Quantum cobweb: remote shared-entangling of an unknown quantum state
Arun Kumar Pati · arXiv (Cornell University) · 2001
Using a special class of multipartite entangled states (called {\\it zero sum amplitude entangled states}), we show that one can remotely create a shared entangled state of an unknown quantum state with a reference state. The resulting universal entangled state from which an unknown state cannot be salvaged by local and non-local unitary operations by the concerned parties is called a quantum cobweb. We quantify the amount of resource required to create such a shared-entangled states. This may provide a way to preserve secret information by diluting an unknown state to many parties where non of them being able to retrieve it.