Demonstration of Controlled Quantum Teleportation for Discrete Variables on Linear Optical Devices

Artur Barasiński, Antonín Černoch, and Karel Lemr
Phys. Rev. Lett. 122, 170501 – Published 29 April 2019
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Abstract

We report an experimental implementation of tripartite controlled quantum teleportation on quantum optical devices. The protocol is performed through bi- and tripartite entangled channels of discrete variables and qubits encoded in the polarization of individual photons. The experimental results demonstrate successful controlled quantum teleportation with a fidelity around 83%, well above the classical limit. By realizing the controlled quantum teleportation through a biseparable state, we show that tripartite entanglement is not a necessary resource for controlled quantum teleportation, and the controller’s capability to allow or prohibit the teleportation cannot be considered to be a manifestation of tripartite entanglement. These results open new possibilities for further application of controlled quantum teleportation by lowering the teleportation channel’s requirements.

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  • Received 1 October 2018

DOI:https://doi.org/10.1103/PhysRevLett.122.170501

© 2019 American Physical Society

Physics Subject Headings (PhySH)

Quantum Information, Science & TechnologyAtomic, Molecular & Optical

Authors & Affiliations

Artur Barasiński1,2,*, Antonín Černoch3,†, and Karel Lemr1,‡

  • 1RCPTM, Joint Laboratory of Optics of Palacký University and Institute of Physics of CAS, Faculty of Science, Palacký University, 17. listopadu 12, 771 46 Olomouc, Czech Republic
  • 2Institute of Physics, University of Zielona Góra, Z. Szafrana 4a, 65-516 Zielona Góra, Poland
  • 3Institute of Physics of the Czech Academy of Sciences, Joint Laboratory of Optics of Palacký University and Institute of Physics of CAS, 17. listopadu 50A, 772 07 Olomouc, Czech Republic

  • *artur.barasinski@upol.cz
  • acernoch@fzu.cz
  • k.lemr@upol.cz

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Issue

Vol. 122, Iss. 17 — 3 May 2019

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