Decay and storage of multiparticle entangled states of atoms in collective thermostat

A. M. Basharov, V. N. Gorbachev, A. A. Rodichkina
2006 Physical Review A. Atomic, Molecular, and Optical Physics  
We derive a master equation describing the collective decay of two-level atoms inside a single mode cavity in the dispersive limit. By considering atomic decay in the collective thermostat, we found a decoherence-free subspace of the multiparticle entangled states of the W-like class. We present a scheme for writing and storing these states in collective thermostat.
doi:10.1103/physreva.74.042313 fatcat:vky5v5qru5chvj7ig3eesdut5i