Abstract

This review summarizes recent advances in GaAs/AlAs acoustic nanocavities for GHz–THz phonon engineering, emphasizing distributed Bragg reflector architectures, micropillar resonators, ultrafast optical probing, and coherent phonon generation, detection, and manipulation. It highlights the advantages of GaAs/AlAs heterostructures for strong acoustic confinement, optoacoustic coupling, and hybrid quantum device integration, while outlining challenges and future directions for nonlinear phononics, scalable control, and integrated phononic circuits.

Abstract

This review summarizes recent advances in GaAs/AlAs acoustic nanocavities for GHz–THz phonon engineering, emphasizing distributed Bragg reflector architectures, micropillar resonators, ultrafast optical probing, and coherent phonon generation, detection, and manipulation. It highlights the advantages of GaAs/AlAs heterostructures for strong acoustic confinement, optoacoustic coupling, and hybrid quantum device integration, while outlining challenges and future directions for nonlinear phononics, scalable control, and integrated phononic circuits.

Abstract

This review summarizes recent advances in GaAs/AlAs acoustic nanocavities for GHz–THz phonon engineering, emphasizing distributed Bragg reflector architectures, micropillar resonators, ultrafast optical probing, and coherent phonon generation, detection, and manipulation. It highlights the advantages of GaAs/AlAs heterostructures for strong acoustic confinement, optoacoustic coupling, and hybrid quantum device integration, while outlining challenges and future directions for nonlinear phononics, scalable control, and integrated phononic circuits.

Abstract

This review summarizes recent advances in GaAs/AlAs acoustic nanocavities for GHz–THz phonon engineering, emphasizing distributed Bragg reflector architectures, micropillar resonators, ultrafast optical probing, and coherent phonon generation, detection, and manipulation. It highlights the advantages of GaAs/AlAs heterostructures for strong acoustic confinement, optoacoustic coupling, and hybrid quantum device integration, while outlining challenges and future directions for nonlinear phononics, scalable control, and integrated phononic circuits.