PIC-based tunable diode lasers for fieldable quantum applications

Lasers are fundamental to quantum technologies, enabling applications in computing, communication, and sensing. However, to transition from lab-grade systems to real-world deployment, quantum technologies require low-SWaP (Size, Weight, and Power), industry-grade laser sources that support scalability, high-volume manufacturability, seamless integration, and often field deployability. Overcoming these challenges is critical to commercializing quantum systems. Here, we discuss a low-SWaP laser system based on PICs and programmable control electronics aimed towards near-infrared quantum applications such as rubidium atomic clocks and Rydberg sensors. The system achieves the optical power, linewidth, and mode-hop-free tuning range required for such stringent applications while significantly reducing size and complexity. By addressing key scalability and deployability challenges, this technology paves the way for practical quantum applications from low-SWaP quantum sensing and metrology systems to scalable quantum computing and communications.