206 citations · 734 across the 28 of their papers we have counts for
28 papers
Test of Common Sense in Quantum Copying Process
Mi-Ra Hwang, Eylee Jung, Kap Soo Jang +5
It is believed that the more we have {\it a priori} information on input states, the better we can make the quality of clones in quantum cloning machines. This common sense idea wa…
Difficulties in analytic computation for relative entropy of entanglement
Hungsoo Kim, Mi-Ra Hwang, Eylee Jung +1
It is known that relative entropy of entanglement for entangled state is defined via its closest separable (or positive partial transpose) state . Recently, it has been show…
Effect of Phase Factor in the Geometric Entanglement Measure of Three-Qubit States
Sayatnova Tamaryan, Hungsoo Kim, Mu-Seong Kim +2
Any pure three-qubit state is uniquely characterized by one phase and four positive parameters. The geometric measure of entanglement as a function of state parameters can have dif…
Attack of Many Eavesdroppers via Optimal Strategy in Quantum Cryptography
Eylee Jung, Mi-Ra Hwang, DaeKil Park +3
We examine a situation that eavesdroppers attack the Bennett-Brassard cryptographic protocol via their own optimal and symmetric strategies. Information gain and mutual informa…
Quantum Resonance near Optimal Eavesdropping in Quantum Cryptography
Eylee Jung, Mi-Ra Hwang, DaeKil Park +6
We find a resonance behavior in the disturbance when an eavesdropper chooses a near-optimal strategy intentionally or unintentionally when the usual Bennett-Brassard cryptographic…
Toward an understanding of entanglement for generalized n-qubit W-states
Levon Tamaryan, Hungsoo Kim, Eylee Jung +3
We solve stationarity equations of the geometric measure of entanglement for multi-qubit W-type states. In this way we compute analytically the maximal overlap of one-parameter …