Abstract In a recent paper, DONG et al. proposed a scheme for probabilistic controlled teleportation of a triplet W state using combined non-maximally entangled channel of two Einstein-Podolsky-Rosen (EPR) states and one Greenberger-Horne-Zeilinger (GHZ) state. In this paper, only using one Einstein-PodolskyRosen (EPR) state and one Greenberger-Horne-Zeilinger (GHZ) state, the scheme for probab...

Braunstein and Kimble observe correctly that, in the Innsbruck experiment, one does not always observe a teleported photon conditioned on a coincidence recording at the Bell-state analyser. In their opinion, this affects the fidelity of the experiment, but we believe, in contrast, that it has no significance, and that when a teleported photon appears, it has all the properties required by the t...

We address fundamental limitations of quantum teleportation -- the process transferring information using classical communication and preshared entanglement. develop a new protocol based upon idea ancillary entanglement catalytically, i.e. without depleting it. This is then used to show that catalytic allows for noiseless channel be simulated with quality could never achieved only from shared s...