(1) Advanced Research Laboratory, Hitachi, Ltd., 2520 Akanuma, Hatoyama, Saitama 350-0395, Japan;(2) CREST, Japan Science and Technology Agency, 1-1-9 Yaesu, Chuo-ku, Tokyo 103-0028, Japan
Abstract:
The quantum retrodiction for open systems which obey the quantum Markovian dynamics is investigated by means of non-equilibrium
thermo Field dynamics (NETFD) which can easily derive the retrodictive time-evolution generators. NETFD can formulate the
quantum retrodiction for open systems in the same way as that for closed systems.