Physicists Have Found a Radical New Way to Entangle Light And Sound : ScienceAlert

Physicists Changlong Zhu, Claudiu Genes, and Birgit Stiller of the Max Planck Institute for the Science of Light in Germany have called their proposed new system optoacoustic entanglement.

But the delicate quantum state required for these processes can be easily broken, a problem that has curtailed its realization in practical applications.

What makes this even more interesting is that it can be achieved at higher temperatures than standard entanglement approaches, bringing entanglement out of the cryogenic zone and potentially reducing the need for expensive, specialized equipment.

It requires further investigation and experimentation, but it’s a promising result, the researchers say.

“The fact that the system operates over a large bandwidth of both optical and acoustic modes,” they write, “brings a new prospect of entanglement with continuum modes with great potential for applications in quantum computation, quantum storage, quantum metrology, quantum teleportation, entanglement-assisted quantum communication, and the exploration of the boundary between classical and quantum worlds.”

The research has been published in Physical Review Letters.