Hitherto a mystery, the thermal energy loss of qubits can be explained with a surprisingly simple experimental setup, according to research from Aalto University.
Tag: quantum devices
Studying Loss to Make Quantum Computing Gains
Scientists from Yale University and the U.S. Department of Energy’s (DOE) Brookhaven National Laboratory have developed a systematic approach to understanding how energy is lost from the materials that make up qubits. Energy loss inhibits the performance of these quantum computer building blocks, so determining its sources — and adjusting the materials as necessary — can help bring researchers closer to designing quantum computers that could revolutionize several scientific fields.
Understanding the Tantalizing Benefits of Tantalum for Improved Quantum Processors
Researchers working to improve the performance of superconducting qubits, the foundation of quantum computers, have been experimenting using different base materials in an effort to increase the coherent lifetimes of qubits. The coherence time is a measure of how long a qubit retains quantum information, and thus a primary measure of performance. Recently, scientists discovered that using tantalum in superconducting qubits makes them perform better, but no one has been able to determine why—until now.
Researchers take a step towards turning interactions that normally ruin quantum information into a way of protecting it
Rresearchers at Aalto University in Finland and IAS Tsinghua University in China report a new way to predict how quantum systems, such as groups of particles, behave when they are connected to the external environment. Usually, connecting a system such as a quantum computer to its environment creates decoherence and leaks, which ruin any information about what’s happening inside the system. Now, the researchers developed a technique which turns that problem into its a solution.
Scientists take first snapshots of ultrafast switching in a quantum electronic device
Scientist demonstrated a new way of observing atoms as they move in a tiny quantum electronic switch as it operates. Along the way, they discovered a new material state that could pave the way for faster, more energy-efficient computing.
New Phenomena for the Design of Future Quantum Devices
Research has shown that the topology of the electronic states in a Weyl semimetal can leave fingerprints on their phonon properties. This happens because of a type of electron-phonon interaction called the Kohn anomaly that impacts how electrons screen phonons through a material. This instability can lead to new electronic properties in materials.
Brookhaven Lab to Lead Quantum Research Center
The U.S. Department of Energy Office of Science has selected Brookhaven National Laboratory to lead one of five National Quantum Information Science Research Centers. Through hardware-software co-design, the center—called the Co-design Center for Quantum Advantage—will advance quantum computing.
Scientists Dive Deep Into Hidden World of Quantum States
A research team led by the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) has developed a technique that could lead to new electronic materials that surpass the limitations imposed by Moore’s Law.