Pure Gaussian quantum states from passive Hamiltonians and an active   local dissipative process
  We investigate the problem of preparing a pure Gaussian state via reservoir engineering. In particular, we consider a linear quantum system with a passive Hamiltonian and with a single reservoir which acts only on a single site of the system. We then give a full parametrization of the pure Gaussian states that can be prepared by this type of quantum system. 
Shan Ma, Matthew J. Woolley, Ian R. Petersen, and Naoki Yamamoto
quant-ph cs.SY math-ph math.MP math.OC