Variable-frequency-controlled coupling in charge qubit circuits: Effects of microwave field on qubit-state readout
Xiao-Ling He, Yu-xi Liu, J. Q. You, Franco Nori · Physical Review A · 2007
To implement quantum-information processing, microwave fields are often used to manipulate superconducting qubits. We study how the coupling between superconducting charge qubits can be controlled by variable-frequency magnetic fields. We also study the effects of the microwave fields on the readout of the charge-qubit states. The measurement of the charge-qubit states can be used to demonstrate the statistical properties of photons.