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arXiv:quant-ph/9808040 · Physical Review A

Methods for reliable teleportation

Lev Vaidman A, Nadav Yoran

Published Jan 1, 1999• 254 citations
arXivHTMLPDF

Abstract

Recent experimental results and proposals towards implementation of quantum teleportation are discussed. It is proved that reliable (theoretically, 100% probability of success) teleportation cannot be achieved using the methods applied in recent experiments, i.e., without quantum systems interacting with one another. Teleportation proposals involving atoms and electromagnetic cavities are reviewed and the most feasible methods are described. In particular, the language of nonlocal measurements has been applied; this language has also been used for presenting a method for teleportation of quantum states of systems with continuous variables.

DOI
10.1103/physreva.59.116

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Abstract The amazing properties of quantum systems, such as nonlocality, entanglement, superpositions and interference, have revolutionized our thinking about information processing and computing. Quantum teleportation is probably the most notable and dramatic among various concepts developed through the application of quantum mechanics to the information science. In this chapter we review the basic ideas behind quantum teleportation and discuss some interesting proposals for teleportation of various quantum systems. We also discuss the implementation of quantum teleportation based on the well-developed tools of cavity quantum electrodynamics.
With the advent of quantum technology, the exploration of quantum teleportation has become increasingly important, and it has provided a glimpse of the potential of quantum information science. The current research delves into the background of quantum teleportation, emphasizing its key role in advancing quantum communication and computation. Implications of this research are that it has the potential to revolutionize data transmission and processing, providing a secure and efficient means of exchanging quantum information. This paper is structured to provide a comprehensive study of quantum teleportation, starting with a literature review that lays the foundation for our work. Afterward, the details of our research are presented, including the theoretical framework and the proposed methodology for realizing the quantum teleportation protocol. We provide a careful overview of the technical details, demonstrating the complexity of quantum state preparation, entanglement distribution, and Bell state measurements. Our empirical section demonstrates the practical application of these protocols, providing empirical evidence of successful teleportation of quantum states. The theoretical predictions are confirmed by the experimental results, which validate the feasibility and reliability of our approach. Conclusions drawn from the experiments emphasize the robustness of quantum teleportation as a viable technology for future quantum networks.
With the advent of quantum technology, the exploration of quantum teleportation has become increasingly important, and it has provided a glimpse of the potential of quantum information science. The current research delves into the background of quantum teleportation, emphasizing its key role in advancing quantum communication and computation. Implications of this research are that it has the potential to revolutionize data transmission and processing, providing a secure and efficient means of exchanging quantum information. This paper is structured to provide a comprehensive study of quantum teleportation, starting with a literature review that lays the foundation for our work. Afterward, the details of our research are presented, including the theoretical framework and the proposed methodology for realizing the quantum teleportation protocol. We provide a careful overview of the technical details, demonstrating the complexity of quantum state preparation, entanglement distribution, and Bell state measurements. Our empirical section demonstrates the practical application of these protocols, providing empirical evidence of successful teleportation of quantum states. The theoretical predictions are confirmed by the experimental results, which validate the feasibility and reliability of our approach. Conclusions drawn from the experiments emphasize the robustness of quantum teleportation as a viable technology for future quantum networks.
Quantum teleportation is one of the most enigmatic protocols realized so far in the area of quantum information, allowing for the transfer of quantum information assisted by an entangled state. It was a subject of science fiction 20 years ago, but now is a fundamental experimental protocol and quantum primitive for quantum information processing tasks. There have been many successful realizations of teleportation ranging from those using photons, atoms, and hybrid systems and long-range teleportation beyond 100km has already been achieved multiple times. These however typically involve explicitly single particle systems or effective few-particle systems. For larger (visible to the naked eye) objects involving many particles, teleportation is typically more difficult due to the fast decoherence such macroscopic objects suffer. In this case, the entanglement disappears almost as soon as it is created, making it useless for such tasks. More recently, teleportation was accomplished in the continuous variables (CV) framework between two atomic ensembles [1]. As remarkable as these achievements are, teleportation schemes that are known today (qubit/CV) do not allow us to teleport more complex quantum states at the macroscopic level. For example, while it is possible in principle to extend teleportation to multiple qubits, on a macroscopic level this is prohibitively complicated and highly susceptible to decoherence. For atomic ensemble CV based schemes, the teleported states are restricted to small displacements from the completely Sx-polarized state on the Bloch sphere.