摘要
We propose a simple scheme to generate x-type four-charge entangled states by using SQUID-based charge qubits capacitively coupled to a transmission line resonator （TLR）. The coupling between the superconducting qubit and the TLR can be effectively controlled by properly adjusting the control parameters of the charge qubit. The experimental feasibility of our scheme is also shown.
We propose a simple scheme to generate x-type four-charge entangled states by using SQUID-based charge qubits capacitively coupled to a transmission line resonator （TLR）. The coupling between the superconducting qubit and the TLR can be effectively controlled by properly adjusting the control parameters of the charge qubit. The experimental feasibility of our scheme is also shown.
基金
supported by the National Natural Science Foundations of China (Grant Nos. 10947017/A05 and 11074190)
the Science Foundation of the Key Laboratory of Novel Thin Film Solar Cells, China (Grant No. KF200912)
the Graduates' Innovative Scientific Research Project of Zhejiang Province, China (Grant No. 2011831)
