A Helmholtz-Zentrum Dresden-Rossendorf research team has controlled qubits using magnons, magnetic wave-like excitations in microscopic magnetic disks.
Bejarano, Mauricio. Although quantum information computation has received a lot of attention, information transmission within quantum networks is just as important to realize the promise of this emerging technology.
“To date, the quantum engineering community has not yet realized that magnons can be used to control qubits. But our experiments demonstrate that these magnetic waves could indeed be useful,” said Helmut Schultheiß, a physicist at HZDR, who supervised the work, in a statement.Developing a universal, programmable quantum computer is one of the most difficult scientific and engineering projects of our day.
“However, this poses the problem of transferring the quantum information between the modules so that the information doesn’t go missing,” said Mauricio Bejarano, a researcher at HZDR and the study’s first author, in a The team plans to address qubits with magnons, which can be considered magnetic excitation waves that pass through a magnetic material.
According to the team, microwave antennas are usually used to create magnons. It is exceedingly challenging to distinguish between the microwave drive originating from the antenna and the one originating from the magnons.
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'Quantum memory breakthrough' may lead to a quantum internetPeter is a degree-qualified engineer and experienced freelance journalist, specializing in science, technology and culture. He writes for a variety of publications, including the BBC, Computer Weekly, IT Pro, the Guardian and the Independent. He has worked as a technology journalist for over ten years.
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