26 citations · 201 across the 29 of their papers we have counts for
7 papers · 1 filter
Readout of superconducting flux qubit state with a Cooper pair box
Mun Dae Kim, K. Moon
We study a readout scheme of superconducting flux qubit state with a Cooper pair box as a transmon. The qubit states consist of the superpositions of two degenerate states where th…
Implementation of three-qubit Toffoli gate in a single step
Ai Min Chen, Sam Young Cho, Mun Dae Kim
Single-step implementations of multi-qubit gates are generally believed to provide a simpler design, a faster operation, and a lower decoherence. For coupled three qubits interacti…
Realizable spin models and entanglement dynamics in superconducting flux qubit systems
Qian Qian Shi, Sam Young Cho, Bo Li +1
Realizable spin models are investigated in a two superconducting flux qubit system. It is shown that a specific adjustment of system parameters in the two flux qubit system makes i…
Entanglement and Bell States in Superconducting Flux Qubits
Mun Dae Kim, Sam Young Cho
We theoretically study macroscopic quantum entanglement in two superconducting flux qubits. To manipulate the state of two flux qubits, a Josephson junction is introduced in the co…
Controllable Coupling in Phase-Coupled Flux Qubits
Mun Dae Kim
We propose a scheme for tunable coupling of phase-coupled flux qubits. The phase-coupling scheme can provide a strong coupling strength of the order of Josephson coupling energy of…
Diamagnetic response of Aharonov-Bohm rings: Impurity backward scatterings
Mun Dae Kim, Chul Koo Kim, Kyun Nahm
We report a theoretical calculation on the persistent currents of disordered normal-metal rings. It is shown that the diamagnetic responses of the rings in the vicinity of the zero…
Coupling of Josephson current qubits using a connecting loop
Mun Dae Kim, Jongbae Hong
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 tu…