Macroscopic superpositions via nested interferometry: finite temperature   and decoherence considerations
  Recently there has been much interest in optomechanical devices for the production of macroscopic quantum states. Here we focus on a proposed scheme for achieving macroscopic superpositions via nested interferometry. We consider the effects of finite temperature on the superposition produced. We also investigate in detail the scheme's feasibility for probing various novel decoherence mechanisms. 
Brian Pepper, Evan Jeffrey, Roohollah Ghobadi, Christoph Simon, Dirk   Bouwmeester
quant-ph