A1 Refereed original research article in a scientific journal

Experimental realization of high-fidelity teleportation via a non-Markovian open quantum system




AuthorsZ.-D. Liu, Y.-N. Sun, B.-H. Liu, C.-F. Li, G.-C. Guo, S. Hamedani Raja, H. Lyyra, J. Piilo

PublisherAmerican Physical Society

Publication year2020

JournalPhysical Review A

Article number062208

Volume102

Issue6

Number of pages6

ISSN2469-9926

eISSN1094-1622

DOIhttps://doi.org/10.1103/PhysRevA.102.062208

Self-archived copy’s web addresshttps://arxiv.org/abs/2007.01318


Abstract

Open quantum systems and study of decoherence are important for our fundamental understanding of quantum physical phenomena. For practical purposes, a large number of quantum protocols exist that exploit quantum resources, e.g., entanglement, which allows us to go beyond what is possible to achieve by classical means. We combine concepts from open quantum systems and quantum information science and give a proof-of-principle experimental demonstration—with teleportation—that it is possible to implement efficiently a quantum protocol via a non-Markovian open system. The results show that, at the time of implementation of the protocol, it is not necessary to have the quantum resource in the degree of freedom used for the basic protocol—as long as there exists some other degree of freedom or the environment of an open system, which contains useful resources. The experiment is based on a pair of photons, where their polarizations act as open system qubits and frequencies as their environments, while the path degree of freedom of one of the photons represents the state of Alice's qubit to be teleported to Bob's polarization qubit.


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