Coupling of Josephson current qubits using a connecting loop
Mun Dae Kim, Jongbae Hong
DOI 10.1103/PhysRevB.70.184525 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
We propose a coupling scheme for the three-Josephson junction qubits which uses a connecting loop, but not mutual inductance. Present scheme offers the advantages of a large and tunable level splitting in implementing the controlled-NOT (CNOT) operation. We calculate the switching probabilities of the coupled qubits in the CNOT operations and demonstrate that present CNOT gate can meet the criteria for the fault-tolerant quantum computing. We obtain the coupling strength as a function of the coupling energy of the Josephson junction and the length of the connecting loop which varies with selecting two qubits from the scalable design.
Similar papers
Coupling of Josephson current qubits using a connecting loop
similarity 0.93Mun Dae Kim & Jongbae Hong · 2003 · arXiv:cond-mat/0305127
Source status unknown — claims are unverified
Josephson junction qubit network with current-controlled interaction
similarity 0.91J. Lantz et al.
Source status unknown — claims are unverified
Tunable Coupling of Superconducting Qubits
similarity 0.90Alexandre Blais et al.
Source status unknown — claims are unverified
Controlled-NOT logic with nonresonant Josephson phase qubits
similarity 0.89Andrei Galiautdinov
Source status unknown — claims are unverified
Josephson junction qubit network with current-controlled interaction
similarity 0.89J. Lantz et al. · 2004 · arXiv:cond-mat/0403285
Source status unknown — claims are unverified
Scalable Quantum Computing with Josephson Charge Qubits
similarity 0.89J. Q. You et al.
Source status unknown — claims are unverified