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Learn how to build a state-of-the-art quantum sensor using common off-the-shelf parts and nitrogen-vacancy center diamond in this 44-minute DEF CON 33 conference talk. Discover the fundamentals of quantum sensing technology without requiring a physics PhD, as the speakers demonstrate the construction of the first fully open source, hackable quantum sensor that measures magnetic fields with light. Explore the technical requirements, signal extraction methods from diamond samples, and practical applications ranging from medical technology to GPS jamming countermeasures. Gain insights into using these sensors for chip behavior analysis through magnetometry and understand how quantum sensing represents an accessible quantum technology available today, unlike quantum computing which remains in development. Follow along with the main demonstration of the Quantum Village Badge project, designed for the International Year of Quantum, and learn how to push the boundaries of this emerging technology from your own garage workshop.
