Quantum entanglement of the same type of photons is a well-known procedure. However, researchers at the Max-Planck-Institute (MPL) for the Science of Light propose a novel way to entangle optical photons (particles that make light) with phonons (quasiparticles that represent sound waves).
This approach represents a significant step in quantum entanglement as it shows that it is possible to establish hybrid systems with different types of fundamental particles connected to each other over a large distance.
The entanglement of hybrid systems is crucial for the development of state-of-the-art quantum communication and quantum computing applications.
“The proposed optoacoustic (light+sound) entanglement scheme is based on Brillouin scattering. It is particularly resilient, suitable for integration into quantum signal processing schemes, and implementable at high environmental temperatures,” the MPL team notes.
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