Quantum Teleportation of Superposition State for Squeezed States

摘要

This paper proposes a scheme for teleporting an arbitrary coherentsuperposition state of two equal-amplitude and opposite-phase squeezed vacuumstates (SVS) via a symmetric 50/50 beam splitter and photodetectors. It isshown that the quantum teleportation scheme has the successful probability 1/4.Maximally entangled SVS's are used as quantum channel for realizing theteleportation scheme. It is shown that if an initial quantum channel is in apure but not maximally entangled SVS, the quantum channel may be distilled to amaximally entangled SVS through entanglement concentration.