Piezoelectric optomechanical approaches towards quantum microwave-to-optical signal transduction: the need for co-design
Krishna Coimbatore Balram, Kartik Srinivasan
Piezoelectric optomechanical platforms represent one of the most promising routes towards achieving quantum transduction of photons between the microwave and optical frequency domains. However, there are signif icant challenges to achieving near-unity transduction efficiency. We discuss such factors in the context of the two main approaches being pursued for high efficiency transduction. The fi rst approach uses one-dimensional nanobeam optomechanical crystals excited by interdigitated transducers, and is characterized by large single-photon optomechanical coupling strength, limited intracavity pump photon population to avoid absorption-induced heating, and low phonon injection efficiency from the transducer to the optomechanical cavity. The second approach uses (quasi) bulk acoustic wave resonators integrated into photonic Fabry-Perot cavity geometries, and is characterized by low single-photon optomechanical coupling strength, high intracavity pump photon population without signifi cant heating, and high phonon injection efficiency. After reviewing the current status of both approaches, we discuss the need for co-designing the electromechanical and optomechanical sub-systems in order to achieve high transduction efficiencies, taking the GaAs piezo-optomechanical platform as an example.
Coimbatore Balram, K.
and Srinivasan, K.
Piezoelectric optomechanical approaches towards quantum microwave-to-optical signal transduction: the need for co-design, Advanced Quantum Technologies, [online], https://doi.org/10.1002/qute.202100095, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932754
(Accessed December 1, 2023)