Magnons in a sphere squeezed to quantum limit ⚡ экспресс
Original: "Magnon squeezing in the quantum regime"
Physicists have squeezed quantum noise in magnons of a visible crystal for the first time.
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A tiny magnetic sphere was made to oscillate so that its quantum noise was squeezed almost to zero. The same trick helps gravitational-wave detectors listen to the Universe. Now squeezed magnons could lead to ultra-sensitive sensors and quantum networks based on magnetic waves.
🎯 A magnon isn't a particle but a quantum of a collective wave: trillions of spins move together, like spectators in a stadium doing the wave in sync.
\Delta x \, \Delta p \ge \frac{h}{4\pi}
Uncertainty principle: the more precisely a particle's position is measured, the greater the spread in its momentum. Squeezing reduces the blur of one parameter at the expense of the other.