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Scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have discovered that adding a layer of magnesium improves the properties of tantalum, a superconducting material that shows great promise for building qubits, the basis of quantum computers.
Researchers at the DOE’s Brookhaven National Laboratory in the United States have found that a coating of magnesium enhances the characteristics of tantalum, a superconducting material with a lot of potential for creating qubits, the building blocks of quantum computers.
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.
Whether it’s baking a cake, building a house, or developing a quantum device, the quality of the end product significantly depends on its...
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