Multi-qubit teleportation and multi-bit superdense coding via cascade splitting

Abstract

In this study, we present a simplified version of the quantum teleportation protocol for nqubits and a generalized version of the superdense coding protocol for n-bits; in both cases, thanks to the cascade splitting technique. Both protocols will be analyzed on three notably different platforms: Quirk simulator, IBM QASM simulator of the IBM Q Experience program, and an optical table. The experiments on the three platforms show the excellent performance of both protocols. Finally, an analysis, about the immunity of these protocols in the presence of an eavesdropper is incorporated.

Simplified entanglement swapping protocol for the quantum Internet

“…Of all the quantum communications protocols developed to date, quantum teleportation and super-dense coding 17 are the first and most important. Countless efforts have been made during the last two decades to extend the applicability of these protocols to: transmit multiple qubits at the same time 18 , 19 , transmit the qubits in both directions 20 – 26 , and simplify its physical implementation 27 – 31 . …”