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Erschienen in: Quantum Information Processing 1/2019

01.01.2019

Quantum communication protocols as a benchmark for programmable quantum computers

verfasst von: A. A. Zhukov, E. O. Kiktenko, A. A. Elistratov, W. V. Pogosov, Yu. E. Lozovik

Erschienen in: Quantum Information Processing | Ausgabe 1/2019

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Abstract

We point out that realization of quantum communication protocols in programmable quantum computers provides a deep benchmark for capabilities of real quantum hardware. Particularly, it is prospective to focus on measurements of entropy-based characteristics of the performance and to explore whether a “quantum regime” is preserved. We perform proof-of-principle implementations of superdense coding and quantum key distribution BB84 using 5- and 16-qubit superconducting quantum processors of IBM Quantum Experience. We focus on the ability of these quantum machines to provide an efficient transfer of information between distant parts of the processors by placing Alice and Bob at different qubits of the devices. We also examine the ability of quantum devices to serve as quantum memory and to store entangled states used in quantum communication. Another issue we address is an error mitigation. Although it is at odds with benchmarking, this problem is nevertheless of importance in a general context of quantum computation with noisy quantum devices. We perform such a mitigation and noticeably improve some results.

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Metadaten
Titel
Quantum communication protocols as a benchmark for programmable quantum computers
verfasst von
A. A. Zhukov
E. O. Kiktenko
A. A. Elistratov
W. V. Pogosov
Yu. E. Lozovik
Publikationsdatum
01.01.2019
Verlag
Springer US
Erschienen in
Quantum Information Processing / Ausgabe 1/2019
Print ISSN: 1570-0755
Elektronische ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-018-2144-y

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