Working with theorists in the University of Chicago’s Pritzker School of Molecular Engineering, researchers at the US Department of Energy’s (DOE) Argonne National Laboratory gained scientific supervision, the first of its kind. They demonstrate a new method that allows for real-time control of the interactions between photons, microwaves and magnesium, which could lead to advances in electronic devices and quantum signal processing.
Microwave photons are elementary particles that generate electromagnetic waves that we use for wireless communication. Magnets, on the other hand, are elementary particles that produce what scientists call “spin waves” – wave-like disturbances in microscopic arrays of rotations that can occur in some magnetic materials.
Microwave photon-magnon interactions have emerged in recent years as a promising platform for both classical and quantum data processing. Yet, this interaction proved unmanageable in real time until now.
“Before our discovery, controlling the photon-magnon interaction was like shooting an arrow into the air,” said Xufeng Zhang, assistant scientist in the Center for Nanoscale Materials, DOE User Facility at Argonne, and associate author of the work. This said “No one can control that arrow even once in flight.”
The team’s discoveries changed that. “Now it’s like flying a drone that we can navigate and electronically control its flight,” Zhang said.
Through intelligent engineering, the team used electrical signals to periodically modify the magnon’s vibration frequency and to produce powerful photon-photon interactions. The result is the first large-sized microwave device to be customized.
The team’s devices were able to control the strength of the photon-maxon interaction at any point as data was transferred between the photon and the maxon. It can even turn the interaction on and off completely. With this tuning capability, scientists can process and manipulate data in ways that are far superior to today’s hybrid magnetics.
“Researchers have been searching for ways to control this interaction over the past few years,” Zhang said. The team’s discovery opens up a new direction for Magnon signal processing and should lead to electronic devices with new capabilities. It may also enable significant applications for quantum signal processing, exploring large-scale microwave interactions as a promising candidate for the transfer of information between various quantum systems.
The DOE Office of Basic Energy Sciences supported this research, published in the Physical review letter.
Scientists Pair Magnetic Attraction with Superconducting for Quantum Discovery
Jing Xu and Floquet Cavity Electromagnetic Board Physical review letter (2020). DOI: 10.1103 / PhysRevLett.125.237201
Operated by Argonne National Laboratory
Reference: Key findings in quantum and classical data processing (2021, January 13) .Retrieved January 13, 2021 from https://phys.org/news/2021-01-pivotal-discovery-quantum. -classical.html
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