DETERMINISTIC QUANTUM DENSE CODING WITH A GENUINE MULTIPARTITE ENTANGLEMENT IN LINEAR OPTICAL SYSTEM

摘要

We propose two schemes for realizing dense coding in linear optical system. These schemes are based on a genuine four-qubit entangled state |Ψ〉 as a shared resource of entanglement. There are many interesting properties and possible applications in quantum information processing and fundamental tests of quantum physics by this state. By distinguishing Alice's operation we can easily achieve the dense-coding.