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SYLA: Symposium New Trends in Laser Systems and their Applications for Photonic Quantum Systems and Emerging Technologies

SYLA 1: Production Technologies for Integrated Photonic (Quantum) Systems

SYLA 1.2: Invited Talk

Tuesday, March 3, 2026, 11:30–12:00, P 1

Photonic Quantum Sensors and Their Fabrication Using Femtosecond Laser Micromachining — •Tobias Menold — Institut für Strahlwerkzeuge, Universität Stuttgart, Pfaffenwaldring 43, 70569 Stuttgart

Ultrafast lasers are an extremely versatile tool for fabricating integrated devices in transparent materials, particularly in the fields of microelectronics, advanced packaging, and integrated photonics. Their potential is especially relevant in the emerging field of quantum sensing, which is currently transitioning toward industrialization and practical applications. By leveraging ultrafast lasers, it is possible to fabricate nearly all passive components of integrated photonic circuits on glass-based substrates. Furthermore, these circuits can be coupled with quantum sensors, such as vapor-cell-based devices, providing a scalable manufacturing route for miniaturized architectures of quantum sensors. This talk presents an overview of possible manufacturing techniques, illustrated through a demonstrator of a quantum-based gyroscope. Such a device represents a breakthrough in navigation, with transformative applications in autonomous driving, navigation of small aerial vehicles such as drones, and defense-related Positioning, Navigation, and Timing (PNT) capabilities particularly in scenarios where Global Navigation Satellite Systems (GNSS) may be compromised through jamming or spoofing.

Keywords: Femtosecond Laser Micromachining; Quantum Sensors; Photonic Integration