Articles tagged with Josephson Junctions
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A team of researchers from Yokohama National University has developed a novel compact superconductive neuron device that operates at high speeds with ultra-low power consumption. The device eliminates variation in elemental circuit characteristics, achieving ideal input-output characteristics and resolving the vanishing gradient problem.
Researchers at the Niels Bohr Institute created an intermediate state between superconductor and total insulation by controlling quantum fluctuations in tiny superconducting islands. This 'anomalous metallic regime' is a crucial step toward more controllable and reliable quantum devices.
Researchers have created a superconducting Josephson probe microscope that combines high sensitivity, resolution, and low bias magnetic fields. The device enables spatial-resolved microwave imaging with sub-micrometer resolution, making it suitable for applications in quantum computing, magnonics, and high-frequency electronics.
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.
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 successfully controlled Andreev bound states in bilayer graphene-based Josephson junctions using gate voltage, observing changes in real-time and confirming theoretical predictions. The discovery enables adjustment of energy levels, opening potential for diverse applications.
A team of researchers has revised the fundamental equation for superconducting quantum bits, revealing that harmonics are superimposed on the fundamental mode, resulting in corrections that can lead to quantum bits that are 2-7 times more stable. Experimental evidence from multiple laboratories supports this finding.
A team of researchers reviewed the superconducting diode effect, which enables dissipationless supercurrent flow in one direction. The study highlights potential applications for quantum technologies in both classical and quantum computing.
A University of Minnesota team developed a new superconducting diode that is more energy efficient and versatile than past models. The device can process multiple electrical signals at once and has gates to control the flow of energy, which could enable faster quantum computers for industry use and enhance AI performance.
Scientists have developed a solution to communication challenges in neuromorphic chips using superconducting devices. This allows artificial neural systems to operate 100,000 times faster than the human brain, with potential applications in industrial control and human conversations.
Scientists at Delft University of Technology have discovered one-way superconductivity using 2D quantum materials, enabling superconducting computing and reducing energy loss. This breakthrough could lead to faster electronics, greener IT systems, and significant energy savings.
A Korean research team has demonstrated the anisotropic superconductivity of a high-temperature superconductor by stacking twisted pieces of Bi2Sr2CaCu2O8+x using the microcleave-and-stack technique. This study confirms material properties and develops a new fabrication method for nanomaterials.
Researchers developed an all-nitride superconducting qubit using niobium nitride on a silicon substrate, achieving long coherence times of up to 22 microseconds. The breakthrough paves the way for large-scale integration and potential applications in quantum computers and nodes.
Researchers at MIT have developed a stable, easy-to-make superconducting transistor using nanowires. The new technology could overcome the disadvantages of existing superconducting devices, such as high cost and complexity, and find applications in quantum computers, telescopes, and energy-hungry electronics.
A new atomtronic device is being developed to test the boundary between the quantum and classical worlds. The device uses neutral atoms instead of charged electrons to create a superconducting quantum interference device (SQUID), which can detect mechanical rotation with high sensitivity.
Researchers have discovered a new higher-order topological insulator, WTe2, which exhibits metallic hinge states and is promising for spintronics. The team used Josephson junctions to visualize the supercurrent flow and found evidence of hinge states on the sides of the material.
A team of researchers from the University of Jyvaskyla and others have studied the out-of-equilibrium dynamical state induced by microwave photon absorption in diffusive Superconductor-Normal metal-Superconductor junctions. Strong anharmonicity of the current-phase relation arises under illumination, driven by non-adiabatic transitions.
Researchers have developed a new device that exhibits topological superconductivity in planar structures, a key step towards scaling up quantum computing. This breakthrough combines semiconductor and superconductor materials to create a robust technology that could aid the development of fault-tolerant quantum computers.
Researchers at NIST have built a superconducting switch that learns like a biological system, connecting processors and storing memories in future computers operating like the human brain. The synapse can process incoming electrical spikes to customize spiking output signals, using less energy than the human brain.
Researchers from Italy have devised a novel method to convert low-frequency signals into higher frequencies using Nobel Prize-winning Josephson junctions. The approach produces voltage pulses containing hundreds of harmonics, enabling the creation of smaller and more efficient signal generators.
Researchers have developed a new method to create oxide Josephson junctions, which could lead to high-temperature superconducting electronics. The direct-write approach allows for mass production of high-quality junctions, reducing costs and enabling applications such as biomedical magnetic imaging.
Researchers at UC San Diego have developed a new method to control electrical transport through high-temperature superconductors, enabling the creation of sophisticated electronic devices capable of measuring tiny magnetic fields in the brain or heart. This breakthrough paves the way for improved satellite communications and novel tech...
The nanocryotron device uses a single layer of niobium nitride deposited on an insulator to create a simple superconducting circuit. By controlling the flow of current through the circuit, it can act as a switch, making it a potential component for digital computers.
Researchers have successfully observed the quantum phase transition of a superconductor-to-metal type in a graphene-based hybrid system. The system, consisting of tin nanodisks on a graphene substrate, exhibits a sharp drop in temperature at which the spatial phase coherence is destroyed solely by quantum fluctuations.
Researchers at KIT have developed a method to control atomic tunneling frequencies in solids, using Josephson junctions. The technique allows for the direct measurement and manipulation of individual quantum systems, opening new possibilities for nanoelectronic components and materials science research.
Researchers at Argonne National Laboratory have created a compact device that can generate terahertz radiation, a non-ionizing form of electromagnetic radiation. This technology has the potential to enhance airport security by detecting hazardous substances and identify certain types of cancers through imaging capabilities.
Researchers at Georgia Institute of Technology have discovered a phenomenon that allows measurement of mechanical motion in nanostructures using the AC Josephson effect. The technique enables the identification and characterization of structural and mechanical properties of nanoparticles, including those of biological interest.
The National Institute of Standards and Technology has developed a new precision instrument for directly measuring AC voltages, which is expected to improve measurement accuracy by 1,000-fold at low voltages. The instrument uses Josephson junction technology to generate precise AC pulses over a range of audio frequencies.
Researchers have successfully created artificial atoms using superconducting materials, allowing for the measurement of quantum properties in two interconnected devices. This breakthrough enables the development of simple logic operations using artificial atoms, a crucial step toward building superconducting quantum computers.
Researchers at UC Berkeley create a superfluid analog of superconducting SQUID, detecting quantum oscillations in helium-3 and measuring tiny changes in rotation. This breakthrough enables potential ultrasensitivity in gyroscopes and testing predictions from Einstein's general theory of relativity.