ar X iv : q ua nt - p h / 04 05 11 6 v 2 1 0 A ug 2 00 4 Complementarity of Entanglement and Interference

ar X iv : q ua nt - p h / 04 05 11 6 v 1 2 0 M ay 2 00 4 Complementarity of Entanglement and Interference

A complementarity relation is shown between the visibility of interference and bipartite entanglement in a two qubit interferometric system when the parameters of the quantum operation change for a given input state. The entanglement measure is a decreasing function of the visibility of interference. The implications for quantum computation are briefly discussed.

ar X iv : q ua nt - p h / 04 05 11 6 v 3 23 A ug 2 00 5 Complementarity of Entanglement and Interference

A complementarity relation is shown between the visibility of interference and bipartite entanglement in a two qubit interferometric system when the parameters of the quantum operation change for a given input state. The entanglement measure is a decreasing function of the visibility of interference. The implications for quantum computation are briefly discussed.

ar X iv : q ua nt - p h / 05 04 11 2 v 3 21 A pr 2 00 6 Entanglement distribution by an arbitrarily inept delivery service

We consider the scenario where a company C manufactures in bulk pure entangled pairs of particles, each pair intended for a distinct pair of distant customers. Unfortunately, its delivery service is inept – the probability that any given customer pair receives its intended particles is S ∈ (0, 1), and the customers cannot detect whether an error has occurred. Remarkably, no matter how small S i...

ar X iv : q ua nt - p h / 05 08 06 7 v 1 8 A ug 2 00 5 NEW SCHEME OF QUANTUM TELEPORTATION

A new scheme for quantum teleportation is presented, in which the complete teleportation can be occurred even when an entangled state between Alice and Bob is not maximal.

ar X iv : q ua nt - p h / 04 11 17 2 v 1 2 3 N ov 2 00 4 Information and Entropy in Quantum Theory