115 citations · 204 across the 17 of their papers we have counts for
17 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 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.…
Entangled multiplet by angular momentum addition
Hyuk-jae Lee, Sung Dahm Oh, Doyeol Ahn
We present the visible entangled states of 4-qubit system which can be observed easily in physical laboratories. This was motivated from the fact that the entangled state of 2-qubi…
Relativistic entanglement and Bell's inequality
Doyeol Ahn, Hyuk-jae Lee, Young Hoon Moon +1
In this paper, the Lorentz transformation of entangled Bell states seen by a moving observer is studied. The calculated Bell observable for 4 joint measurements turns out to give a…
Relativistic entanglement of quantum states and nonlocality of Einstein-Podolsky-Rosen(EPR) paradox
Doyeol Ahn, Hyuk-jae Lee, Sung Woo Hwang
Relativistic bipartite entangled quantum states is studied to show that Nature doesn't favor nonlocality for massive particles in the ultra-relativistic limit. We found that to an…
Lorentz covariant reduced-density-operator theory for relativistic quantum information processing
Doyeol Ahn, Hyuk-jae Lee, Sung Woo Hwang
In this paper, we derived Lorentz covariant quantum Liouville equation for the density operator which describes the relativistic quantum information processing from Tomonaga-Schwin…