Teleportation of entangled states without Bell-state measurement

Abstract

In a recent paper [Phys. Rev. A 70, 025803 (2004)] we presented a scheme to teleport an entanglement of zero- and one-photon states from a bimodal cavity to another one, with 100% success probability. Here, inspired on recent results in the literature, we have modified our previous proposal to teleport the same entangled state without using Bell-state measurements. For comparison, the time spent, the fidelity, and the success probability for this teleportation are considered.Comment: 4 pages, 1 figure, published in Phys. Rev. A 72, 045802 (2005

Teleportation of GHZ-States in QED-Cavities without the Explicit Bell-State Measurement

“…In this paper we present a generalized scheme to teleport N entangled zero-and one-photon states in cavities-QED without the explicit use of the Bell-state measurement. The present work is an extension of the paper of Zheng [25] and of Cardoso et al [8], now for a state-GHZ of N (N > 3) qubits.…”

“…Pires et al have also presented a proposal to teleport entanglements of zero-and one-photon states in a cavity-QED [22], using Bell-state measurement. In recent works, Zheng [25] and Cardoso et al [8], have shown a teleportation of an unknown quantum state without using the Bell-state measurement. Recently, some schemes have been proposed for information concentration without Bell-state measurement [26,27], useful for quantum communication.…”

A probabilistic quantum communication protocol using mixed entangled channel

“…Origi nally the quantum teleportation was presented by Bennett et al [1] for arbitrary single qubit quantum states by using a maximally entangled Bell state. After that several theoretical and experimental aspects of different teleportation protocols with various types of quantum resources appeared in the literature, some of which are noted in [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. We describe some of the works below.…”

Scheme for the teleportation of bipartite entangled state of the two cavity modes

“…These are comparatively better techniques for quantum information processing due to the fact that it is suitable to use atoms for storing information and photons for transporting information. There are some other schemes [9,10] in which quantum states are teleported in an approximate way by avoiding Bell state measurement.…”