A study by Macquarie University researchers reveals that grape pairs amplify magnetic fields when exposed to microwaves, paving the way for compact and cost-effective quantum sensors.
A recent study has revealed that grape pairs create localized hotspots of magnetic fields when exposed to microwaves. This discovery, made by a team at Macquarie University in Sydney, builds upon viral videos showcasing grapes producing plasma, charged particles, within microwave ovens.
While previous research focused on the electrical fields responsible for the plasma effect, this study highlights the grapes' ability to enhance magnetic fields, a crucial element for quantum sensing applications. Grape pairs, or similar water-based structures, function as microwave resonators, trapping electric fields due to their shape and high permittivity. Sparks arise when plasma forms from metallic ions within the grapes. This phenomenon has sparked interest in exploring its potential for technical applications requiring strong microwave field enhancement. Microwave resonators, utilized in technologies like satellites, masers, and quantum systems, confine fields to small areas. In quantum applications, they influence systems like spin qubits via magnetic fields. The Macquarie team's research focused on the magnetic field effects important for quantum applications, contrasting earlier studies that concentrated on electrical fields. They utilized specialized nano-diamonds with nitrogen-vacancy centers, atomic-scale flaws that act as quantum sensors. These flaws, responsible for the color of diamonds, can detect magnetic fields and behave like miniature magnets
QUANTUM SENSING MAGNETIC FIELDS MICROWAVES GRAPE PAIRS NANODIAMONDS
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