum computers.
Pasqal has published a paper in the APS Physics journal presenting a new machine learning protocol called Quantum Evolution Kernel (QEK) for measuring similarity between graph-structured data on quantum computers. QEK is stable against detection error and comparable to state-of-the-art graph kernels on classical systems.
Researchers at Skoltech extend the adiabatic theorem to finite temperatures, ensuring more stable quantum dynamics. The findings have significant implications for next-generation quantum devices and computing.
Scientists have fabricated chains of triangular polycyclic aromatic hydrocarbons with spin 1, exhibiting Kondo resonances characteristic of spin ½ quantum objects. This breakthrough enables the exploration of linear spin chains and two-dimensional networks for quantum computation.
Researchers have successfully created a fault-tolerant logical qubit that works better than the worst individual quantum computing pieces. This breakthrough demonstrates a promising approach for building larger, more reliable quantum computers.
Researchers used a supercomputer to emulate Google's quantum processor and discovered a reachability deficit, a performance limitation induced by a problem's constraint-to-variable ratio. The study showed that future experiments will require significantly more quantum resources to overcome this limit.
Physicists have developed a new method to identify and address imperfections in materials for quantum computing. The technique, terahertz scanning near-field optical microscopy, has been used to optimize fabrication protocols and reduce decoherence.
A Russian-U.K. research team has proposed a theoretical description for the new effect of quantum wave mixing involving classical and nonclassical states of microwave radiation. The study builds on earlier experiments on artificial atoms, which serve as qubits for quantum computers and probes fundamental laws of nature.
Researchers propose a time-sensitive network control plane as a key component of quantum networks, enabling real-time control and low costs. Industry applications include cybersecurity through quantum key distribution, but standardization and certification are needed.
Researchers from University of Technology Sydney have developed new technology that integrates quantum sources and waveguides on chip using hexagonal boron nitride and adhesive tape. This innovation paves the way for future everyday use of quantum communications, improving online security and privacy.
Researchers at The Rockefeller University have revealed a more nuanced historical wave pattern to the rise of transistor density in silicon chips. The study highlights six waves of improvements, each lasting about six years, with significant increases in transistor density per chip.
Researchers at University of Illinois and Argonne National Laboratory will explore magnetic materials to reduce noise in quantum computing hardware. The team aims to design non-reciprocal circuitry by harnessing magnetic features, which could lead to a hybrid device for sensing and communication applications.
Quantum engineers at the University of New South Wales have discovered a new technique to control millions of spin qubits, a critical step towards building a practical quantum computer. This breakthrough uses a novel component called a dielectric resonator to focus microwave power and deliver uniform magnetic fields across the chip.
The DTU researchers have developed a universal measurement-based optical quantum computer platform, enabling the execution of any arbitrary algorithm. The platform is scalable to thousands of qubits and can be connected directly to a future quantum Internet.
Researchers at Nagoya City University have detected strongly entangled pair of protons on a nanocrystalline silicon surface. This breakthrough could enable the creation of more qubits and ultra-fast processing for supercomputing applications, revolutionizing quantum computing.
Researchers in Sweden have developed integrated chips that can generate light particles on demand and without extreme refrigeration. This breakthrough enables deterministic photon emission at room temperature, paving the way for hybrid integration of atom-like single-photon emitters into photonic platforms.
Researchers from QuTech in the Netherlands have established the first multi-node quantum network, connecting three quantum processors and achieving proof-of-principle demonstration of key quantum network protocols. The breakthrough enables the creation of a scalable quantum network that can distribute quantum information over large dis...
Archana Kamal, a physics professor at UMass Lowell, has received over $1 million in funding from the NSF and Air Force for her research on quantum information processing. Her project aims to develop self-correcting qubits using quantum reservoir engineering to address decoherence issues.
Researchers from QuTech at Delft University of Technology successfully demonstrated the control and coupling of four-qubit gates in a two-dimensional array of germanium-based semiconductor qubits. This achievement marks an important step toward dense, extended, two-dimensional semiconductor qubit grids.
A Skoltech researcher has discovered a new model of quantum computation, the variational model, which enables universal computation using limited control over a quantum simulator. This breakthrough bridges the gap between traditional quantum simulators and quantum computers.
Researchers at the University of Science and Technology of China and Tsinghua University successfully implement a five-qubit quantum error correcting code using superconducting qubits. They achieve high fidelity logical state preparation with an average value of 98.6%, verifying the viability of experimental realization of quantum erro...
Germany's Forschungszentrum Jülich and semiconductor manufacturer Infineon join forces to develop a semiconductor-based quantum processor using 'shuttling' of electrons. The QUASAR project aims to scale up quantum computing for industrial production.
Researchers at D-Wave and Google achieve a significant computational performance advantage in simulating the topological phenomena behind the 2016 Nobel Prize in Physics. The study demonstrates that quantum effects can be harnessed to provide a scaling advantage, increasing with both simulation size and problem hardness.
Researchers at Forschungszentrum Jülich and RWTH Aachen University have proposed a circuit for quantum computers that inherently protects against common errors through passive error correction. This design enables the creation of a large number of qubits, crucial for building a universal quantum computer.
Researchers at USC have developed a method to create single photons from quantum dots arranged in a precise pattern, paving the way for the production of optical circuits. This breakthrough has potential applications in quantum communication, imaging, sensing, and computation.
Researchers from PTB and the University of Latvia have developed a statistical testing methodology for single-electron circuits, enabling the investigation of fundamental uncertainties. The new 'random-walk benchmark' provides a robust measure of assessing errors in quantum metrology.
Researchers achieved a novel approach to control the interactions between microwave photons and magnons, enabling on-demand tunability of microwave-magnonic devices. This breakthrough has significant implications for electronic devices and quantum signal processing, potentially leading to advances in both fields.
Researchers at Chalmers University successfully execute QAOA algorithm on 2-qubit quantum computer to solve aircraft route assignment problem, demonstrating potential for practical applications. The algorithm's scalability suggests it could handle larger problems, paving the way for a useful quantum computer.
The Association for Computing Machinery has published the first issue of its new peer-reviewed journal, Transactions on Quantum Computing, focusing on the theory and practice of quantum computing. The journal aims to publish high-impact research papers and surveys on topics in quantum information science.
Researchers from the University of Bristol and Phasecraft have developed new strategies to solve the Fermi-Hubbard model using optimised quantum circuits with limited device size. The study suggests that current supercomputers are unable to solve instances of the model, but near-term quantum devices can.