LAMP-SEMINAR

I’m excited to invite you to my upcoming seminar where I will be presenting a focused talk on how my expertise in Quasi-Phase Matched (QPM) device fabrication can directly enhance the ongoing research at Raman Research Institute. One of the most pressing challenges in India’s quantum photonics landscape is our continued dependence on imported QPM devices from international companies such as Raicol (Israel), HC Photonics (Taiwan), and Covesion (UK). This reliance not only inflates research costs but also limits the adaptability and precision required for advanced quantum experiments.

My work aims to change this. By establishing a state-of-the-art domestic facility for QPM device fabrication, we can take full control of the design, domain engineering, and optimization of these nonlinear optical devices. Such a shift would not only reduce costs but also enable tailored solutions for specific quantum applications. In conversations with the QuIC team, I gained important insights into the current limitations in their QKD and quantum teleportation systems, particularly those stemming from the fixed properties of off-the-shelf QPM crystals. With direct fabrication capabilities, we can overcome these barriers by engineering devices with narrower spectral outputs, optimized phase-matching conditions for simultaneously generating multiple wavelengths, and customized poling periods. This would significantly improve visibility, coincidence counts, spectral purity, and reduce bit error rates in quantum communication systems. My presentation will explore specific design strategies with respect to simultaneous RGB generation and polarization-based entanglement sources such as:

1. Precision control of poling periods for targeted phase-matching with respect to simultaneous RGB generation and polarization entangled photon sources.
2. Techniques to improve domain uniformity and suppress fabrication-induced defects.
3. Domain engineering to meet the requirements of quantum entanglement-based optical experiments. 

In-house fabrication capabilities also unlock the potential for rapid prototyping and iterative improvements, critical for experimental flexibility and long-term scalability. Moreover, this paves the way for domestic commercialization of QPM-based photonic components, positioning India as a global player in the quantum technology market. I firmly believe that this direction, linking fabrication expertise directly to experimental needs, is essential for advancing quantum research in India. I look forward to sharing these ideas in detail during the seminar and discussing how collaborative efforts can transform RRI’s capabilities and contribute to national self-reliance in quantum photonic technology.