Simply quantum information processing with rf superconducting qubit
F.-Y. Zhang, Z.-H. Chen, C. Li, H.-S. Song
School of Physics and Optoelectronic Technology, Dalian University of Technology, 116024 Dalian, China
Abstract
Utilizing rf superconducting quantum interference devices (SQUIDs)
coupled with transmission line resonator (TLR), we propose a scheme to
implementing quantum information processing. In this system, the high
fidelity two-qubit maximally entangled states and quantum logic gate are
realized. Under the large detuning condition, the excited state of rf SQUID
is adiabatically eliminated. So the excited state spontaneous emission of the
superconducting qubit can be effectively avoided in this paper. At
last, the experimental feasibility and the challenge of our schemes
have been discussed.