Quantum Information Masking in Non-Hermitian Systems and Robustness

• URL: http://arxiv.org/abs/2203.03864v1
• Date: Tue, 8 Mar 2022 06:03:36 GMT
• Title: Quantum Information Masking in Non-Hermitian Systems and Robustness
• Authors: Qiao-Qiao Lv, Jin-Min Liang, Zhi-Xi Wang and Shao-Ming Fei
• Abstract summary: We show that quantum states can be deterministically masked, while an arbitrary set of quantum states cannot be masked in non-Hermitian quantum systems. We study robustness of quantum information masking against noisy environments.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: By studying quantum information masking in non-Hermitian quantum systems, we show that mutually orthogonal quantum states can be deterministically masked, while an arbitrary set of quantum states cannot be masked in non-Hermitian quantum systems. We further demonstrate that a set of linearly independent states which are mutually $\eta$-orthogonal can be deterministically masked by a pseudo-unitary operator. Moreover, we study robustness of quantum information masking against noisy environments. The robustness of deterministic and probabilistic quantum information masking under different quantum noise channels is analyzed in detail. Accordingly, we propose and discuss the $r$-uniform probabilistic quantum information masking in multipartite systems.

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