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Entropy 2019, 21(2), 150; https://doi.org/10.3390/e21020150

Efficient Quantum Teleportation of Unknown Qubit Based on DV-CV Interaction Mechanism

Department of computer modeling and nanotechnology, Institute of natural and exact sciences, South Ural State University, Lenin Av. 76, 454080 Chelyabinsk, Russia
Received: 13 December 2018 / Revised: 30 January 2019 / Accepted: 1 February 2019 / Published: 5 February 2019
(This article belongs to the Special Issue Quantum Nonlocality)
PDF [1107 KB, uploaded 5 February 2019]

Abstract

We propose and develop the theory of quantum teleportation of an unknown qubit based on the interaction mechanism between discrete-variable (DV) and continuous-variable (CV) states on highly transmissive beam splitter (HTBS). This DV-CV interaction mechanism is based on the simultaneous displacement of the DV state on equal in absolute value, but opposite in sign displacement amplitudes by coherent components of the hybrid in such a way that all the information about the displacement amplitudes is lost with subsequent registration of photons in the auxiliary modes. The relative phase of the displaced unknown qubit in the measurement number state basis can vary on opposite, depending on the parity of the basis states in the case of the negative amplitude of displacement that is akin to action of nonlinear effect on the teleported qubit. All measurement outcomes of the quantum teleportation are distinguishable, but the teleported state at Bob’s disposal may acquire a predetermined amplitude-distorting factor. Two methods of getting rid of the factors are considered. The quantum teleportation is considered in various interpretations. A method for increasing the efficiency of quantum teleportation of an unknown qubit is proposed.
Keywords: discrete-variable states; continuous-variable states; quantum teleportation of unknown qubit; hybrid entanglement; collapse of the quantum state discrete-variable states; continuous-variable states; quantum teleportation of unknown qubit; hybrid entanglement; collapse of the quantum state
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Podoshvedov, S.A. Efficient Quantum Teleportation of Unknown Qubit Based on DV-CV Interaction Mechanism. Entropy 2019, 21, 150.

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