Non-ideal teleportation of tripartite entanglement: Einstein-Podolsky-Rosen versus Greenberger-Horne-Zeilinger schemes

Abstract

Channels composed by Einstein-Podolsky-Rosen (EPR) pairs are capable of teleporting arbitrary multipartite states. The question arises whether EPR channels are also optimal against imperfections. In particular, the teleportation of Greenberger-Horne-Zeilinger states (GHZ) requires three EPR states as the channel and full measurements in the Bell basis. We show that, by using two GHZ states as the channel, it is possible to transport any unknown three-qubit state of the form $c_0|000⟩+c_1|111⟩$. The teleportation is made through measurements in the GHZ basis, and, to obtain deterministic results, in most of the investigated scenarios, four out of the eight elements of the basis need to be unambiguously distinguished. Most importantly, we show that when both, systematic errors and noise are considered, the fidelity of the teleportation protocol is higher when a GHZ channel is used in comparison to that of a channel composed by EPR pairs.

10 pages, 4 figures, 3 tables

References in corpus (4)

• Experimental quantum teleportation
• Advances in Quantum Teleportation
• Experimental Quantum Teleportation of a Two-Qubit Composite System
• Fighting noise with noise in realistic quantum teleportation

Cited by in corpus (6)

• High-dimensional quantum teleportation under noisy environments
• Tripartite entanglement: Foundations and applications
• Quantum Correlation Sharing: A Review On Recent Progress From Nonlocality To Other Non-Classical Correlations
• Using three-partite GHZ states for partial quantum error-detection in entanglement-based protocols
• Rating the performance of noisy teleportation using fluctuations in fidelity
• Recycling the resource: Sequential usage of shared state in quantum teleportation with weak measurements