Controllable manipulation and entanglement of macroscopic quantum states in coupled charge qubits

J. Q. You, J. S. Tsai, Franco Nori
2003 Physical Review B (Condensed Matter)  
We present an experimentally implementable method to couple Josephson charge qubits and to generate and detect macroscopic entangled states. A large-junction superconducting quantum interference device is used in the qubit circuit for both coupling qubits and implementing the readout. Also, we explicitly show how to achieve a microwave-assisted macroscopic entanglement in the coupled-qubit system.
doi:10.1103/physrevb.68.024510 fatcat:3tyk5v3vlnaxfg22szb6fiytey