Investigation of the influence of measurement imperfections on quantum communication complexity superiority for the Clauser-Horne-Shimony-Holt game
Demonstrating quantum communication complexity superiority non-trivially with currently available experimental systems is of utmost importance in quantum information science. Here, we propose a generalized entanglement-assisted communication complexity reduction protocol and analyze the robustness o...
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Veröffentlicht in: | Optics express 2022-07, Vol.30 (15), p.28003-28013 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Demonstrating quantum communication complexity superiority
non-trivially with currently available experimental systems is of
utmost importance in quantum information science. Here, we propose a
generalized entanglement-assisted communication complexity reduction
protocol and analyze the robustness of its quantum superiority against
the measurement imperfections, such as measurement basis deviation and
choice probability bias, a common problem rarely studied before. We
find that the quantum superiority can be obtained in a specific
entangled state in a suitable range of measurement basis and basis
choice parameters. And the quantum superiority strengthens with the
increase of the entanglement degree of quantum states. By using the
maximum entangled state and its corresponding optimal measurement, the
result we obtained violated the optimal classical bound by 239
standard deviations. Besides, the robustness of effective measurement
basis in dephasing and depolarizing quantum channels is also
investigated. These results not only make a step forward in
investigating sufficient experimental conditions to unambiguously
demonstrate the superiority of quantum communication complexity but
also help to develop relevant practical applications. |
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ISSN: | 1094-4087 1094-4087 |
DOI: | 10.1364/OE.462209 |