Quantum Optics Devices on a Chip

12Integrated Light Sources

Uzma Hira^* and Muhammad Nayab Ahmad

School of Physical Sciences (SPS), University of the Punjab, New Campus, Lahore, Pakistan

Abstract

Integrated light sources revolutionize applications with high efficiency and energy savings. Photonic quantum technologies offer an excellent platform for applications such as communications over long distances and complex phenomena simulation. Single photons provide advantages for carrying quantum information in various areas. Recent improvements in technology allow optoelectronic processing of quantum data to be utilized in the first real-world applications. On-chip silicon light sources are crucial in photonic technologies. III-V-based lasers show the best performance, but direct hetero-epitaxial growth on silicon is promising. Quantum dots and germanium-on-silicon lasers are highly efficient, low-cost, and offer the potential for large-scale integration. This study proposes a tunable quantum light source, enabling on-demand tuning of spatial photon-pair correlations and entanglement in a nonlinear directional coupler for practical quantum information applications. Hybrid integrated platforms for Si photonics, incorporating III-V semiconductors on substrates made of silicon-on-insulator using inorganic materials or organic bonding agents, offer promising technology for high-performance devices on low-cost wafers. Moore’s law has been improved through innovative features and scaling of CMOS silicon, leading to a ...