A quantum simulator mimics a real magnet ⚡ экспресс
Objective: to apply an analog quantum simulator with 256 Rydberg qubits to describe a real frustrated magnet, TmMgGaO₄, going beyond model Hamiltonians. Method: an effective Hamiltonian of the material was realized, magnetization curves were measured, and a frame-by-frame analysis of quantum states was performed. Result: quantitative agreement with single-crystal magnetic susceptibility data was achieved, the antiferromagnetic transition was confirmed, and it was shown that the intermediate paramagnetic regime is governed by quantum fluctuations, not disorder. Significance: after verifying equilibrium properties, the simulator was used to study nonequilibrium dynamics following a sudden quench, on picosecond timescales where the growth of entanglement entropy renders the problem classically intractable. Thermalization of local observables was observed, demonstrating the ability of analog quantum simulation to reproduce and extend the physics of real materials.
A three-seat swing never stops: one rider is always left hanging. That’s a frustrated magnet—a perpetual dance with no rest. To study it, physicists built a quantum simulator from 256 atoms, meticulously mimicking the crystal TmMgGaO₄.
The simulator showed the same magnetic behavior as the real material. But the big surprise—in the twilight zone between order and chaos, it’s not crystal defects but quantum jitters that rule. Moreover, when the simulator was given a sudden jolt, it evened out its temperature in trillionths of a second. This process comes with an explosive growth of entanglement—and just as dramatically, entropy surged.
So this quantum doppelgänger doesn’t just copy reality—it peers into its most fleeting moments, where ordinary computers are powerless.
🎯 The natural mineral Herbstite is a real frustrated magnet: when cooled, its magnetic moments flow like a liquid even though the crystal stays solid.