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Quantum Information Processing

Geometric discord for multiqubit systems

  • 01-07-2022
Published in:
Authors
Chen-Lu Zhu
Bin Hu
Bo Li
Zhi-Xi Wang
Shao-Ming Fei
Published in
Quantum Information Processing | Issue 7/2022

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Abstract

The article delves into the geometric measure of quantum discord for multiqubit systems, extending the concept from bipartite to multipartite scenarios. It presents analytical formulae for the geometric discord of specific N-qubit states and investigates the dynamics of geometric discord when subjected to single-qubit noise. The study reveals that sudden changes in quantum correlations can occur even when only one qubit is exposed to a noisy environment, offering insights into the behavior of quantum systems under decoherence. The article is structured to first introduce the geometric discord for multiqubit systems, then analyze the sudden changes in geometric discord, and finally conclude with the implications of these findings for the broader field of quantum information processing.
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previous article On construction of quantum codes with dual-containing quasi-cyclic codes
next article NMR Hamiltonian as an effective Hamiltonian to generate Schrödinger’s cat states
Title
Geometric discord for multiqubit systems
Authors
Chen-Lu Zhu
Bin Hu
Bo Li
Zhi-Xi Wang
Shao-Ming Fei
Publication date
01-07-2022
Publisher
Springer US
Published in
Quantum Information Processing / Issue 7/2022
Print ISSN: 1570-0755
Electronic ISSN: 1573-1332
DOI
https://doi.org/10.1007/s11128-022-03581-y
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