Abstract
We study quantum information properties of a seven-level system realized by a particle in a onedimensional square-well trap and discuss the features of encodings of seven-level systems in a form of three-qubit or qubit–qutrit systems. We use the three-qubit encoding of the system in order to investigate the subadditivity and strong subadditivity conditions for the particle’s thermal state. We employ the qubit–qutrit encoding to suggest a single qudit algorithm for calculating the parity of a bit string. The results obtained indicate on the potential resource of multilevel systems for realization of quantum information processing.
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Popov, A., Kiktenko, E., Fedorov, A. et al. Information Processing Using Three-Qubit and Qubit–Qutrit Encodings of Noncomposite Quantum Systems. J Russ Laser Res 37, 581–590 (2016). https://doi.org/10.1007/s10946-016-9610-8
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DOI: https://doi.org/10.1007/s10946-016-9610-8