Sanchar Sharma
Magnons have recently emerged as promising candidates for quantum technologies, including sensing and transduction. Developing these applications requires quantum-coherent methods for probing magnons. In this talk, I will discuss, theoretically, on how to measure quantum states of magnons using optical light. Brillouin light scattering (BLS) is a well-established classical technique for probing magnons known for its high sensitivity and temporal resolution. We explore the efficacy of BLS for quantum tomography of magnons. We find that in the state-of-the-art setups, it is feasible to reconstruct the 'classical component' of magnons, i.e. regions of positive Wigner function. I will also discuss techniques to overcome this limitation to achieve a faithful quantum tomography.