48 citations · 145 across the 10 of their papers we have counts for
4 papers · 2 filters
Entanglement criteria via the uncertainty relations in su(2) and su(1,1) algebra: detection of non-Gaussian entangled states
Hyunchul Nha, Jaewan Kim
We derive a class of inequalities, from the uncertainty relations of the SU(1,1) and the SU(2) algebra in conjunction with partial transposition, that must be satisfied by any sepa…
Quantum key distribution using superposition of the vacuum and single photon states
Jae-Weon Lee, Jaewan Kim, Yong Wook Cheong +2
B92-type and BB84-type quantum cryptography schemes using superposed states of the vacuum and single particle states which are robust against PNS attacks are studied. The number of…
Quantum Separability of Thermal Spin One Boson Systems
Jae-Weon Lee, Sangchul Oh, Jaewan Kim
Using the temperature Green's function approach we investigate entanglement between two non-interacting spin 1 bosons in thermal equilibrium. We show that, contrary to the fermion…
Entanglement of three-qubit pure states in terms of teleportation capability
Soojoon Lee, Jaewoo Joo, Jaewan Kim
We define an entanglement measure, called the partial tangle, which represents the residual two-qubit entanglement of a three-qubit pure state. By its explicit calculations for thr…