Hyperentanglement is a promising resource in quantum information processing with its high
capacity character, defined as the entanglement in multiple degrees of freedom (DOFs) of a …

We present a way for entanglement purification based on two parametric down-conversion
(PDC) sources with cross-Kerr nonlinearities. It is comprised of two processes. The first one …

We present two realistic entanglement concentration protocols (ECPs) for pure partially
entangled photons. A partially entangled photon pair can be concentrated to a maximally …

A multiparty quantum secret sharing (QSS) protocol of classical messages (ie, classical bits)
is proposed by using swapping quantum entanglement of Bell states. The secret messages …

Entanglement concentration is of most importance in long distance quantum communication
and quantum computation. It is to distill maximally entangled states from pure partially …

We present an entanglement purification protocol and an entanglement concentration
protocol for electron-spin entangled states, resorting to quantum-dot spin and optical …

We present an efficient quantum repeater protocol that uses coupled systems of quantum-
dot spins and optical microcavities, in which the spatial entanglement of a photon system …

We present two two-step practical entanglement concentration protocols for concentrating
an arbitrary three-particle less-entangled W state into a maximally entangled W state …

We present a nonlocal entanglement concentration scheme for reconstructing some
maximally entangled multipartite states from partially entangled ones by exploiting cross …

Hyperentanglement, defined as the entanglement in several degrees of freedom (DOFs) of a
quantum system, has attracted much attention recently. Here we investigate the possibility of …