Watching one leak point rewrites how quantum entanglement spreads

Tracking particle losses at just one point in a quantum wire radically changes how entanglement builds between two halves of the system. Instead of the usual slow logarithmic growth, entanglement shoots up linearly to a volume-law peak — then slowly dies as the system drains. The mechanism mirrors a bias voltage created by the losses themselves, and the setup is practical: only one measurement channel is needed, slashing the postselection cost that typically makes such experiments prohibitive.