The OSCAR-QUBE quantum device, measuring only 10 centimeters on each side, has successfully mapped Earth's magnetic field from the International Space Station. Its core is a diamond with defects in the carbon lattice that act as quantum sensors. Over ten months, its measurements matched previous estimates, demonstrating reliability in space.
How an imperfect diamond detects magnetic fields 🧲
The sensor uses defects in the diamond, known as NV centers, which behave like quantum particles. When irradiated with laser and microwaves, they emit light whose intensity varies according to the magnetic field. This allows measuring subtle changes in Earth's field. The data, collected between 2021 and 2022, was published in Physical Review Applied, validating the technology for future space missions.
The gemstone that is not suitable for engagement rings 💍
While humanity spends fortunes on diamonds for fingers, scientists use them to measure magnetic fields from space. OSCAR-QUBE demonstrates that a diamond with defects is worth more than a perfect one. At least this one won't end up lost on a beach or pawned due to a bad decision. Next time you see a brilliant, remember: it could be mapping the planet.