13 citations · 66 across the 8 of their papers we have counts for
8 papers
Forgeable quantum messages in arbitrated quantum signature schemes
Taewan Kim, Hyang-Sook Lee, Soojoon Lee
Recently, the concept on `forgeable quantum messages' in arbitrated quantum signature schemes was introduced by T. Kim et al. [Phys. Scr., 90, 025101 (2015)], and it has been shown…
Quantum messages with signatures forgeable in arbitrated quantum signature schemes
Taewan Kim, Jeong Woon Choi, Nam-Su Jho +1
Even though a method to perfectly sign quantum messages has not been known, the arbitrated quantum signature scheme has been considered as one of good candidates. However, its forg…
Concurrence of assistance and Mermin inequality on three-qubit pure states
Dong Pyo Chi, Kabgyun Jeong, Taewan Kim +2
We study a relation between the concurrence of assistance and the Mermin inequality on three-qubit pure states. We find that if a given three-qubit pure state has the minimal concu…
Multipartite bound entanglement and multi-setting Bell inequalities
Dong Pyo Chi, Kabgyun Jeong, Taewan Kim +2
Dür [Phys. Rev. Lett. {\bf 87}, 230402 (2001)] constructed -qubit bound entangled states which violate a Bell inequality for , and his result was recently improved by sh…
Quantum states for perfectly secure secret sharing
Dong Pyo Chi, Jeong Woon Choi, Jeong San Kim +2
In this work, we investigate what kinds of quantum states are feasible to perform perfectly secure secret sharing, and present its necessary and sufficient conditions. We also show…
Monogamy equality in quantum systems
Dong Pyo Chi, Jeong Woon Choi, Kabgyun Jeong +3
There is an interesting property about multipartite entanglement, called the monogamy of entanglement. The property can be shown by the monogamy inequality, called the Coffman-Kund…