Weak Measurements Could Hold Entanglement Together

Researchers propose interleaving Floquet Hamiltonian engineering with weak measurement so dissipation steers a central-spin system toward a target entangled state. Analytical and numerical results for a semiconductor quantum dot produce spin-squeezed and Schrödinger-cat states stable against modeled dephasing. The approach may generalize to systems with periodic drives and controllable measurement strength, but this paper reports a theoretical construction rather than a demonstrated device.