A quantum system can be cooled into a state of perfect entanglement by intentionally letting it decay and leak energy.
Noise and energy loss are usually the enemies of quantum computing because they break the delicate links between particles. This experiment uses a kinetically constrained process where that very decay is the engine that builds the quantum state. By carefully managing how the system loses energy, researchers can stabilize long-lived entanglement without any external lasers or power. This turns the problem of quantum noise on its head by making it the primary tool for construction. It offers a much more robust way to maintain the links needed for future quantum networks. This could be the key to making quantum computers work in messy, real-world environments.
Kinetically constrained superradiance
arXiv · 2605.05343
We introduce kinetically constrained superradiance, a form of cooperative emission in which interactions imprint configuration-dependent energy shifts on optical transitions, splitting Dicke superradiance into multiple, frequency-resolved collective decay channels. Each channel selectively radiates from distinct many-body spin configurations, generating a hierarchy of dissipative time scales and sequential relaxation dynamics. Unlike conventional superradiance, where permutation symmetry enforce