Quantum Material Multilayer Photonic Devices and Network

Summary 

Realizing highly integrated quantum photonic devices on a chip can enable new opportunities for photonic quantum computation. In this project, we explore heterostructures of stacked two-dimensional (2D) materials, such transition metal dichalcogenides (TMDC) or graphene, combined with optical microcavities as a platform for such devices. 2D materials are extremely thin and flexible, and have emerged as a host for a range of exciting new quantum phenomena, in particular when different 2D materials are stacked together. We plan to address the challenges of stacking more than two layers of 2D materials and of extending the stacking methods to produce wafer-scale structures, as well as the challenges of making this platform compatible by with CMOS infrastructure for future integration towards large-scale quantum photonic computation and networks. We will achieve our goal through an interdisciplinary effort involving deep physical and chemical knowledge, state-of-the-art nanofabrication processing techniques and facilities, extensive material and device characterization measurements, and theoretical investigations.

Figure 1. The calculated absorption spectra of a cavity containing a heterostructure made of multi-colour emitting layers. The three anti-crossings are a manifestation of strongly-coupled polariton states.