Phys.org August 26, 2024
Coherent quantum control is an essential tool for understanding and mitigating decoherence. Characterizing and controlling orbital states is a central challenge for quantum networking, where optical coherence is tied to orbital coherence. Researchers at Cornell University studied resonant multi phonon orbital Rabi oscillations extracting the strength of the orbital-phonon interactions and the coherence of the acoustically driven orbital states. They reached the strong-driving limit, where the physics was dominated by coupling induced by the acoustic waves. They found agreement between their measurements, quantum master-equation simulations, and a Landau-Zener transition model in the strong-driving limit. They modeled the orbital decoherence and found good agreement between their model and their measured few-to-several-nanoseconds orbital decoherence times. They discussed the outlook for orbital decoherence protection… read more. Open Access TECHNICAL ARTICLE
A bulk acoustic wave resonator on diamond for acoustic orbital control… Credit: PRX Quantum 5, 030336 , 19 August 2024