Ping Zhang, Bo You, Li-Xiang Cen
We investigate the long-lived quantum coherence in the non-Markovian process of spontaneous decay of a two-qubit system subject to a local environment. The asymptotic population of the qubit is linked to the spectral density of the reservoir through a general functional relation between them. The dissipationless behavior of asymptotic processes, including the steady coherent dynamics with self-sustained oscillations and ultimate persistence of quantum correlations, are elaborated with respect to spectral parameters of the specified reservoirs, e.g., the Ohmic class and the photonic crystal. We expect these results to contribute towards reservoir engineering with the aim of enhancing stationary quantum coherence in noisy environments.
View original:
http://arxiv.org/abs/1302.6366
No comments:
Post a Comment