J4 ›› 2009, Vol. 26 ›› Issue (5): 570-576.

• Quantum Optics • Previous Articles     Next Articles

A scheme for generating cluster state with Josephson charge qubit

TAO Rui, ZHENG Xiao-Hu, CAO Zhuo-Liang   

  1. 1 Key Laboratory of Opto-electronic Information Acquisition and Manipulation, Ministry of Education, School of Physics and Material Science, Anhui University, Hefei 230039, China; 
    2 Department of Physics, Hefei Teachers College, Hefei 230061, China
  • Published:2009-09-28 Online:2009-08-27

Abstract:

Highly entangled states called cluster states are an universal resource for measurement based quantum computing (QC). Based on the Josephson charge qubits, a scheme for generating cluster states is proposed.The scheme is simple and easily manipulated, because any two charge qubits based on Josephson junction can be selectively and effectively coupled by a symmetric dc SQUID. Initially state can be generated via changing the gate voltages, and couple charge qubits by choosing the suitable parameters. All the devices in the scheme are within the current technology.

Key words: quantum optics, cluster state, superconducting qubit, Josephson junction