United KingdomResearchers at ETH Zurich have developed a new method using a single ion to detect and map three-dimensional electromagnetic fields above a chip's surface with high precision. This technique involves trapping a single ion near the chip's surface and manipulating it with a Penning trap, which combines static electric and magnetic fields. By cooling the ion to its lowest quantum mechanical state and moving it precisely over the chip, scientists can measure minute electromagnetic fluctuations caused by the chip itself. These findings could lead to improvements in quantum computing and sensing technologies by enabling more accurate testing and optimization of chip materials.
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