Demonstration of controlled quantum teleportation for discrete variables on linear optical devices

0511671 - FZÚ 2020 RIV US eng J - Journal Article
Barasinski, A. - Černoch, Antonín - Lemr, K.
Demonstration of controlled quantum teleportation for discrete variables on linear optical devices.
Physical Review Letters. Roč. 122, č. 17 (2019), s. 1-5, č. článku 170501. ISSN 0031-9007. E-ISSN 1079-7114
Institutional support: RVO:68378271
Keywords : demonstration * controlled * optical * variables * devices * linear * quantum * discrete * teleportation
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 8.385, year: 2019
Method of publishing: Limited access
https://doi.org/10.1103/physrevlett.122.170501

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.

Permanent Link: http://hdl.handle.net/11104/0301896