2 papers
quant-ph2002
Quantum Secure Communication with W States
Jaewoo Joo, Jinhyoung Lee, Jingak Jang +1
A W state is pair-wisely entangled, belonging to the different class from Greenberger, Horne, and Zeilinger (GHZ) state. We show that the W state enables three variant protocols, t…
quant-ph2001
Probabilistic nonlocal gate operation via imperfect entanglement
Jingak Jang, Jinhyoung Lee, M. S. Kim +1
Nonlocal gate operation is based on sharing an ancillary pair of qubits in perfect entanglement. When the ancillary pair are partially entangled, the efficiency of the gate operati…