Continuous Protection of a Collective State from Inhomogeneous Dephasing
Continuous Protection of a Collective State from Inhomogeneous Dephasing
We introduce and demonstrate a scheme for eliminating the inhomogeneous dephasing of a collective quantum state. The scheme employs off-resonant fields that continuously dress the collective state with an auxiliary sensor state, which has an enhanced and opposite sensitivity to the same source of inhomogeneity. We derive the optimal conditions …