Generation of entangled coherent states of two cavity fields via coupling to a SQUID-based charge qubit
Jie‐Qiao Liao, Le‐Man Kuang · Journal of Physics B Atomic Molecular and Optical Physics · 2007
We propose a scheme to generate entangled coherent states (ECSs) of two microwave cavity fields coupling to a SQUID-based Cooper pair box (CPB) charge qubit by extending the single-cavity model of coupling between a single microcavity and a CPB charge qubit proposed by Liu et al (2005 Phys. Rev. A 71 063820). We show that by measuring the states of the CPB charge qubit, ECSs of the two cavity fields can be generated with a controllable interaction between the cavities and the CPB charge qubit.