The Synchronous Dance of Quantum Tops ⚡ экспресс
Synchronization as a robust many-body quantum phenomenon remains poorly understood. The experiment demonstrates SU(2)-symmetry-protected quantum synchronization and a quantum chimera state within coherent Floquet dynamics on programmable superconducting quantum processors. Stroboscopic evolution of a 2D Heisenberg model on heavy-hex lattices leads to spontaneous self-organization of spins into coherent oscillations. On 28 qubits, synchronization withstands strong randomization and breaks only when symmetry is disrupted. At 156 qubits, a qualitatively new regime emerges: with weak initial chaos, global synchronization; with strong chaos, coexistence of global desynchronization and local phase coherence (quantum chimera). Numerical simulations (statevector and MPS) confirm these phenomena stem from many-body Floquet dynamics, making such non-equilibrium phases accessible for experiments.
Physicists took 28 quantum tops—particles with intrinsic spin—and ran a cyclic process on a quantum computer predicted by Werner Heisenberg nearly a century ago. At first, each top spun however it pleased. But after a few cycles, their wobbles aligned: without any external force, they whirled in unison—order emerged from disorder.
The secret to synchronization is a hidden symmetry, reminiscent of a rule that lets tops spin in any direction yet still "agree." Once the symmetry was broken, the collective dance fell apart. Thus, symmetry protects harmony in the quantum world—a principle that also pervades the standard model of particles.
But the real surprise came with 156 tops. With a small initial spread, all synchronized. But with a large spread, a quantum chimera formed: within small groups, tops spun together, while the rest remained disordered. It's like a crowd of pedestrians where some groups walk in step while others move chaotically, even though the rules of movement are the same for all. Such a mix of order and chaos has been seen before in lasers and chemical reactions, but at the quantum level, it paves the way for ultra-stable devices.
🎯 Chimera states—a blend of order and chaos—were long considered a curiosity, but were later found in chemical reactions, lasers, and even pedestrian behavior.
🎬 In Peter Watts' 'Blindsight,' the collective mind resembles a quantum chimera: its parts act independently but form a unified whole.