Quantum entanglement is a prerequisite for a wide variety of emerging quantum technologies, such as secure quantum communications or quantum computing. As photons, i.e. quanta of light, can propagate very fast while carrying quantum information, the generation of entanglement between pairs of photons via nonlinear optics is an established procedure. The groups of Birgit Stiller and Claudiu Genes at the Max Planck Institute for the Science of Light have recently tackled the question of establishing entanglement between very different entities such as traveling sound waves, i.e. phonons and optical photons. The proposed optoacoustic entanglement scheme, recently published in Physical Review Letters, is based on stimulated Brillouin scattering and is particularly resilient, ready to integrate into quantum signal processing schemes and implementable at high environmental temperatures.
For more information, see their publication in Physical Review Letters:
Optoacoustic entanglement in a continuous Brillouin-active solid state system
Changlong Zhu, Claudiu Genes, and Birgit Stiller
Physical Review Letters 133, 203602 (2024)
Quantum entanglement is a prerequisite for a wide variety of emerging quantum technologies, such as secure quantum communications or quantum computing. As photons, i.e. quanta of light, can propagate very fast while carrying quantum information, the generation of entanglement between pairs of photons via nonlinear optics is an established procedure. The groups of Birgit Stiller and Claudiu Genes at the Max Planck Institute for the Science of Light have recently tackled the question of establishing entanglement between very different entities such as traveling sound waves, i.e. phonons and optical photons. The proposed optoacoustic entanglement scheme, recently published in Physical Review Letters, is based on stimulated Brillouin scattering and is particularly resilient, ready to integrate into quantum signal processing schemes and implementable at high environmental temperatures.
For more information, see their publication in Physical Review Letters:
Optoacoustic entanglement in a continuous Brillouin-active solid state system
Changlong Zhu, Claudiu Genes, and Birgit Stiller
Physical Review Letters 133, 203602 (2024)