42 citations · 104 across the 5 of their papers we have counts for
5 papers · 1 filter
Macroscopic Quantum Entanglement of a Kondo Cloud at Finite Temperature
S. -S. B. Lee, Jinhong Park, H. -S. Sim
We propose a variational approach for computing the macroscopic entanglement in a many-body mixed state, based on entanglement witness operators, and compute the entanglement of fo…
Minimax optimization of entanglement witness operator for the quantification of three-qubit mixed-state entanglement
Sungguen Ryu, Seung-Sup B. Lee, H. -S. Sim
We develop a numerical approach for quantifying entanglement in mixed quantum states by convex-roof entanglement measures, based on the optimal entanglement witness operator and th…
Quantifying mixed-state quantum entanglement by optimal entanglement witness
S. -S. B. Lee, H. -S. Sim
We develop an approach of quantifying entanglement in mixed quantum states by the optimal entanglement witness operator. We identify the convex set of mixed states for which a sing…
Interferometric distillation and determination of unknown two-qubit entanglement
S. -S. B. Lee, H. -S. Sim
We propose a scheme for both distilling and quantifying entanglement, applicable to individual copies of an arbitrary unknown two-qubit state. It is realized in a usual two-qubit i…
Construction of optimal witness for unknown two-qubit entanglement
H. S. Park, S. -S. B. Lee, H. Kim +2
Whether entanglement in a state can be detected, distilled, and quantified without full state reconstruction is a fundamental open problem. We demonstrate a new scheme encompassing…