187 citations · 365 across the 7 of their papers we have counts for
7 papers
The entanglement criterion of multiqubits
Hyuk-jae Lee, Sung Dahm Oh, Doyeol Ahn
We present an entanglement criterion for multiqubits by using the quantum correlation tensors which rely on the expectation values of the Pauli operators for a multiqubit state. Ou…
Entanglement swapping secures multiparty quantum communication
Juhui Lee, Soojoon Lee, Jaewan Kim +1
Extending the eavesdropping strategy devised by Zhang, Li and Guo [Phys. Rev. A 63, 036301 (2001)], we show that the multiparty quantum communication protocol based on entanglement…
Convex-roof extended negativity as an entanglement measure for bipartite quantum systems
Soojoon Lee, Dong Pyo Chi, Sung Dahm Oh +1
We extend the concept of the negativity, a good measure of entanglement for bipartite pure states, to mixed states by means of the convex-roof extension. We show that the measure d…
Entanglement measure for any quantum states
Hyuk-jae Lee, Sung Dahm Oh, Doyeol Ahn
The entanglement measure for multiqudits is proposed. This measure calculates the partial entanglement distributed by subsystems and the complete entanglement of the total system.…
Multipartite entanglement for entanglement teleportation
Jinhyoung Lee, Hyegeun Min, Sung Dahm Oh
The scheme for entanglement teleportation is proposed to incorporate multipartite entanglement of four qubits as a quantum channel. Based on the invariance of entanglement teleport…
Bose-Einstein condensation in a two-dimensional trap
Sang-Hoon Kim, Changyeon Won, Sung Dahm Oh +1
The theory of Bose-Einstein condensation in a two-dimensional(2D) harmonic trap is developed from 2D Gross-Pitaevskii equation. The 2D interaction strength is obtained from a 2D co…