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Quantum sensing technologies are enabling new levels of measurement sensitivity in applications ranging from brain imaging to navigation and geophysical exploration. In this video, Michael Semmlinger from Hamamatsu's Quantum Sensing Team explains how vapor cell technology forms the foundation of modern quantum sensors. Hamamatsu leverages decades of expertise in glass fabrication, vacuum technology, and alkali vapor control to develop both glass-blown vapor cells and MEMS vapor cells that can be integrated into advanced sensing systems. The video introduces the optically pumped magnetometer (OPM)—a highly sensitive quantum sensor capable of detecting extremely small magnetic fields in the femtotesla range. One of the most important applications of this technology is magnetoencephalography (MEG), which measures magnetic signals produced by brain activity. Unlike traditional superconducting systems, OPM-based sensors operate without cryogenic cooling, enabling more compact and flexible brain imaging systems. Additional emerging applications for optically pumped magnetometers include: navigation systems, geological surveying, and precision magnetic field measurements The video also highlights new developments in vapor-cell-based atomic clocks and a compact laser lock module that provides a stable frequency reference for lasers used in quantum sensing experiments. If you are developing applications that require high-precision magnetic sensing, atomic timing, or quantum measuremen
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