Driven by the exponential growth of data creation and consumption, there is a constant effort to integrate telecom networks on-chip. Silicon photonics is a promising platform, thanks to the mature CMOS technology. However, silicon, being an indirect bandgap is not an ideal candidate for active on-chip photonic devices including light sources, modulators, and photodetectors, which generally require optical materials with direct bandgap. In contrast, hybrid materials and heterogeneous integration solutions offer an alternative, when combined with mature and low-cost CMOS fabrication technology such as Si/SiN photonics. Here, 2-dimensional (2D) materials such as graphene, black phosphorous and transition metal dichalcogenides (TMDCs) enable to greatly simplify the integration on photonic chip by the advent of sufficiently strong van der Waals (vdW) force, offering rich variety of physical properties for novel functional devices for on-chip photonics. 

Achieving scalable indistinguishable photon sources is crucial for building large-scale quantum systems and networks. They play a crucial role in quantum communication, quantum cryptography, and quantum computation by providing the necessary quantum states for quantum gates, entanglement generation, and secure communication protocols. Recently, 2D materials based quantum emitters, such as defects in hexagonal Boron Nitride or quantum dots in TMDs, emerged as a promising candidate for high-quality single-photon sources. Here, our research aims to create deterministic arrays of indistinguishable single photon source at room temperature. 

Non-volatile programmable photonics refers to the development of photonics-based devices and systems that can be configured and controlled without the need for a continuous power source and retain their programmed settings even when power is removed. This technology typically relies on non-volatile memory elements, such as phase change materials (PCMs), which can switch between amorphous and crystalline states, making PCMs attractive for reconfigurable photonic devices. By exploiting their ability to change optical properties in response to short optical or electrical pulses, such as altering refractive indices or reflectivity, researchers have unlocked new avenues for data processing and storage.