32 citations · 39 across the 6 of their papers we have counts for
8 papers · 1 filter
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…
Dissipation of quantum information near the event horizon of Schwarzschild black holes
D. Ahn, S. W. Hwang
We found that the Wigner rotation of a particle with spin 1/2, which is unitary in Minkowski spacetime, becomes non-unitary as the particle is falling onto the black hole. This imp…
Completely-Positive Non-Markovian Decoherence
Jinhyoung Lee, Inbo Kim, Helen McAneney +2
We propose an effective Hamiltonian approach to investigate decoherence of a quantum system in a non-Markovian reservoir, naturally imposing the complete positivity on the reduced…
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.…
Is quantum entanglement invariant in special relativity?
D. Ahn, H. J. Lee, S. W. Hwang +1
Quantum entanglements are of fundamental importance in quantum physics ranging from the quantum information processing to the physics of black hole. Here, we show that the quantum…
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…